%0 Dataset
%T HiWATER: Dataset of hydrometeorological observation network (eddy covariance system of A’rou Superstation, 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/1ee6b0eb-cb95-49a3-856a-501f85e9fcda
%W NCDC
%A Li Xin
%A CHE Tao 
%A Xu ziwei
%A Zhang Yang
%A Tan Junlei
%K Latent heat flux;carbon dioxide flux;sensible heat flux;radiation
%X This dataset contains eddy related instrument observation data from December 29, 2012 to November 19, 2013 at the Aluo Super Station on the Heihe Hydrological and Meteorological Observation Network. The station is located in Caodaban Village, Aruo Township, Qilian County, Qinghai Province, with a high-altitude grassland as the underlying surface. The latitude and longitude of the observation point are 100.4643E, 38.0473N, and the altitude is 3033m. The height of the eddy covariance instrument is 3.5m, the sampling frequency is 10Hz, the ultrasonic direction is due north, and the distance between the ultrasonic wind speed temperature instrument and the CO2/H2O analyzer is 15cm. The original observation data of the eddy covariance instrument is 10Hz, and the published data is 30 minutes of data processed using Edire software. The main processing steps include outlier removal, delay time correction, coordinate rotation (secondary coordinate rotation), frequency response correction, ultrasonic virtual temperature correction, and density (WPL) correction. Simultaneously evaluate the quality of each flux value, mainly by testing the atmospheric stationarity (Δ st) and turbulence similarity characteristics (ITC). The 30 minute flux values output by Edire software were also screened: (1) data with instrument errors were excluded; (2) Exclude data from 1 hour before and after precipitation; (3) Exclude data with a missing rate greater than 3% every 30 minutes from the original 10Hz data; (4) Exclude observation data of weak turbulence at night (u * less than 0.1m/s). The average period of observation data is 30 minutes, with 48 data points per day. Missing data is marked as -6999. Suspicious data caused by instrument drift and other reasons are marked in red font, with data missing due to storage issues with the data collector from February 14th to February 28th. The observed data released includes: date/time Date/Time, wind direction Wdir (°), horizontal wind speed Wnd (m/s