%0 Dataset
%T Remote sensing experiment of ecological hydrology in Heihe River: data set of Hydrometeorological observation network (upper eddy correlator of Daman super station-2013)
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/a240faeb-bac7-43e3-b2e8-569dff0c8a7a
%W NCDC
%R 10.12072/ncdc.NIEER.db0084.2020
%A Xu ziwei
%A Liu shaomin
%A Li xin
%A Chetao
%A Ren zhiguo
%A Tan Junlei
%K Eddy correlator;farmland;hydrometeorological observation network;sensible heat flux;carbon dioxide flux;latent heat flux
%X The data set contains the eddy correlator observation data of the upper layer of Daman super station in the middle reaches of Heihe hydrometeorological observation network from September 15, 2012 to December 31, 2013. The station is located in Daman irrigation area, Zhangye City, Gansu Province, with corn as the underlying surface. The longitude and latitude of the observation point are 100.37223e, 38.85551n, and the altitude is 1556.06m. The frame height of eddy correlator is 34m, the sampling frequency is 10Hz, the ultrasonic direction is due north, and the distance between ultrasonic anemometer and CO2 / H2O analyzer is 17cm The original observation data of eddy correlator is 10Hz, and the released data is the 30 minute data processed by edire software. The main processing steps include: field value elimination, delay time correction, coordinate rotation (quadratic coordinate rotation), frequency response correction, ultrasonic virtual temperature correction and density (WPL) correction. At the same time, the quality of each flux value is evaluated, mainly the atmospheric stability（ Δ St) and turbulence similarity characteristics (ITC). The 30 min flux value output by edire software is also screened: （ 1) Eliminate the data in case of instrument error（ 2) Eliminate the data 1H before and after precipitation（ 3) Eliminate the data with deletion rate greater than 3% every 30min in the 10Hz original data（ 4) Eliminate the observation data of weak turbulence at night (U * less than 0.12M / s) The average period of observation data is 30 minutes, 48 data a day, and the missing data is marked as - 6999. Suspicious data caused by instrument drift and other reasons are identified in red font. The instrument was calibrated from May 26 to May 30, 2013, and the CO2 / H2O analyzer was repaired from July 13 to September 24, 2013. During this period, the data was missingThe published observation data include: date / time, wind direction WDIR (°), horizontal wind speed wnd (M /