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On the Estimation of Land Surface Parameters by Using FY-3A Microwave Radiometer Imager(MWRI) |
YANG Hu1, SHI Jian-cheng2
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(1.National Satellite Meteorological Center,Beijing100081,China;2.Institute of Remote Sensing Application,Chinese Academy of Sciences,Beijing100101,China) |
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Abstract FY3 is new generation polar orbit meteorological satellite of China plan to launch in 2006. There is total of 11 different remote sensing sensor onboard it, design to get the geophysical parameters of atmosphere, land, and ocean surfaces at the same time all day and night and in all weather conditions. The MWRI is a 10-channel five-frequency linearly polarized, passive microwave radiometer imager system onboard the FY3, which measures atmospheric, ocean, and terrain microwave brightness temperatures at 10.65, 18.7, 22.3, 36.5, and 89 GHz. In this paper, in order to derive surface temperature and soil moisture from the MWRI data, a new developed microwave RT model, AIEM was used to simulate the
microwave emission characteristic of bare soil, and an new surface soil moisture inversion algorithm was established, which is only need the 10.65GHz V and Hchannel data. Applying the algorithm to AMSR-E orbit data, which is very similar with the FY3/MWRI, the daily globe soil moisture and surface temperature distribution was derived.
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Received: 20 September 2004
Published: 16 November 2011
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