| 单词 | relative humidity |
| 例句 | His recommended range for relative humidity is narrower than the range of 35 to 55 percent called for in USFloors’s installation guidelines. Gaps in cork flooring probably due to drier air 2020-05-22T04:00:00Z The room looks like an enormous refrigerator from the outside and is kept at a crisp 60 degrees and 40% relative humidity, optimal for photography. Broad museum's storage 'vault' to offer unique peek beyond the exhibits 2015-08-09T04:00:00Z That’s important, because wood, no matter how carefully it is dried or installed, will always continue to expand and contract as relative humidity rises and falls with changes in the weather. Dealing with gunk in the gaps in old hardwood floors 2020-05-01T04:00:00Z Stuart Walker, the library's chief book conservator who retired in 2013, tells the Boston Globe that dramatic shifts in relative humidity are a serious problem. Good news and bad news for the Boston Public Library 2015-06-23T04:00:00Z Manufacturers generally specify that a house with engineered wood floors needs to be kept at 60 to 80 degrees with relative humidity between 35 and 55 percent. The floorboards are buckling again, but were the new boards laid correctly? 2018-10-08T04:00:00Z If you added a dehumidifier or made another change to keep the relative humidity low, adjust the setting to keep it at 40 to 50 percent, he suggested. Gaps in cork flooring probably due to drier air 2020-05-22T04:00:00Z Check the labels on the primer and the paint to see what the temperature and relative humidity need to be for each layer and how long you need to wait between coats. How to pick the right kind of paint for a bathroom 2015-02-10T05:00:00Z It varies depending on both the temperature of the air and the relative humidity. Why is water dripping from the guest room ceiling in the winter? 2019-02-01T05:00:00Z Some don’t actually move much air, allowing relative humidity in the room or rooms where air flows to be much more moist than you intend. Why is water dripping from the guest room ceiling in the winter? 2019-02-01T05:00:00Z “You get more water vapor and more evaporation from the oceans nearby, and so you’re increasing that relative humidity,” Farnsworth says. Will the Next Supercontinent Really Drive Mammals to Extinction? 2023-10-17T04:00:00Z The area, which is typically warm and dry in August, saw 6% relative humidity. This WA wildfire sparked in a field of wheat. Within minutes it overwhelmed firefighters. 2023-09-11T04:00:00Z The day the Gray and Oregon Road fires ignited, relative humidity was around 6%, and wind gusts measured at speeds of 30 mph for hours. Wildfire seasons in WA are burning differently 2023-08-29T04:00:00Z They also don’t know if relative humidity affects the temperature threshold, or how the death of individual leaves may influence a tree’s mortality. Tropical forests may be warming to a point where plant photosynthesis fails, study warns 2023-08-26T04:00:00Z "Factors that affect the fire such as temperature, fuel aridity, relative humidity, and wind leading up to and during the fire can be compared to historical conditions," Raymond wrote to Salon. From Hawaii to Greece, the planet is broiling from wildfires. How much is climate change to blame? 2023-08-11T04:00:00Z The relative humidity was recorded at 25%, intensifying the effect of the heat. Nearly 100 die as India struggles with a sweltering heat wave in 2 most populous states 2023-06-18T04:00:00Z The relative humidity was recorded at 25%, intensifying the impact of the heat. Nearly 100 die as India struggles with a sweltering heatwave in 2 most populous states 2023-06-18T04:00:00Z Heat index values take into account the temperature and relative humidity and indicate how hot it feels outdoors. Extreme heat baking much of Texas, with forecasters saying no relief anytime soon 2023-06-16T04:00:00Z We also found that people have very limited knowledge of the “heat index”—a measure that factors in relative humidity to estimate how a given day's temperature actually feels to the human body. Extreme Heat Is Deadlier Than Hurricanes, Floods and Tornadoes Combined 2023-06-16T04:00:00Z In addition, the heat index, which measures how the climate feels to the human body by combining the measured temperature with relative humidity, reached 125 degrees Tuesday in Dorado in northern Puerto Rico. Heat index reaches as high as 125 degrees in Puerto Rico amidst sweltering start to summer 2023-06-08T04:00:00Z Minimum relative humidity values will once again drop below 30% this afternoon over much of the area. Western WA fire conditions intensify as heat and dry weather continue 2023-06-06T04:00:00Z The study points to record-breaking temperatures that have decreased the relative humidity of the atmosphere, increasing the occurrence of "vapor pressure deficit." Climate Change Is Escalating California’s Wildfires 2023-05-31T04:00:00Z This kind of staining is especially common in sunrooms built with Western red cedar in the Pacific Northwest, where the relative humidity is generally high in the winter. Advice | What is the black grime on my window frames and how do I get rid of it? 2023-04-21T04:00:00Z “The rising temperatures combined with westerly winds, which reach the Mediterranean hot and dry, cause the relative humidity to fall, and the risk of wildfires goes up dramatically,” Del Campo said. Climate change helps breed springtime wildfires in Spain 2023-03-30T04:00:00Z The clouds’ relative humidity climbs, ice particles congeal and snow falls — mostly in the highest, uninhabited interior — wrung dry by the 12,000- to 14,000-foot peaks. It's official. Mammoth Mountain's had its snowiest season ever — and by a lot 2023-03-29T04:00:00Z Large amounts of dead grass and heather from last year have dried out quickly due to the combination of frost, low relative humidity, sunshine and wind. Weather warnings for snow, ice and wildfires in Scotland 2023-03-10T05:00:00Z “The blue one is our relative humidity,” De Solo said. How do you track an atmospheric river? Climb aboard this highflying reconnaissance jet 2023-02-01T05:00:00Z Patients reported more pain at their one-year follow-ups if the atmospheric pressure — which often drops right before storms and cold fronts — was low and if the relative humidity was above 70% on their appointment days. Why Do Weather Changes Make My Pain Worse? 2023-01-30T05:00:00Z Play stopped outside when the Australian Open heat stress scale - which takes into account the strength of the sun, air temperature in the shade, relative humidity, and wind speed - reached its highest level of five. Extreme heat stops Australian Open play 2023-01-16T05:00:00Z Since they are tropical in nature, they are used to 50% relative humidity or higher. Pruning roses too early in winter may invite disease, gardeners say 2023-01-05T05:00:00Z Another Santa Ana wind event is expected to batter Los Angeles and Ventura counties Friday evening into Saturday, and combined with low relative humidity, could bring extreme wildfire risk to the region. More Santa Ana winds to bring extreme wildfire risk to Southern California this weekend 2022-11-18T05:00:00Z First take a reading where the paint is intact; it will probably be between 5 percent and 15 percent, depending on the relative humidity in your home that day. Advice | What makes paint bubble and peel, and how can I fix it? 2022-10-21T04:00:00Z “This period of gusty winds and lower relative humidity will increase wildfire potential and PG&E meteorology will continue to monitor the details of the upcoming event,” the company said. Some Northern counties could see safety power outages this weekend due to fire risk, PG&E announced 2022-10-21T04:00:00Z Monday afternoon, wearing soot-stained yellow and green fire gear, she was swinging a metal device to measure relative humidity at the top of Heybrook Lookout. Inside the Bolt Creek fire — and the newly burning forests of the western Cascades 2022-10-19T04:00:00Z The fire quieted down on Wednesday thanks to mild temperatures, high relative humidity and around .10 inches of rain, the DNR said. Stretch of Highway 2 reopens after closure due to Bolt Creek fire 2022-09-29T04:00:00Z “We are seeing a pretty significant rise in those relative humidity rates. That’s going to start to dampen some of that fuel, but the fuel on the ground is still very, very dry,” Rodruck said. As smoke blankets Spokane, air quality remains ‘very unhealthy’ 2022-09-13T04:00:00Z Although conditions had improved, McGough said officials wouldn’t let the rainfall and increased relative humidity “lull us into complacency to think that this fire is out.” Firefighters battle massive fire near Hemet from the sky at night 2022-09-10T04:00:00Z On July 18, for example, Denver had a high temperature of 100 degrees and a relative humidity of 13%. A New Way to Measure Heat Risks for People 2022-08-31T04:00:00Z At its maximum, denoted as saturation, the relative humidity is 100%, and evaporation is inhibited. College Physics for AP Courses 2015-08-12T00:00:00Z The