It's called an eddy covariance tower.
它被称为涡流协方差塔。
Eddy covariance
原声例句
科学快报-科学美国人Science Quickly, from SCIENTIFIC AMERICAN
TED演讲（视频版）双语精选
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。
科学快报-科学美国人Science Quickly, from SCIENTIFIC AMERICAN
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。
英语百科
Eddy covariance
The eddy covariance (also known as eddy correlation and eddy flux) technique is a key atmospheric measurement technique to measure and calculate vertical turbulent fluxes within atmospheric boundary layers. The method analyzes high-frequency wind and scalar atmospheric data series, and yields values of fluxes of these properties. It is a statistical method used in meteorology and other applications (micrometeorology, oceanography, hydrology, agricultural sciences, industrial and regulatory applications, etc.) to determine exchange rates of trace gases over natural ecosystems and agricultural fields, and to quantify gas emissions rates from other land and water areas. It is frequently used to estimate momentum, heat, water vapour, carbon dioxide and methane fluxes
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