%0 Dataset
%T Brightness and temperature data set of passive microwave SSM / I and ssmis in China (1987-2015)
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/62906ffd-feb4-44ad-b426-b095c5c02115
%W NCDC
%A Jin rui
%A Chetao
%K SSMIS;SSM/I;Brightness Temperature
%X This data set includes the microwave brightness temperatures obtained by the spaceborne microwave radiometer SSM/I carried by the US Defense Meteorological Satellite Program (DMSP) satellite. It contains the twice daily (ascending and descending) brightness temperatures of seven channels, which are 19H, 19V, 22V, 37H, 37V, 85H, and 85V.The Specialized Microwave Imager (SSM/I) was developed by the Hughes Corporation of the United States. In 1987, it was first carried into the space on the Block 5D-/F8 satellite of the US Defense Meteorological Satellite Program (DMSP) to perform a detection mission. In the 10 years from when the DMSP soared to orbit in 1987 to when the TRMM soared to orbit in 1997, the SSM/I was the world's most advanced spaceborne passive microwave remote sensing detection instrument, having the highest spatial resolution in the world. The DMSP satellite is in a near-polar circular solar synchronous orbit; the elevation is approximately 833 km, the inclination is 98.8 degrees, and the orbital period is 102.2 minutes. It passes through the equator at approximately 6:00 local time and covers the whole world once every 24 hours. The SSM/I consists of seven channels set at four frequencies, and the center frequencies are 19.35, 22.24, 37.05, and 85.50 GHz. The instrument actually comprises seven independent, total-power, balanced-mixing, superheterodyne passive microwave radiometer systems, and it can simultaneously measure microwave radiation from Earth and the atmospheric systems. Except for the 22.24 GHz frequency, all the frequencies have both horizontal and vertical polarization states.Some Eigenvalues of SSM/IChannel Frequency(GHz) Polarization Mode (V/H) Spatial Resolution(km * km) Footprint Size(km)19V 19.35 V 25×25 5619H 19.35 H 25×25 5622V 22.24 V 25×25 4537V 37.05 V 25×25 3337H 37.05 H 25×25 3385V 85.50 V 12.5×12.5 1485H 85.50 H 12.5×12.5 14File Format and Naming:Each group of data consists of remote sensing data files, .JPG image files and .