National Weather Service’s heat alert system is mainly based on the heat index, a measure of how hot it feels when relative humidity is factored in with air temperature. Heat Waves Affect Children More Severely 2022-08-05T04:00:00Z It was fostered by strong winds, high temperatures and low relative humidity, fire authorities reported. Fast-spreading fire near Ellensburg prompts evacuations 2022-08-04T04:00:00Z The apparent temperature index is a measure of how the temperature feels, and it is based on two variables: h, which is relative humidity, and t, which is the air temperature. Calculus, Volume 3 2016-03-30T00:00:00Z "That is to cool flames and to increase the relative humidity and decrease the fire behavior around this tree." Why fighting fire with fire might actually save Yosemite's giant sequoias 2022-07-19T04:00:00Z The dew point is the temperature at which air reaches 100% relative humidity. College Physics for AP Courses 2015-08-12T00:00:00Z However, the rate at which evaporation occurs depends on relative humidity—more sweat evaporates in lower humidity environments. Anatomy and Physiology 2013-06-19T00:00:00Z “That is, to cool flames and to increase the relative humidity and decrease the fire behavior around this tree.” Firefighters race to defend ancient sequoias from 2,300-acre Washburn fire in Yosemite 2022-07-11T04:00:00Z One bit of good news for firefighters was that relative humidity was reported Sunday morning to be around 26%, officials said. Firefighters continue battle against blaze threatening giant sequoias in Yosemite National Park 2022-07-10T04:00:00Z “That’s relative humidity that will tend to suppress the fire behavior and, of course, hopefully some rain. But not too much rain. We all know the threat and the risk of post-burn flooding.” Summer rainy season sets up across Four Corners region 2022-06-15T04:00:00Z What will the relative humidity be that evening when the temperature has dropped to 10.0ºC , assuming constant water vapor density? College Physics for AP Courses 2015-08-12T00:00:00Z Heat index values - which take into account the temperature and relative humidity and indicate how hot it feels outdoors - could approach 105 degrees, the weather service said. Dangerous heat wave descends on parts of Midwest and South 2022-06-14T04:00:00Z Heat index values — which take into account the temperature and relative humidity and indicate how hot it feels outdoors — could approach 105 degrees, the weather service said. Dangerous heat wave descends on parts of Midwest and South 2022-06-14T04:00:00Z Those conditions are a combination of strong wind, low relative humidity and dry vegetation. National Weather Service posts red-flag fire warnings throughout Southwest 2022-05-28T04:00:00Z Those conditions are combination of strong wind, low relative humidity and dry vegetation. Critical fire condition warnings issued across US Southwest 2022-05-28T04:00:00Z What is the density of water vapor in g/m3 on a hot dry day in the desert when the temperature is 40.0ºC and the relative humidity is 6.00%? College Physics for AP Courses 2015-08-12T00:00:00Z Instead, it only measures VOCs, carbon dioxide levels, and relative humidity to calculate a clean air score, which you can see on the device and in the app. Ecobee’s Smart Thermostat Premium is my new favorite thermostat 2022-05-17T04:00:00Z Such skies seemed appropriate to a day of robust relative humidity and a dew point that headed toward the realms of discomfort. A humid Saturday seemed to suggest the stickiness of summer 2022-05-14T04:00:00Z The Weather Service said that a fire warning was in effect for several counties in south-central Nebraska and north-central Kansas through Saturday night because of strong winds and low relative humidity. Fire Chief Killed While Responding to Nebraska Wildfire 2022-04-09T04:00:00Z As is typical of Santa Ana winds, which heat up and dry out as they flow downslope to sea level in Southern California, relative humidity levels could plummet as low as 3% to 10%. Heat, Santa Ana winds to hit Southern California this week, but a chance of showers awaits 2022-04-06T04:00:00Z When we say humidity, we really mean relative humidity. College Physics for AP Courses 2015-08-12T00:00:00Z Officials predict relative humidity will plummet as low as 2% to 8% by Thursday and Friday, along with “very poor overnight recoveries, especially in mountain areas,” according to the warning. Thanksgiving brings strong winds, power shutoffs and fire danger 2021-11-25T05:00:00Z Red flag warnings were set to go into effect at late morning and last through much of Friday due to predicted strong gusts and very low relative humidity, the National Weather Service said. Santa Ana winds to increase Southern California fire danger 2021-11-24T05:00:00Z In the winter, relative humidity is often low — below 40 to 60 percent, which can affect COVID-19 transmission, because it becomes more difficult for the body to essentially filter the virus. Winter weather could spur another COVID-19 surge, experts say. Here's why 2021-11-10T05:00:00Z Keep the relative humidity in your home between 30 and 50 percent. How — and when — to check indoor air quality in your home 2021-10-17T04:00:00Z For example, relative humidity rises in the evening, as air temperature declines, sometimes reaching the dew point. College Physics for AP Courses 2015-08-12T00:00:00Z The National Wood Flooring Association recommends keeping a home with wood floors between 60 and 80 degrees Fahrenheit and between 30% and 50% relative humidity year-round. How to clean and care for hardwood floors 2021-10-25T04:00:00Z The National Wood Flooring Association recommends keeping a home with wood floors between 60 and 80 degrees Fahrenheit and between 30 and 50 percent relative humidity year-round. How to clean and care for hardwood floors 2021-10-08T04:00:00Z The fire was not that active overnight into Saturday, as relative humidity recoveries improved, Judy said. Crews scramble to make progress against California wildfires 2021-09-25T04:00:00Z Decreasing relative humidity has helped boost the number of days each year when forests are vulnerable to wildfire. The Dixie Fire disaster and me 2021-09-24T04:00:00Z At the dew point temperature, relative humidity is 100%, and fog may result from the condensation of water droplets if they are small enough to stay in suspension. College Physics for AP Courses 2015-08-12T00:00:00Z “Gusty winds and low relative humidity increase our concern,” said David Sweet, a meteorologist with the National Weather Service in Oxnard. Santa Ana winds and critical fire weather are headed for Los Angeles 2021-09-20T04:00:00Z Forecasters have cautioned that a confluence of factors — very low relative humidity levels and strong winds gusting as high as 45 mph — could lead to extreme fire behavior. Sequoia National Park's General Sherman tree, one of largest in the world, still safe amid growing wildfire 2021-09-19T04:00:00Z Conditions had already started to cool off, helping to boost relative humidity levels. Crews scramble to make progress against California wildfires 2021-09-25T04:00:00Z Firefighters were bracing for high temperatures and low relative humidity — both conditions known to spur fire activity, Cal Fire officials said. Fast-moving South fire near Fontana destroys at least 4 homes 2021-08-26T04:00:00Z Still, the conditions were oppressive, with a temperature of 78 degrees Fahrenheit and the relative humidity at 86 percent at the start. Eliud Kipchoge finishes far ahead of the pack to defend his men’s Olympic marathon title. 2021-08-07T04:00:00Z The region will see little relief overnight as relative humidity will not climb above 15%. Heat, winds and low humidity mean fire risk in Southern California this week 2021-08-02T04:00:00Z Crews were looking forward to slightly cooler temperatures after several days of extreme heat, as well as an increase in relative humidity, he said. Wildfire in Butte County grows to 500 acres as crews tackle blazes across California 2021-07-14T04:00:00Z The low relative humidity encouraged the fire, though officials hope that a higher humidity on Monday will help to mitigate further spread. Arizona's Flag Fire balloons in size, prompting evacuations 2021-04-26T04:00:00Z There also will be brief elevated to critical fire weather conditions as relative humidity readings dip to the 5% to 15% range by Sunday afternoon. Strong winds possible in the San Gabriel Valley area Sunday morning, forecasters say 2021-02-26T05:00:00Z They scour cloud cover from the sky and can bring relative humidity down to the single digits. California's rainy season is starting about a month later than it did in the 1960s, researchers say 2021-02-13T05:00:00Z Indeed, a study conducted in New South Wales, Australia, demonstrates an inverse relationship between relative humidity and transmission of SARS-CoV-2. Another Way to Protect Against COVID Beyond Masking and Social Distancing 2021-01-19T05:00:00Z The study also predicts an overall decrease in relative