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遥感所胡斯勒图研究员在我室报告
来源:LASG    访问次数:    更新时间:2018-1-30

Ice cloud properties from Himawari-8/AHI geostationary satellite measurement: Estimation of the shortwave radiative flux

胡斯勒图 研究员
中科院遥感所

2018年1月30日(星期二)15:00
科研楼303会议室

报告会主持人:戴铁 副研究员

Abstract
 
Himawari-8 is a new-generational geostationary meteorological satellite, which is successfully launched by the Japan Meteorological Agency (JMA) on 7 October 2014. The Himawari-8 carries a multi-spectral sensor of Advanced Himawari Imager (AHI). The AHI has 16 observational bands from visible to thermal infrared spectral regions with nadir spatial resolutions of 500 m (one band), 1000-m (two bands) and 2000 m (13 bands). Performance of the spatial and spectral resolution of the AHI is close to the low orbit satellite e. g. MODIS instrument in the nadir observations.

Ice cloud property products from satellite measurements are widely applied in monitoring climate change, numerical weather prediction and meteorological disasters. In this study, optical and microphysical properties of the ice cloud are retrieved from Himawari-8 satellite measurements. Fractal ice partial scattering model called “Voronoi” is applied in the “Comprehensive Program for Cloud Optical Measurement” (CAPCOM) algorithmto retrieve the ice cloud properties from AHI measurements. Ice cloud properties from AHI measurement are compared to MODIS collections-6 ice cloud products for characterizing the retrieval accuracy of the Voronoi model. Furthermore, shortwave radiative flux (SRF) in ground surface is estimated from retrieval results of the cloud properties by using Rstar radiative transfer model. Finally, the SRF is validated by using ground surface in-situ observation data in East Asia.

 
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