On June 2, 2008, 2km in the intensive observation area of Linze grassland × The ground synchronous observation test of MODIS was carried out on h01-h32 in 2km MODIS synchronous quadrat. The main ground variables measured were canopy temperature and surface temperature. At the same time, the shallow soil moisture was measured, and the distance between each measurement point was 125m. This data can provide a basic data set for the inversion and verification of surface temperature and evapotranspiration from airborne satellite remote sensing data.
Synchronous measurement of surface temperature: round trip observation was conducted twice every 125m along the four East-West transects h01-h08, h09-h16, h17-h24 and h25-h32 in the MODIS quadrat, including crown top temperature, half high temperature and surface thermal radiation temperature measured by hand-held infrared thermometer, and 0-5cm soil temperature obtained by needle thermometer.
Synchronous measurement of soil moisture: observation was carried out every 125m along the four East-West transects of MODIS quadrat: synchronous sample belt 1 (h01-h08), synchronous sample belt 2 (h09-h16), synchronous sample belt 3 (h17-h24) and synchronous sample belt 4 (h25-h32). Among them, pogo portable soil sensors are used in h01-h08, h09-h16 and h17-h24 to obtain soil temperature, soil moisture, loss tangent, soil conductivity, real and imaginary parts of soil complex dielectric, and ring knife soil is taken and dried to obtain weight moisture content, volume moisture content and soil bulk density; In h25-h32, wet soil moisture meter was used to measure the soil water content, conductivity, real part of soil complex dielectric constant and soil temperature; And the ring knife soil is dried to obtain the weight water content, volume water content and soil bulk density.
Due to the time-consuming soil moisture measurement, the soil moisture measurement was not completed on June 2, 2008. Considering the small change of soil moisture, supplementary measurement was carried out for the remaining sample belt on June 3, 2008. Observations were made every 125m along the four East-West transects of synchronous transects h30-h40, h41-h48, h49-h56 and h57-h64 in the MODIS quadrat. Among them, pogo portable soil sensors are used in h41-h48, h49-h56 and h57-h64 to obtain soil temperature, soil moisture, loss tangent, soil conductivity, real and imaginary parts of soil complex dielectric constant, and ring knife soil is taken and dried to obtain weight moisture content, volume moisture content and soil bulk density; At h33-h40, the wet soil moisture meter was used to measure the soil water content, soil conductivity, real part of soil complex dielectric constant and soil temperature; And the ring knife soil is dried to obtain the weight water content, volume water content and soil bulk density.
This data set includes 2 excel tables for surface temperature measurement; 8 excel tables for soil moisture measurement.
On June 2, 2008, 2km in the intensive observation area of Linze grassland × The ground synchronous observation test of MODIS was carried out on h01-h32 in 2km MODIS synchronous quadrat,
Synchronous measurement of surface temperature: round trip observation was conducted twice every 125m along the four East-West transects h01-h08, h09-h16, h17-h24 and h25-h32 in the MODIS quadrat, including crown top temperature, half high temperature and surface thermal radiation temperature measured by hand-held infrared thermometer, and 0-5cm soil temperature obtained by needle thermometer
Synchronous measurement of soil moisture: observation was carried out every 125m along the four East-West transects of MODIS quadrat: synchronous sample belt 1 (h01-h08), synchronous sample belt 2 (h09-h16), synchronous sample belt 3 (h17-h24) and synchronous sample belt 4 (h25-h32). Among them, pogo portable soil sensors are used in h01-h08, h09-h16 and h17-h24 to obtain soil temperature, soil moisture, loss tangent, soil conductivity, real and imaginary parts of soil complex dielectric, and ring knife soil is taken and dried to obtain weight moisture content, volume moisture content and soil bulk density; In h25-h32, wet soil moisture meter was used to measure the soil water content, conductivity, real part of soil complex dielectric constant and soil temperature; And the ring knife soil is dried to obtain the weight water content, volume water content and soil bulk density
Due to the time-consuming soil moisture measurement, the soil moisture measurement was not completed on June 2, 2008. Considering the small change of soil moisture, supplementary measurement was carried out for the remaining sample belt on June 3, 2008. Observations were made every 125m along the four East-West transects of synchronous transects h30-h40, h41-h48, h49-h56 and h57-h64 in the MODIS quadrat. Among them, pogo portable soil sensors are used in h41-h48, h49-h56 and h57-h64 to obtain soil temperature, soil moisture, loss tangent, soil conductivity, real and imaginary parts of soil complex dielectric constant, and ring knife soil is taken and dried to obtain weight moisture content, volume moisture content and soil bulk density; At h33-h40, the wet soil moisture meter was used to measure the soil water content, soil conductivity, real part of soil complex dielectric constant and soil temperature; And the ring knife soil is dried to obtain the weight water content, volume water content and soil bulk density
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CSTR:11738.11.ncdc.NIEER.2021.1822
10.12072/ncdc.NIEER.db1904.2022