humidity, except in coastal regions, by 2100. Cities Face Withering Heat under Worst Warming Scenarios 2021-01-05T05:00:00Z The offshore flow brings extremely low relative humidity, making vegetation already dried out by the summer months even more ready to burn. California to see high fire danger before weekend storms 2020-12-23T05:00:00Z By Friday morning, relative humidity in the L.A. area will be as low as the single digits. What are foehn winds? Fires in the Eastern Sierra were fueled by Santa Ana-like gusting 2020-11-25T05:00:00Z So the fire is weaker at night because of increased relative humidity, and the air being pulled into the fire is cooler. The fire that devastated a Sierra town created a pyrocumulus cloud. What does that mean? 2020-11-19T05:00:00Z We recommend maintaining relative humidity between 40 to 60 percent to maximize the benefits of humidity but not the drawbacks of too much humidity that promote mold growth. Another Way to Protect Against COVID Beyond Masking and Social Distancing 2021-01-19T05:00:00Z The process took climate model outputs and translated them into city-level projections of temperature and relative humidity. Cities Face Withering Heat under Worst Warming Scenarios 2021-01-05T05:00:00Z When exposed to temperatures of 80 degrees Fahrenheit and 65% relative humidity, more than half of viral samples break down in just 90 minutes. A winter surge in COVID-19 cases seems inevitable. Can we stop it? 2020-11-11T05:00:00Z Although the Bay Area recorded a relative humidity of about 100% Sunday morning, the winds were expected to cause that value to plummet throughout the afternoon and overnight, when humidity values usually increase, Dykema said. California braces for most dangerous fire weather of the season; PG&E already cutting off power to customers 2020-10-25T04:00:00Z Super-dry air will drive relative humidity down to the single digits, causing critical fire conditions late Sunday night through Tuesday. Santa Ana winds will raise red flags on land and big waves off the coast, forecasters say 2020-10-24T04:00:00Z “And then in the afternoon, we’re looking at low relative humidities — down to the single digits.” Winds to worsen Southern California fire danger as record-breaking fall heat wave continues 2020-10-15T04:00:00Z These winds combined with low relative humidity values and dry fuels will potentially lead to critical fire weather conditions. Fall blast of heat and wind heightens California fire danger 2020-10-13T04:00:00Z “But without the normal cooling as relative humidity goes up, the fires just absolutely explode.” Climate change brings Santa Ana-like winds and explosive wildfires to Oregon 2020-09-10T04:00:00Z The rare weather, more characteristic of winter storms in the region, was accompanied by historically low relative humidity. At least seven dead and thousands displaced as fires scorch American west 2020-09-10T04:00:00Z In addition to the heat, relative humidities are expected to drop down into the single digits Sunday afternoon, with little recovery overnight. Southern California heat wave could break all-time records, raising fears of effects 2020-09-05T04:00:00Z Triple-digit temperatures, low relative humidity and heavy fuels combined to create the potential for continued spread, Miller said. Massive wildfire spawns fire tornadoes in Northern California 2020-08-16T04:00:00Z “Much of the fire activity is being driven by the record-low moisture content of the vegetation in the area combined with high temperatures and low relative humidity,” officials wrote in an incident update. Apple fire swells to 26,000 acres amid hot, dry and windy conditions 2020-08-03T04:00:00Z Most paint labels recommend painting when the relative humidity is between 40–60%. 6 reasons to have your fiber cement siding pre-painted | Produced by Seattle Times Marketing 2020-07-24T04:00:00Z Weather was beginning to stabilize and thunderstorm activity was expected to be minimal, but gusty winds and low relative humidity were to continue, Cal Fire said. Containment increases on northeast California fire lines 2020-07-23T04:00:00Z “The trend lines all indicate that heat waves are becoming more frequent and relative humidity is going up,” Horton said. Chicago Learned Climate Lessons from Its Deadly 1995 Heat Wave 2020-07-16T04:00:00Z Strong winds and low relative humidity will cause a high risk that any fires that develop will spread rapidly. Strong winds and low humidity will bring critical wildfire danger to much of the West 2020-06-27T04:00:00Z Their simulation considered factors like "relative humidity, turbulent dispersion forces, droplet phase-change, evaporation, and breakup in addition to the droplet–droplet and droplet–air interactions," according to the paper's abstract. Six feet may not be far enough to stop coronavirus transmission in windy weather, study suggests 2020-05-19T04:00:00Z Red flag warnings are in effect in northern Arizona, where strong gusty winds and low relative humidity will create critical fire weather conditions. Arizona wildfire near Phoenix grows to 1,500 acres, hundreds evacuated 2020-05-18T04:00:00Z The scientists want the WHO to introduce clear guidelines on the lower level of relative humidity for public buildings. Scientists call on WHO to provide guidance on indoor humidity in coronavirus battle 2020-05-04T04:00:00Z Fire weather concerns are minimal because of high fuel moisture, but relative humidity will dip to 12% to 25%, with the lowest readings Thursday and Friday. First heat wave of 2020 will arrive in Southern California this week 2020-04-21T04:00:00Z Contributing factors include warm temperatures, low relative humidity and windy conditions. Crews contain wildfire in central Wisconsin 2020-04-19T04:00:00Z While the effectiveness of social distancing measures obviously plays a crucial role in battling the spread of COVID-19, the scientists are also eyeing changes in relative humidity indoors from winter to spring to summer. Indoor humidity may slow coronavirus spread, Yale scientists say 2020-04-06T04:00:00Z Reagan National Airport mostly registered relative humidity readings of below 40 percent. A no-shower April day brings fire threat in Washington area, authorities say 2020-04-03T04:00:00Z Maintaining the proper conditions of cage hygiene, temperature, and relative humidity is costly but also an essential ethical duty. Lockdown in Italy: personal stories of doing science during the COVID-19 quarantine 2020-04-01T04:00:00Z For example, she said, the researchers used a relative humidity of 65 percent. How Long Will Coronavirus Live on Surfaces or in the Air Around You? 2020-03-17T04:00:00Z The second study concludes that sustained transmission appears to occur only in specific bands of the globe that have temperatures between 5°C and 11°C and 47% to 70% relative humidity. Why do dozens of diseases wax and wane with the seasons—and will COVID-19? 2020-03-13T04:00:00Z Scientists say there is a “sweet spot” in relative humidity for indoor environments, citing research involving rodents. Indoor humidity may slow coronavirus spread, Yale scientists say 2020-04-06T04:00:00Z Many houseplants come from subtropical and tropical regions and need a “relative humidity of at least 40 percent,” according to “Reader’s Digest Success With House Plants.” Humidity-loving houseplants need a little mist. Here's how to give it to them 2020-03-08T05:00:00Z Other factors also play a role, including warmer winter temperatures and increasing relative humidity due to climate change. It’s time to bring wildlife policy into the 21st century 2020-02-18T05:00:00Z The air is expected to be quite dry, with minimum relative humidity forecast to dip perhaps below 10%, forecasters said. Dangerous fire weather conditions return Sunday to Southern California 2019-11-16T05:00:00Z Chan School of Public Health reported that drops in absolute humidity better explained the onset of influenza epidemics in the continental United States than relative humidity or temperature. Why do dozens of diseases wax and wane with the seasons—and will COVID-19? 2020-03-13T04:00:00Z “Mice in environments of between 40 percent and 60 percent relative humidity show substantially less ability to transmit viruses to non-infected mice than those in environments of low or high relative humidity,” the researchers state. Indoor humidity may slow coronavirus spread, Yale scientists say 2020-04-06T04:00:00Z Critical: Vegetation is dry; sustained winds are forecast for 20 mph for a duration of three hours or more; relative humidity is 15% or less. What are red flag warnings? 2019-11-16T05:00:00Z Meanwhile, moderate Santa Ana winds are on tap for Southern California this weekend, with relative humidity readings expected to be in the teens and single digits. With more Santa Ana winds on the way, most of California is abnormally dry 2019-11-14T05:00:00Z "The warm temperatures, low relative humidities, and dry conditions will continue to elevate the threat of fire weather for portions of Southern California into the Southwest over the next two days." 