AMSR-E数据参数化法反演液态云水路径研究

doi:10.11927/j.issn.1673-503X.2016.02.008

Abstract

Abstract: Cloud liquid water (vertically-integrated cloud liquid water) is a key parameter in meteorology and cloud physics, and its quantitative measurement is important to climate change, numerical weather prediction (NWP), and severe weather monitoring.Using a combination of the space-borne microwave radiometer AMSR-E and the Moderate Resolution Imaging MODIS with AUQA, relationship between microwave polarization channel bright ness temperature and atmospheric moisture ω was established, and the polarization-difference parameterization (PDP) was improved.The results indicate that cloud liquid water path can be directly retrieved by the Advanced Microwave Scanning Radiometer for earth observing plan (EOS) (AMSR-E) polarization-difference signals at 36.5 GHz and 89 GHz, and the resolution could reach 1 km according to retrieved ω of MODIS.Retrieval of cloud liquid water path from AMSR-E and the presented cloud image by MODIS conforms completely.Compared with the retrieved products from the NCEP 1°×1° 6 h vertically-integrated cloud liquid water data, the error is less than 0.04 kg·m^-2.

Key words: Cloud liquid water path, Microwave remote sensing, AMSR-E (Advanced Microwave Scanning Radiometer for earth observing plan), MODIS(Moderate-Resolution Imaging Spectroradiometer)

CLC Number:

P426

WANG Ying, LI Guo-chun, GAO Yang-hua, DU Qin, ZHAO Zi-qi. Polarization-difference parameterization in estimating liquid water path based on AMSR-E data[J]. Journal of Meteorology and Environment, 2016, 32(2): 59-65.

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Polarization-difference parameterization in estimating liquid water path based on AMSR-E data

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