TY  - Data
T1  - Heihe River Integrated Remote Sensing joint experiment: aster ground synchronous observation data set in Linze grassland intensive observation area (May 28, 2008)
A1  - Jin rui
A1  - Gai Chunmei
A1  - Han Xujun
A1  - Hao Xiaohua
A1  - HuangChunling
A1  - Liang Ji
A1  - Ma mingguo
A1  - Wang shuguo
DO  - 10.12072/ncdc.NIEER.db0099.2020
PY  - 2021
DA  - 2021-08-27
PB  - National Cryosphere Desert Data Center
AB  - On May 28, 2008, aster ground synchronous observation test was carried out in quadrat B (saline alkali land), quadrat D (alfalfa land) and quadrat e e e (barley land) in Linze grassland intensive observation area. This data can provide data for the inversion and verification of surface temperature and evapotranspiration of airborne satellite remote sensing data. The observation contents of this test include surface radiation temperature and shallow soil moisture, and the quadrat size is 360m × 360m, the spacing between various points is 60m, and there are 49 sample points in each quadrat. Surface radiation temperature observation: quadrats B, D and E: during simultaneous temperature measurement, the hand-held infrared thermometer is used for continuous measurement in an east-west linear shape. The starting point and end point of the measurement route are marked by the sample point number in the data sheet (the distance between the starting point and the end point is 60m), such as d22-23, which means moving from sample point 22 of quadrat d to sample point 23. For the distribution of sampling points and quadrats, please refer to the quadrat distribution map of grassland intensive observation area. Quadrat B is an equidistant sampling scheme, i.e. 5 measurements every 5m from the starting point; Quadrat D and E are non equidistant measurements, which are measured randomly in the process of advance. For calibration information of hand-held infrared thermometer, please refer to "calibration data. XLS of hand-held thermal radiometer" in the data directory. Soil moisture observation: quadrat B: the weight water content, volume water content and soil bulk density are obtained by taking soil with a ring knife and drying; Needle thermometer to obtain 0-5cm average soil temperature; Quadrat D: pogo portable soil sensor is used to obtain soil temperature, soil moisture, loss tangent, soil conductivity, real and imaginary parts of soil complex dielectric; Needle thermometer to 
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/81a10e86-2bf7-45ba-8843-4fcc5a652975
ER  -