'Arctic airmass' brings record-breaking cold to Midwest, as snow that caused 4 deaths moves East 2019-11-12T05:00:00Z Days ago, relative humidity values across the region were less than 10%. Finally, some relief: Santa Ana winds weaken as fire weather warnings for L.A. area expire 2019-11-03T04:00:00Z The air is still bone dry, with relative humidity levels in Simi Valley, the site of the fire that threatened the Ronald Reagan Presidential Library, still at 8% Thursday. No rain in sight for L.A. area for next few weeks, keeping fire danger high 2019-10-31T04:00:00Z Extremely critical: In California, vegetation is particularly dry; sustained winds are expected at 30 mph over at least three hours; and relative humidity is 10% or less. What are red flag warnings? 2019-11-16T05:00:00Z The air was parched dry, with relative humidity hitting zero atop Mt. Extreme winds fueled fires and toppled big rigs. But firefighters were prepared for battle 2019-10-31T04:00:00Z Not only is dry desert air blowing into California, but as the air descends in elevation it warms, and the relative humidity plummets. Why the 'extreme red flag' winds hitting L.A. region are dangerous and unpredictable 2019-10-29T04:00:00Z A red-flag warning means critical fire weather conditions exist or will commence shortly, and herald a combination of strong winds and low relative humidity that contribute to extreme and erratic fire behavior. Extreme fire weather could be the worst 'in recent memory' 2019-10-29T04:00:00Z Not only is dry desert air blowing into California but also, as the air descends in elevation, it warms and the relative humidity plummets. How do wildfires start and spread? 2019-10-29T04:00:00Z Winds around 5 a.m. at Franklin Canyon Park east of the Sepulveda Pass were 10 mph, with gusts of up to 17 mph, with a relative humidity of 23%, which is relatively dry, forecasters said. Getty fire: Winds expected to worsen during the day amid dry, dangerous conditions 2019-10-28T04:00:00Z Not only will winds be bad, but the air will be quite dry — relative humidity levels are forecast to fall between 15% and 30%; anything in the teens and 20s is really dry, King said. PG&E expands unprecedented power outages to well over 2 million people 2019-10-27T04:00:00Z Widespread relative humidity readings below 10 percent will continue as dry, downslope winds spread across the region. California forecasters saw the ‘devil wind’ storm coming: It’s the worst-case scenario for wildfires 2019-10-27T04:00:00Z Not only will winds be bad, but the air will be quite dry — relative humidity levels are forecast to fall between 15% and 30%; anything in the teens and 20s is really dry. Winds top a stunning 93 mph in Kincade fire zone, causing havoc across Sonoma County 2019-10-27T04:00:00Z Not only will winds be bad, but the air will be quite dry — relative humidity levels are forecast to fall between 15% to 30%; anything in the teens and 20s is really dry, King said. 'Very dangerous situation' as California braces for 80 mph winds, major fire risk 2019-10-26T04:00:00Z The offshore gusts, known as El Diablo winds, bring extremely dry air, with relative humidity plummeting to the single digits in some cases, making firefighting particularly difficult. High-voltage power line broke near origin of massive California fire that forced thousands of evacuations 2019-10-24T04:00:00Z The region is under a red-flag warning because of gusty northeast winds and low relative humidity. Evacuations ordered, 10,000 acres burned in Sonoma County fire 2019-10-24T04:00:00Z Santa Ana winds usually bring the lowest relative humidity of the year to Southern California. What makes the Santa Ana winds blow? 2019-10-09T04:00:00Z Swaths of Southern California face an increased fire risk Tuesday due to a combination of Santa Ana winds, high temperatures and low relative humidity. Hot, windy weather brings increased fire risk to Southern California 2019-09-24T04:00:00Z Not only is dry desert air blowing into California, as the air descends in elevation, it warms and the relative humidity plummets, Swain said. 'Very dangerous situation' as California braces for 80 mph winds, major fire risk 2019-10-26T04:00:00Z The park officials’ statements said shade temperatures were near 109 degrees with single-digit relative humidity when the fire entered the park about 6 p.m. Wildfire severely damages historic Big Bend complex 2019-05-23T04:00:00Z The researchers report the adaptive textile altered heat radiation by over 35 percent, adjusting for relative humidity. New Adaptive Fabric Cools Down as You Heat Up 2019-02-09T05:00:00Z The National Weather Service issued the warnings because of the dangerous mix of Santa Ana winds, warm temperatures and extremely low relative humidity. Santa Ana winds gusting to more than 40 mph in San Diego County - Los Angeles Times 2018-11-11T05:00:00Z Monday "really was the prime time for the winds, but the relative humidities are going to stay really low, so it's the combination of those two things that keep us in red-flag conditions," Hoxsie said. Southland remains under red-flag warnings as Santa Ana winds are expected to blow for a second day - Los Angeles Times 2018-10-16T04:00:00Z The ideal relative humidity is a range of 45–65 percent. For home wine cellars, controlling the climate is key | Produced by Advertising Publications 2018-09-06T04:00:00Z The drought was previously known, but this study is the first to quantify the rainfall, relative humidity and evaporation at that time. An ancient lake holds secrets to the Mayan civilization’s mysterious collapse, study finds 2018-08-02T04:00:00Z Authorities said the fire is being driven by low relative humidity, erratic winds and high temperatures. 3,000-acre wildfire in Northern California prompts evacuations, destroys 12 structures and threatens hundreds more 2018-06-24T04:00:00Z She says low relative humidity and increasing winds increase the fire danger. North Dakota counties issue burn bans with dry conditions 2018-04-28T04:00:00Z Meteorologists say the winds are fading but red flag warnings for high fire danger due to the strong winds and very low relative humidity won’t be called off until 7 p.m. The Latest: Southern California heat sets records 2018-01-29T05:00:00Z A combination of strong, gusty winds and low relative humidity will raise the risk of fire danger throughout Southern California beginning Saturday night and continuing through Monday afternoon, according to the National Weather Service. Weekend Santa Ana winds trigger critical fire conditions in Southern California 2018-01-27T05:00:00Z A warning issued through Reno County Emergency Management says the danger of wildfires is high due to above normal temperatures, low relative humidity and gusty winds. Kansas region warned of high danger of wildfires 2018-01-25T05:00:00Z Wind gusts of 35 mph from the west and relative humidity of 25 percent or less combined to place all of North Central Texas under a red-flag warning for wildfires. The Latest: 1,000-acre wildfire closes Interstate 20 2018-01-22T05:00:00Z Red flag conditions are when low relative humidity is combined with gusty, strong winds. The Latest: California fire growing toward celebrity enclave 2017-12-16T05:00:00Z “It doesn’t get much drier than this folks,” the National Weather Service Service tweeted, adding that more than 80 observation sites in the region reported afternoon relative humidity levels between just 1 and 9 percent. Dangerous winds persist as wildfires roar in California 2017-12-12T05:00:00Z The weekend also will bring very low relative humidity, in the single digits in some areas, as temperatures climb into the 80s on Sunday and Monday, forecasters said. Weekend Santa Ana winds trigger critical fire conditions in Southern California 2018-01-27T05:00:00Z The dangerous Santa Ana winds that have fanned fires across Southern California this week have diminished over the new LA fire but conditions are very dry, with just 9 percent relative humidity. The Latest: Spread of Los Angeles wildfire stopped 2017-12-06T05:00:00Z There is a 70% chance of rain forecast for Santa Rosa on Thursday evening, with relative humidity in the area expected to increase to more than 90% ahead of the rain system, Bell said. California wildfires have killed 40 people; dozens still missing as firefighters make progress 2017-10-15T04:00:00Z That’s because if the air over the desert of the Great Basin becomes warmer, its relative humidity will decrease. California Winds Are Fueling Fires. It May Be Getting Worse. 