This data set is the 30 min eddy covariance data of Qilian station from October 1, 2011 to December 31, 2011. The observation items are: horizontal wind speed UX (M / s), horizontal wind speed uy (M / s), vertical wind speed UZ (M / s), ultrasonic temperature TS (centigrade), carbon dioxide concentration CO 2 (mg / m ^ 3), water vapor concentration H 2O (g / m ^ 3), pressure press (kPa). The data sampling rate is 10Hz per second.
|collect time||2011/09/29 - 2011/12/31|
|collect place||Upper reaches of Heihe River in hulugou Basin|
|data size||2.4 MB|
|Data time resolution|
Instrument monitoring, manual collection.
Eddy covariance system is a micro meteorology measurement method. It adopts the principle of vorticity correlation and uses fast response sensors to measure the mass exchange and energy exchange on the underlying surface of the atmosphere. The core of the open circuit eddy covariance system is composed of CR1000 data collector, csat3 three-dimensional ultrasonic wind speed and direction sensor and li-7500 open circuit CO2 / H2O gas analyzer (EC150). Eddy covariance system is a new instrument purchased in this project, which takes a long time to order. It was installed in early October 2011, and the data is short.
The eddy covariance system was first installed in September 2011, so the data period in 2011 is: there are some missing data in the installation and commissioning stage, and Nan in the data is the missing data caused by data acquisition power failure or sensor problems.
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