TY  - Data
T1  - Heihe River Integrated Remote Sensing joint experiment: ENVISAT ASAR ground synchronous observation data set in Linze grassland intensive observation area (May 24, 2008)
A1  - Jin rui
A1  - HuXiaoli
A1  - Wang weizhen
DO  - 10.12072/ncdc.NIEER.db1886.2022
PY  - 2022
DA  - 2022-03-15
PB  - National Cryosphere Desert Data Center
AB  - On May 24, 2008, the ground synchronous observation test of ASAR data was carried out in sample B (saline alkali land), sample D (alfalfa land) and sample e (barley land) in the intensive observation area of Linze grassland. ENVISAT ASAR data is AP mode, VV / VH polarization combination mode, and the transit time is about 11:34bjt. This data can provide a basic ground data set for the development and verification of active microwave remote sensing algorithm for soil moisture and salt retrieval. The synchronous quadrats of soil moisture in the intensive observation area of Linze grassland are 6grid × 6Grid，120m × 120m square. Sampling measurements are performed at the corners of each grid. The following observations were made in this test: Quadrat B: due to the high salt content, the ring knife is used to obtain the weight water content, volume water content and soil bulk density after drying; The average soil temperature of 0-5cm was obtained by needle thermometer; The hand-held infrared thermometer obtains the surface radiation temperature three times. Quadrat D: soil moisture content, electrical conductivity, real part of soil complex dielectric constant and soil temperature are measured by wet soil moisture meter; The average soil temperature of 0-5cm was obtained by needle thermometer; The hand-held infrared thermometer obtains the surface radiation temperature three times. Quadrat e: 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 obtain 0-5cm average soil temperature; The hand-held infrared thermometer obtains the surface radiation temperature three times. This data set includes the excel table of the measured data of three quadrats in the dense observation area of Linze grassland. However, the original data of wet soil moisture rapid tester of quadrat D has not been exported! See metadata "Heihe integrated remote sensing joi
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/4ac6a265-9808-4bef-9f90-7125d66476b8
ER  -