2017-10-11T04:00:00Z Temperatures Monday were projected to reach 86 degrees, with winds at three to 10 mph and a relative humidity of 40% to 45%. Weather delivers blow to La Tuna fire's spread: 'Mother Nature kicked in' 2017-09-04T04:00:00Z At the time Dominick collapsed, around 9:30 a.m., it was 79 degrees and the relative humidity was 73 percent, according to the National Weather Service. Few Answers in the Death of a Bronx Football Player 2017-08-25T04:00:00Z These maps were estimated by collating data on Aedes mosquitoes, temperature, relative humidity and precipitation, and are the basis of the trends in suitability for different regions shown in main text Figs 1 and 4. Establishment and cryptic transmission of Zika virus in Brazil and the Americas : Nature : Nature Research 2017-05-23T04:00:00Z Crews say there is active fire behavior and the flames are being fueled by gusty winds, low relative humidity and dry vegetation. Firefighters battling 7,000-acre wildfire near Green Valley 2017-04-24T04:00:00Z In this case, the fog raises the air’s relative humidity to just about 100 percent. This device pulls drinking water straight out of the air — and it runs entirely on the sun’s energy 2017-04-13T04:00:00Z The National Weather Service issued a “red flag” warning for much of the area through Friday night due to low relative humidity and gusty winds. Large brush fire threatens South Florida fish camp, park 2017-04-07T04:00:00Z When fires erupted in the Panhandle in early March, relative humidity was exceptionally low and winds were gusting up to 60 mph in some places. “A lot of bad luck”: Drought and severe weather fuels record Oklahoma wildfires 2017-04-02T04:00:00Z These maps were estimated by collating data on Aedes mosquitoes, temperature, relative humidity and precipitation, and are the basis of the trends in suitability for different regions shown in main text Figs 1 and 4. Establishment and cryptic transmission of Zika virus in Brazil and the Americas : Nature : Nature Research 2017-05-23T04:00:00Z Experts raised concerns about sustained winds of 30 to 35 mph, above normal temperatures and low relative humidity. Forecasters say parts of Texas face critical wildfire danger 2017-02-22T05:00:00Z As the pressure dropped in the thinner atmosphere, the relative humidity climbed. From drought to deluge: How one California river tells the story of a waning drought 2017-01-14T05:00:00Z “With this expected combination of gusty winds and very low relative humidity, widespread critical fire weather conditions are expected,” the Weather Service’s warning read. Santa Ana winds bring fire risk, frost advisories to Los Angeles and Ventura counties 2016-11-17T05:00:00Z The winds, combined with low relative humidity, triggered red-flag warnings Thursday afternoon stretching from Mineral and southern Lyon County southeast of Reno to as far south as the Las Vegas area and southwest Lincoln County. Wind gusts in excess of 100 mph expected over Sierra 2016-10-13T04:00:00Z Researchers kept the relative humidity at 30 percent for the first 30 minutes and then hiked it up by 2 percent every five minutes to a maximum humidity of 70 percent. Fans May Not Be Cool Choice for the Elderly 2016-09-06T04:00:00Z The weather was cooperating again Wednesday with lighter winds and higher relative humidity forecast. Crews battling 35 large, uncontained wildfires in the West 2016-08-25T04:00:00Z A bit of improvement is expected Friday, with lighter winds and some increase in relative humidity - moisture that helps suppress fire activity. The Latest: Weather still plagues California wildfire fight 2016-08-18T04:00:00Z IBM also said it plans to donate a one-year subscription feed of highly local, daily rainfall, average temperature and relative humidity data to the U.S. IBM steps up efforts in fight against Zika 2016-07-27T04:00:00Z At 40-percent relative humidity, which is more typical indoors, the virus was less stable. Toys Remain Viral Playground for 24 Hours 2016-07-05T04:00:00Z Firefighters are expecting relative humidity and calmer winds to help in securing the fire. The Latest: Central California wildfire claims 150 homes 2016-06-25T04:00:00Z Another is that the leather is so substantial that the glove is not pleasant to wear when the temperature and relative humidity are high. For Father's Day: How about a $135 golf glove - Golf Digest 2016-06-05T04:00:00Z Windy conditions and low relative humidities are causing the dry weather. Your Whiny Wintry Weather Questions Answered 2016-04-04T04:00:00Z Forecasters also say afternoon relative humidity values should fall below 25 percent in some locations - resulting in dangerous fire weather conditions. Forecasters say conditions ripe for wildfires this week 2016-03-20T04:00:00Z At 60 percent relative humidity, 1 percent of the virus remained infectious on the toy, the study showed. Toys Remain Viral Playground for 24 Hours 2016-07-05T04:00:00Z Combined with low relative humidity, the winds will also elevate wildfire danger. Santa Ana winds to bring warming to Southern California 2016-02-05T05:00:00Z A primary role for the climate office will be to aggregate information such as air temperature, rainfall, soil temperature and moisture, relative humidity, and wind. Recent editorials published in Nebraska newspapers 2016-01-18T05:00:00Z The British study, published in 2006 in the journal Experimental and Applied Acarology, suggested a computer model for predicting the effect on dust mites of different ranges of temperature and relative humidity. Airing the Evidence on Dust Mites 2016-01-16T05:00:00Z Forecasters say the combination of the gusty offshore winds, low relative humidity levels and very dry vegetation will raise the risk of wildfires, but conditions won’t reach levels sufficiently critical to warrant red flag warnings. California to start 2016 with Santa Ana winds, then rain 2015-12-31T05:00:00Z “We’re used to seeing relative humidities lower, like in the 60 and 70 percent range.” How Hurricane Patricia Quickly Became a Monster Storm 2015-10-23T04:00:00Z Evaporative cooling acts more quickly when relative humidity is low, but the team’s tests show that the phenomenon even works when humidity is an oppressive 95%. When the water gets too hot, this fish heads to shore 2015-10-20T04:00:00Z Officials said temperatures will climb above 90 degrees and relative humidity will drop as low as 14 percent. 3 firefighters killed, 3 to 4 others injured in raging Washington state wildfires 2015-08-19T04:00:00Z These specific definitions of danger days and extreme caution days are part of the National Weather Service’s Heat Index, which measures both temperature and relative humidity. A Surge in Heat Wave "Danger Days" Is Expected in Coming Decades [Infographic] 2015-08-13T04:00:00Z The second member of the forecasting big three, which Isaac Cline studied with such interest under the Signal Corps, was the hygrometer, which measures relative humidity. Al Roker: The Tragic History of Early Weather Forecasting 2015-08-04T04:00:00Z “The relative humidity was 80 percent there,” Masters says. How Hurricane Patricia Quickly Became a Monster Storm 2015-10-23T04:00:00Z Asian Tiger mosquitoes tend to die off when temperatures venture outside a range from 50°F to 95°F and when relative humidity dips below 42 percent. What Global Warming Means for Four of Summer's Worst Pests 2015-07-30T04:00:00Z The army, for example, wanted the new courses to emphasize how to measure lengths, angles, air temperature, barometric pressure, relative humidity, electric current and voltage. History: From blackboards to bombs 2015-07-27T04:00:00Z So it’s less humid on a 65-degree day with a relative humidity of 100 percent than when it’s 100 degrees with a relative humidity of 40 percent. Five myths about summer weather 2015-07-24T04:00:00Z Like the anemometer, it’s been around ever since a not-very-accurate means of measuring relative humidity was built by—once again—Leonardo da Vinci. Al Roker: The Tragic History of Early Weather Forecasting 2015-08-04T04:00:00Z Officials said conditions are extremely challenging: very high temperatures and low relative humidity coupled with winds gusting to 25 mph. Firefighters tackle 19,000-acre fire in Central Oregon 2015-07-03T04:00:00Z Also the atmospheric pressure, and the relative humidity. Roger Goodell has one credible option: Pardon Brady, blame lax protocols 2015-06-29T04:00:00Z Gusty winds and low relative humidity levels will bring an elevated risk of fire danger. Summer weather in Southern California ahead of solstice 2015-06-18T04:00:00Z Forecasters are repeatedly told that we should report the relative humidity percentage in the summer. Five myths about summer weather 2015-07-24T04:00:00Z The closer dew-point temperature gets to air temperature, the higher the relative humidity. Al Roker: The Tragic History of Early Weather Forecasting 2015-08-04T04:00:00Z The six vaults are now held at a continuous 40 degrees Fahrenheit with 30 percent relative humidity. A beautiful but deadly art is reborn at the Nitrate Picture Show 2015-06-17T04:00:00Z On top of that, relative humidity plummets as temperatures heat up, escalating the risk of forests igniting like torches from lightning or campfires. Alaska swelters in unusually hot temperatures 2015-06-17T04:00:00Z The National Weather Service on Monday said gusty Santa Ana winds with warm temperatures and low relative humidity would bring elevated fire danger to Southern California throughout the day. 40-acre