TY  - Data
T1  - Heihe River Integrated Remote Sensing joint test: ENVISAT ASAR and alos PALSAR ground synchronous observation data sets in the encrypted observation area of Linze station (May 24, 2008)
A1  - Song Yi
DO  - 10.12072/ncdc.NIEER.db1863.2022
PY  - 2022
DA  - 2022-03-15
PB  - National Cryosphere Desert Data Center
AB  - On May 24, 2008, ENVISAT ASAR and alos PALSAR satellite ground synchronous observations were carried out at Linze station, including soil moisture, surface radiation temperature and manual Lai. ENVISAT ASAR data has been obtained, alos PALSAR data has not been obtained.ENVISAT ASAR data is AP mode, VV / VH polarization combination mode, and the transit time is about 11:34bjt. 1. Soil moisture observation. Observation target: 0-5cm topsoil. Observation instrument: ring knife (volume 50cm ^ 3), ml2x soil moisture rapid tester. Observation quadrats and observation times: Desert East-West sample zone (including 40 sub quadrats, one sampling for each sub quadrat corner), desert north-south sample zone (including 9 sub quadrats, one sampling for each sub quadrat center point), observation at the midpoint of 9 small quadrats in wulidun corn field, densification of No. 5 quadrat in the center, and observation at 4 corners (one sampling for each observation point, Ml2x soil moisture meter repeated observation for 3 times, and the pretreatment data is soil volume water content. Data storage: Excel. 2. Observation of surface radiation temperature. Observation instrument: hand held infrared thermometer (cold and drought Institute 5#, cold and drought Institute 6#), and the instruments have been calibrated (please refer to the calibration data of hand-held thermal radiometer. XLS). Observation quadrats and observation times: Desert East-West sample zone (including 40 sub quadrats, each sub quadrat 14-30 repetitions), desert north-south sample zone (including 9 sub quadrats, each sub quadrat 12-30 repetitions). Preprocessing data according to the thermal infrared calibration data (the standard source is blackbody), the measured temperature of each instrument is linearly fitted with the corresponding blackbody temperature to obtain the fitting equation, and then the above fitted equation is used to calibrate the observed original observation data. Data storage: Excel. 3. Manually 
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/d746431c-767d-4be5-a29b-97230dd85c33
ER  -