It's called an eddy covariance tower.

它被称为涡流协方差塔。

So we were installing what's called an " eddy covariance tower, " which is a series of instruments that measures the exchange of greenhouse gases, like carbon dioxide and methane, between the land and the atmosphere.

所以我们安装了一个被称为“涡度协方差塔”的装置，这种装置由多种仪器构成，用于测量地面与大气温室气体的交换，例如二氧化碳和甲烷。

Gosselin: So on the tower for eddy covariance, in principle, there's two main instruments: one instrument that measures the concentration of gas that we're interested in in the air and [another] that uses infrared.

Gosselin：原则上，在涡流协方差塔上有两种主要仪器：一种测量空气中我们感兴趣的气体浓度，[另一种]使用红外线。