The dataset of eddy covariance observations was obtained at the A'rou freeze/thaw observation station from Jul. 14, 2008 to Dec. 31, 2010, in Wawangtan pasture (E100°28′/N38°03′, 3032.8m), Daban, A'rou. The experimental area with a flat and open terrain slightly sloping from southeast to northwest and hills and mountains stretching outwards is an ideal horizontal homogeneous underlying surface.
The original observation items included the latitudinal wind speed Ux (m/s), the latitudinal wind speed Uy (m/s), the longitudinal wind speed Uz (m/s), the ultrasonic temperature Ts (°C), co2 consistency (mg/m^3), h2o consistency (g/m^3), air pressure (KPa) and the abnormal ultrasonic signal (diag_csat). The instrument height was 2.81m, the ultrasound direction was at an azimuth angle of 0°, the distance between Li7500 and CSAT3 was 30m and sampling frequency was 10HZ/s. The instrument mount was 3.15m, the ultrasound direction was at an azimuth angle of 86°, the distance between Li7500 and CSAT3 was 22cm and sampling frequency was 10HZ/s.
The dataset was released at three levels: Level0 were the raw data acquired by instruments; Level1, including the sensible heat flux (Hs), the latent heat flux (LE_wpl), and co2 flux (Fc_wpl), were real-time eddy covariance output data and stored in .csv month by month; Level2 were processed data in a 30-minute cycle after outliers elimination, coordinates rotation, frequency response correction, WPL correction and initial quality control. The data were named as follows: station name +data level+data acquisition date. As for detailed information, please refer to Meteorological and Hydrological Flux Data Guide and Eddy Covariance Observation Manual.
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Using this data, the data citation is required to be referenced and the related literatures are suggested to be cited.
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The CAS (Chinese Academy of Sciences) Action Plan for West Development Project
National Program on Key Basic Research Project (973 Program
10.HiWATER: Dataset of flux observation matrix (eddy covariance system of Zhangye wetland Station) of the MUlti-Scale Observation EXperiment on Evapotranspiration over heterogeneous land surfaces 2012 (MUSOEXE-12)
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Metadata Author： Huang Guanghui