Granada Hills brush fire contained, caused by power tool 2015-04-27T04:00:00Z The federal agency issued the Red Flag Warning in response to strong winds and low relative humidity in the region. Dry, windy conditions prompt weather service fire warning 2015-04-11T04:00:00Z Simply comparing the dew-point temperature to the air temperature outside the bulbs—as measured by a common weather thermometer, conveniently mounted on the hygrometer’s wooden post—gives the relative humidity. Al Roker: The Tragic History of Early Weather Forecasting 2015-08-04T04:00:00Z Then the researchers increased the relative humidity in the chambers in 15 equal increments, from 25 percent to 95 percent at the lower temperature and from 20 to 70 percent at the 108-degree temperature. Study Refutes Notion That Fans Are Useless in Extreme Heat 2015-02-17T05:00:00Z “As the balloon rises through the atmosphere, radiosonde sensors measure and transmit profiles of air pressure, temperature and relative humidity from the Earth’s surface to about 20 miles high in the sky,” the website reads. Weather balloon’s journey ends in Grass Lake 2015-01-13T05:00:00Z Monday, stressing that "strong dusty winds and low relative humidity form a combination that allows for explosive growth of fires," according to meteorologist David Sweet. Santa Ana winds increase fire danger in parts of Southern California 2014-11-16T05:00:00Z Absolute humidity is a measurement of water vapor in the air, while relative humidity, which is commonly used in weather reports, measures air moisture content relative to the air temperature. US agency warns car owners to get air bags fixed 2014-10-20T04:00:00Z With a temperature of 95 degrees Fahrenheit and a dew point of 90 degrees Fahrenheit, you’ll get a relative humidity of nearly 86 percent—quite un- comfortable. Al Roker: The Tragic History of Early Weather Forecasting 2015-08-04T04:00:00Z The investigators found that the fans prevented heat-related elevations in heart rate and core temperature up to about 80 percent relative humidity at 97 degrees and at nearly 50 percent humidity at 108 degrees. Study Refutes Notion That Fans Are Useless in Extreme Heat 2015-02-17T05:00:00Z Forecasters raised the red flag warning due to expected low relative humidity of 15 to 25 percent and west to northwest winds of 20 to 25 miles per hour. Wildfire-weather danger east of Cascades 2014-09-08T04:00:00Z The failure of relative humidity to hold constant or rise during recent decades is a lethal dagger in the heart of alarmist global warming claims. Declining Relative Humidity Is Defying Global Warming Models 2014-08-20T04:00:00Z A combination of strong winds, low relative humidity and warm temperatures created “extreme fire-growth potential,” according to the National Weather Service, which issued a red-flag warning and flash-flood watch for the area on Friday. New, quickly moving fire near Twisp forces evacuations 2014-08-02T04:00:00Z We can directly feel the phenomena measured by anemometers and hygrometers—wind speeds and relative humidity: wind knocks us around and humidity makes us sticky. Al Roker: The Tragic History of Early Weather Forecasting 2015-08-04T04:00:00Z Temperatures are continuing to increase and the relative humidity, the amount of moisture in the air, is dropping, which is expected to result in very active fire behavior, fire officials said. Crews make progress in state’s largest wildfire 2014-07-26T04:00:00Z "Now when you get into a hot, dry period with winds and low relative humidity, it's ripe for fire," Svoboda said. Unprecedented Spate of Wildfires Incinerates Homes in Pacific Northwest 2014-07-22T04:00:00Z The decline in relative humidity indicates global warming will be much more moderate than claimed by global warming activists. Declining Relative Humidity Is Defying Global Warming Models 2014-08-20T04:00:00Z The study, published online in Arthritis Care & Research, found no association of temperature, relative humidity, barometric pressure or precipitation with episodes of pain. Weather May Not Affect Back Pain 2014-07-16T04:00:00Z High temperatures and low relative humidity were complicating the battle to contain the blaze. Butts fire grows to 3,800 acres; other blazes break out 2014-07-03T04:00:00Z The risk of heat illness rises with the heat index, a combined measure of air temperature and relative humidity. Too Hot to Handle 2014-06-23T04:00:00Z The system uses weather variables including rainfall, temperature and relative humidity to predict the likelihood of fungal diseases development in small grains. SDSU works with NDSU on grains disease forecasting 2014-06-09T04:00:00Z Rather than keeping pace with modestly warming temperatures, relative humidity is declining. Declining Relative Humidity Is Defying Global Warming Models 2014-08-20T04:00:00Z "One of the promising things ... is that our relative humidity is on the rise and will continue to be." Crews optimistic about weather in fighting Arizona wildfire 2014-05-23T04:00:00Z Fire crews on the ground struggled to save homes threatened by walls of flame amid searing temperatures, gusty winds and dangerously low relative humidity. New evacuations ordered as Cocos fire pushes toward Escondido 2014-05-15T04:00:00Z The cannons will be in climate-controlled cases to keep down the relative humidity. Restored 19th century going on display in Astoria 2014-05-15T04:00:00Z Some specimens are being put through "destructive aging tests." For example, two ostensibly identical music CDs were subjected to temperatures of 175 degrees and a relative humidity of 70 percent for 500 hours. The Library of Congress is destroying CDs to protect CDs 2014-05-14T04:00:00Z And a one percent increase in relative humidity was linked with a 0.004 point increase in pain. No clear link between weather and fibromyalgia 2013-06-14T21:30:18Z "We have to establish very strict guidelines for temperature and relative humidity," she said. Commander's ''Victory or Death'' letter finally to return to the Alamo 2013-02-09T00:59:57Z In the context of global climate, we agree that measurements and modeling of high relative humidity conditions may be important and should be conducted. [Technical Response] Response to Comment on "Radiative Absorption Enhancements Due to the Mixing State of Atmospheric Black Carbon" 2013-01-24T20:55:18.720Z However, the authors misinterpret at least some model results and omit optical focusing at high relative humidity and of involatile components. [Technical Comment] Comment on "Radiative Absorption Enhancements Due to the Mixing State of Atmospheric Black Carbon" 2013-01-24T20:55:16.103Z Marge Feinberg, a spokeswoman for the Education Department, said that on Saturday officials tested relative humidity, carbon monoxide and carbon dioxide, among other things at the school. Early Reopening of P.S./M.S. 114 in Queens Prompts Complaints 2012-11-27T21:58:24Z When relative humidity is high enough, it triggers cloud formation. Climate Change Faster Than Predicted 2012-11-09T22:45:00.243Z To get around that challenge, the researchers focused on the relationship between relative humidity - a measure of moisture in the atmosphere - and clouds. Green Blog: A New Tweak for Global Warming Predictions 2012-11-08T19:13:54Z Thus, "high RH" conditions represent only a subset of conditions that are important to global climate, and the relative humidity conditions of our measurement conditions are broadly relevant. [Technical Response] Response to Comment on "Radiative Absorption Enhancements Due to the Mixing State of Atmospheric Black Carbon" 2013-01-24T20:55:18.720Z Glasses help here by protecting the eye from ambient air currents and increasing relative humidity close to the eye. Fighting Back Against the Health Menace of LCD Screens 2012-10-08T18:08:40Z "We do a lot of rock and soil samples, we measure relative humidity and dew point, and we study star maps," she says. Teacher Gives Obama the Skinny on Packed Science Labs 2012-08-24T16:30:35Z We are in the single digits with relative humidity, which really complicates firefighting efforts. Wildfires Plague New Mexico, Michigan and Colorado 2012-05-31T01:47:23Z A strong, observable relationship exists between the two: when relative humidity is high, condensation occurs and clouds form. Green Blog: A New Tweak for Global Warming Predictions 2012-11-08T19:13:54Z These models allow clouds and aerosols to evolve as they interact with each other and respond to factors such as temperature, relative humidity and air currents. Climate forecasting: A break in the clouds 2012-05-09T17:21:00.580Z Four microclimatic stations were established in units D, F, L and M of the trapping grid to record air temperatures and relative humidities at ground level. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z “Lettuce crispness is related to oxygen concentration, carbon dioxide concentration, relative humidity and temperature, among other factors,” said Gavin L. Sacks, an assistant professor of food science. Q & A: Can a Lump of Coal Help Keep Lettuce Fresh? 