Abstract
A variational method based on 1Dvar is proposed to retrieve Integrated Precipitable Water vapor (IPW) in typhoon area from brightness temperatures measured by the Microwave Humidity and Temperature Sounder (MWHTS) on the Chinese Fengyun 3C (FY-3C) polar-orbit meteorological satellite. Water vapor values provided by European Centre for Medium-Range Weather Forecasts (ECMWF) were used as background. The performance of the retrieval method was demonstrated by using an independent dataset of MWHTS observations and the corresponding total water vapor values from ECMWF. Results were compared with the measurements obtained from radiosonde, NCEP/WRF and MiRS software.
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