TY  - Data
T1  - Eco hydrological remote sensing experiment of Heihe River: data set of Hydrometeorological observation network
A1  - Liu shaomin
A1  - Li xin
A1  - Chetao
A1  - Xu ziwei
A1  - Tan Junlei
DO  - 10.12072/ncdc.NIEER.db0057.2020
PY  - 2021
DA  - 2021-08-27
PB  - National Cryosphere Desert Data Center
AB  - The data set contains the flux observation data of large aperture scintillator at youa Rou station on the Heihe hydrometeorological observation network. Two sets of German bls450 have been set up at the upstream ARJO station_ AR and domestic large aperture scintillator of zzlas, and the North Tower is the receiving end of zzlas and bls450_ At the transmitting end of AR, the south tower is the transmitting end of zzlas and bls450_ Receiving end of AR. The observation period of zzlas is from January 1, 2014 to December 31, 2014, bls450_ AR was observed from January 19, 2014 to December 12, 2014. The station is located in caodaban village, aro Township, Qilian County, Qinghai Province, with alpine grassland on the underlying surface. The longitude and latitude of the north tower are 100.4712e, 38.0568n, and the longitude and latitude of the south tower are 100.4572e, 38.0384n, with an altitude of about 3033m. The effective height of the large aperture scintillator is 9.5m, the optical path length is 2390m, and the sampling frequency is 1min The original observation data of the large aperture scintillator is 1min, and the released data is 30min data after processing and quality control. The sensible heat flux is mainly obtained by iterative calculation based on Monin obhoff similarity theory in combination with the observation data of the automatic weather station. The main quality control steps include:（ 1) Eliminate the data when cn2 reaches saturation (bls450_ AR：Cn2 >7.25E-14，zzlas：Cn2 >7.84 E-14）；（ 2) Eliminate data with weak demodulated signal strength (bls450_ AR: Average X Intensity-20mv）；& emsp;（ 3) Eliminate the data of precipitation time& emsp;（ 4) Eliminate the data of weak turbulence under stable conditions (U * less than 0.1M / s)& emsp; During iterative calculation, for bls450_ AR, select the stability universal function of thiermann and Grassl, 1992; For zzlas, the stability universal function of Andreas, 1988 is selected. For details, please refer to Li
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/4a7729e3-27c0-4910-9365-0fb53026284a
ER  -