2012-02-20T18:49:55Z That is, the clearness of the air is inversely proportional to the relative humidity; or, put another way, if the air is four times drier it is about four times clearer. Meteorology or Weather Explained 2012-02-20T03:00:18.847Z Models, or computer projections of future climate trends, can indirectly represent clouds by taking into account relative humidity measurements, which are readily available and bypass much of the complexity that bogs down cloud dynamics. Green Blog: A New Tweak for Global Warming Predictions 2012-11-08T19:13:54Z South Australia’s Country Fire Service issued a severe fire danger warning for parts of the state as temperatures rise to the low 40s, and relative humidity falls to below 10 percent. Victoria, South Australia Face Fire Warning as Temperatures Soar 2012-01-01T23:54:37Z Table 4 shows monthly averages of maximum and minimum air temperatures and relative humidities at each of the four sites. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Thus, the rainforests of the isthmus are characterized by a much higher relative humidity than are the savannas or semi-arid scrub forests. A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico 2011-12-31T03:00:17.400Z Because of the aquatic habits of the cottonmouth, relative humidity probably has little influence on the snake's activity. Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia) 2011-12-17T03:00:17.963Z The authors compared how well the current climate models that they reproduced observed satellite data of relative humidity in the tropics and subtropics, where monsoon seasons result in annual cycles of cloudy and clear skies. Green Blog: A New Tweak for Global Warming Predictions 2012-11-08T19:13:54Z In them, pale soil and low relative humidity are important passive factors of selection that give adaptive value to the pale colors of pelage of both infernatis and handleyi. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Relative humidities follow an inverse relationship to air temperatures; when air temperatures are highest, relative humidities approach their lowest values. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z With respect to the latter, it is well known that dense shaded forests have a considerably higher relative humidity than do open plains or areas with only scattered trees. A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico 2011-12-31T03:00:17.400Z The temperature is midway between freezing and normal body temperature or about 70° F. The relative humidity is approximately 75% and the absolute humidity 12 grams per cubic metre. Wind and Weather 2011-11-23T03:00:57.717Z This result suggests that relative humidity is a necessary metric for models to perform accurately, Dr. Trenberth said, but not a sufficient criterion in itself for predicting the degree of future change. Green Blog: A New Tweak for Global Warming Predictions 2012-11-08T19:13:54Z There is close correlation in B. taylori, as also in B. musculus, of darker pelages with zones of high relative humidity. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Drainage of cold air into lower elevations affects both nocturnal air temperatures and relative humidities. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z It's not just the temperature that matters but relative humidity, air movement, moisture in the air. Qatar stadium air-conditioning unnecessary, says designer 2011-11-08T14:33:00Z Under no reasonable assumption does the upper air at the center of an ice sheet appear to reach the surface with a relative humidity of more than 20 or 25 per cent. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z The regular recurrence of warm gulf air is responsible for the characteristically high relative humidity in summer over eastern Kansas and it has an ameliorating effect on winter climate in this region. The Breeding Birds of Kansas 2011-08-27T02:00:24.797Z Both analogous and fuliginatus occur in relatively high mountainous country on dark soils or pedregals, and all three of the aforementioned subspecies occur in zones of high relative humidity. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Air temperatures and relative humidities at this station did not differ appreciably from mean temperatures and humidities at the other stations. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z And when outdoor air on a muggy August afternoon is lowered to a temperate 72 degrees, the result is very high relative humidity, possibly followed by mold and mildew. Green Blog: Squeezing Humidity Out of the Air 2011-08-12T12:08:41Z Unlike areas of the southwest where understory brush and organic material increases the chance of major fires, fire in this area is mostly dependent on temperature, relative humidity and drought conditions. Climate Change-Induced Wildfires May Alter Yellowstone Forests 2011-07-27T15:40:00Z Temperatures can soar to 35 degrees Celsius, with relative humidity near 100 percent, factors that could render a $75,000 bottle of Chateau d’Yquem undrinkable. Lafite at $230,000 a Bottle Means Boom for Hong Kong Wine Vaults 2011-07-21T16:41:28Z The team wanted to use the most accurate method for estimating ET, the Penman–Monteith equation, which factors in temperature, wind, solar radiation and relative humidity. Smart Irrigation: A Supercomputer Waters the Lawn 2011-07-04T10:15:05.227Z A depression in the percentage of relative humidity accompanies this surge of warmer air. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z By this means the shrinking and lengthening of the hair cause the pointer to traverse a graduated arc indicating the relative humidity. A Treatise on Meteorological Instruments Explanatory of Their Scientific Principles, Method of Construction, and Practical Utility 2011-06-19T02:00:15.717Z There the relative humidity rose from almost zero, in the anti-cyclone on the twenty-first, to saturation at the same level in the cyclone. Sounding the Ocean of Air 2011-05-31T02:00:35.603Z The relative humidity, providing the actual amount of vapour present remains unchanged, depends upon the temperature of the atmosphere. North America 2011-05-05T02:00:20.027Z The outputs for temperature, wind, solar radiation and relative humidity are then funneled into the calculations of ET values, which are transmitted to customers' controllers by 8 P.M. Smart Irrigation: A Supercomputer Waters the Lawn 2011-07-04T10:15:05.227Z The instruments used in this study were unmodified Belfort hygrothermographs containing as sensing units a hair element for relative humidity and a Bourdon tube for air temperatures. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Particular attention must be paid to the relative humidity of the air in egg stores. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" 2011-04-03T02:00:20.883Z It has been pointed out that the relative humidity has an effect on the dust by increasing the size of the particles and so increasing the haze. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z At 50 percent relative humidity, 40° Fahrenheit air contains only a quarter of the water vapor at air at 80° F. But absolute humidity quantifies the mass of water vapor in air, irrespective of temperature. Dry Air Might Boost Flu Transmission 2010-09-15T14:39:00Z Average cloudiness is about 55 percent, and average relative humidity is as high as 70 to 75 percent. Area Handbook for Bulgaria Yet even in the arid continental interiors in summer the absolute vapour content is surprisingly large, and in the hottest months the percentages of relative humidity may reach 20% or 30%. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" Incubation is then conducted for 6 to 7 days at 90° F. and 85 percent relative humidity. All About Coffee Wood absorbs or loses moisture in proportion to the relative humidity in the air, not according to the temperature. Seasoning of Wood This analysis was among the first to base moisture comparisons on absolute rather than relative humidity. Dry Air Might Boost Flu Transmission 2010-09-15T14:39:00Z Nuts to be used for eating purposes shortly after harvest may be stored at lower relative humidities but should be placed in cold storage. Northern Nut Growers Association Incorporated 39th Annual Report at Norris, Tenn. September 13-15 1948 But high relative humidity and wind—even a light breeze—give the same degree of cold a penetrating feeling of chill which may be unbearable. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" Besides water to drink, they require an atmosphere saturated with moisture, like that of their native island, the relative humidity being about seventy on the Hygrodeik scale. The Atlantic Monthly, Volume 18, No. 106, August, 1866 To find the relative humidity by use of wet-and-dry-bulb hygrometer or psychrometer: Place the instrument in a strong circulation of air, or wave it to and fro. Seasoning of Wood Previous relative humidity measurements had explained only 12 percent of the variation in rates of flu transmission and 36 percent of the variability seen in virus survival, Shaman points out. Dry Air Might Boost Flu Transmission 2010-09-15T14:39:00Z Preliminary results on pollen storage indicate that Corylus americana pollen can be stored for eight months or more in a viable condition at 0° C. with a range of 30 to 40% relative humidity. Northern Nut Growers Association Thirty-Fourth Annual Report 1943 No general law governs the variations of relative humidity with altitude, but on the mountains of Europe the winter is the driest season, and the summer the dampest. