ED037-0022
Retrieving Brightness Temperatures Using Satellite Remote Sensing Measurements.
Abstract:
The landscape brightness temperature (Tb) data derived from satellite microwave remote sensing is closely linked to many land and atmospheric parameters such as surface energy budget, hydrological cycle activity, vegetation growing season dynamics, soil moisture, water vapor, land surface emissivity, freeze and thaw state. Various satellites record Tb at different microwave frequencies and spatial resolution; the data is not comprehensive in its singularity, it must be matched and compared with one another to build global diurnal cycle of Tb out the use of the satellite sensors. In this project , we investigated the utility of multi-frequency and dual polarization Tb measurements from the Global Precipitation Measurement (GPM) Microwave Imager (GMI) and the DMSP F16, F17 and F18 Special Sensor Microwave Imager Sounder (SSMIS) to map the global patterns and daily variations of Tb throughout a whole year. In the final step, the patterns were compared to each other to be validated and the optimum values were obtained.