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" As Forster slept that early summer night, weathermen across the world were marking their weather maps with thousands of observations—feathery wind arrows, temperatures, barometric pressures and relative humidities. Warning from the Stars The horizontal line passing through this intersection will give the relative humidity. Seasoning of Wood Humidity.—The relative humidity of the air, that is the amount of moisture it contains short of complete saturation which is represented by 100, is, at 9 A.M., Hertfordshire Normal conditions are when the temperature and relative humidity of the air decrease with an increase in altitude. The Report on Unidentified Flying Objects Physiological Effects of Heat and Humidity.—Tropical heat is associated with high relative humidity except over deserts and in dry seasons. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" Weather Bureau should, in the hands of an expert, give results making possible measurements accurate to two or three per cent. of relative humidity or forty to sixty units of vapor pressure. The Dollar Hen The horizontal line passing through this intersection shows the relative humidity to be 64 per cent. Seasoning of Wood But there are undoubtedly other complications besides the evaporations from the soil and the relative humidity of the air to be considered in making an enquiry into the causes of good and bad scent. A Cotswold Village But sometimes a condition will occur where at some level, instead of the temperature and/or relative humidity decreasing with altitude, it will begin to increase. The Report on Unidentified Flying Objects The diurnal ascending air currents of summer usually give mountains their maximum cloudiness and highest relative humidity in the warmer months, while winter is the drier and clearer season. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" A low relative humidity gives comfort and freedom from sunstroke even when the thermometer registers the shade temperature in three figures. Arizona Sketches To find how much water per cubic foot is contained in the air: Find the relative humidity as in example 1. Seasoning of Wood The iodide curve follows closely that of relative humidity, clouds, and rain; the thallium curve stands in no relation to it. Scientific American Supplement, No. 275, April 9, 1881 This cold belt wrings the water out of the westerly winds, so that by the time they reach the warm land their relative humidity is low. Inca Land Explorations in the Highlands of Peru Characteristic, also, of marine climates is a prevailingly higher relative humidity, a larger amount of cloudiness, and a heavier rainfall than is found over continental interiors. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" We also made observations regarding soil, atmospheric temperature and relative humidity and took soil samples to measure the moisture content. 12th November: Left for New College as usual. Free from School To find the dew-point: Obtain the relative humidity as in example 1. Seasoning of Wood The lowest temperature recorded was 32.7 degrees F. The average relative humidity for the four months ending April 30 was 93 per cent., leading to copious condensation on the instruments exposed to the air. The Home of the Blizzard Being the Story of the Australasian Antarctic Expedition, 1911-1914 The amount of water actually found in a given volume of air at a certain temperature, compared with the largest amount it can hold, is called the relative humidity of the air. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall The cloudiness and relative humidity average high on western coasts, with the maximum in the colder season. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" The soil environment is generally quite moist; even when the soil seems a little dryish the relative humidity of the soil air usually approaches 100 percent. Organic Gardener's Composting This will be found at nearly 64 per cent relative humidity. Seasoning of Wood For instance, steam at atmospheric pressure and heated to 248 degrees Fahrenheit has a relative humidity of only 50 per cent and is just as dry as air containing the same humidity. Seasoning of Wood As the temperature rises in spring, with a decrease in the relative humidity, and an increase in direct sunshine, evaporation from the soil surface increases greatly. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall Superheated steam is nothing more than water vapor at a relative humidity less than saturation, but is usually considered at pressures above atmospheric, and in the absence of air. Seasoning of Wood When it is superheated it is just as dry as air containing the same relative humidity. Seasoning of Wood At the end of each barometer line will be found a fraction which represents the proportion of the relative humidity already found, which must be added or subtracted for a change in barometric pressure. Seasoning of Wood Knowing the temperature in the drying room and the dew point, the relative humidity is thus determined. Seasoning of Wood Similarly, evaporation from soils goes on rapidly under a low and slowly under a high percentage of relative humidity. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall It is doubly important to maintain a uniform temperature and avoid fluctuations in the dry kiln, since a change in temperature will greatly alter the relative humidity. Seasoning of Wood This can be done by means of the relative humidity, as stated before. Seasoning of Wood The relative humidity is found, by the method given in example 1, to equal 30 per cent. Seasoning of Wood The horizontal line passing through this intersection will give the relative humidity. Seasoning of Wood All wet or moist substances lose by evaporation most of the water that they hold, providing the conditions of temperature and relative humidity are favorable. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall The temperature is higher; the relative humidity lower, and the winds usually more abundant in arid than in humid regions. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall Some of the conditions influencing the transpiration may be enumerated as follows:— First, transpiration is influenced by the relative humidity. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall It may be carried further, however, by heating in partially humidified air, proportioning the relative humidity each time it is heated to the degree of moisture present in the wood. Seasoning of Wood The fact that transpiration is greater under a low relative humidity is of greatest importance to the dry-farmer who has to contend with the dry atmosphere. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall As shown in Chapter IV, the relative humidity becomes smaller as the rainfall decreases. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall For that reason many students of aridity pay little attention to temperature, relative humidity, or winds, and simply measure the evaporation from a free water surface in the locality in question. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall In New York the relative humidity in summer is about 73 per cent; in Salt Lake City, about 35 per cent. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall Fifty per cent relative humidity, therefore, signifies that only half the amount of vapor required to saturate the space at the given temperature is present. Seasoning of Wood It is an interesting observation that even with the same relative humidity, temperature, and wind, transpiration is reduced to a minimum during the night and increases manyfold during the day when direct sunlight is available. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall The lower the relative humidity is at a given temperature, the more rapidly will water evaporate into the air. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall A relative humidity of 100 per cent means that the air is saturated; of 50 per cent, that it is only one half saturated. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall To the dry-farmer, therefore, the relative humidity or degree of dryness of the air is of very great importance. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall The main things influencing evaporation are, first, the quantity of heat supplied and, second, the relative humidity of the immediately surrounding space. Seasoning of Wood |
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