Cloud liquid water retrieval using AMSR-E on land

Dabin Ji; Jiancheng Shi

doi:10.1117/12.977178

8 November 2012 Cloud liquid water retrieval using AMSR-E on land

Dabin Ji, Jiancheng Shi

Proceedings Volume 8523, Remote Sensing of the Atmosphere, Clouds, and Precipitation IV; 85231B (2012) https://doi.org/10.1117/12.977178
Event: SPIE Asia-Pacific Remote Sensing, 2012, Kyoto, Japan

Abstract

This paper mainly discussed how to retrieve cloud liquid water over land using sensitivity of ΔTb_18.7 / ΔTb_36.5 (ratio of polarization differences of AMSR-E brightness temperature at frequency 18.7GHz and 36.5GHz) to cloud liquid water. The surface emissivity parameter Δ_18.7/Δε_36.5 is first estimated using AMSR-E brightness temperature, MODIS water vapor product, and 1-Dimension Microwave Radiative Transfer Model (1DMWRTM). And then, cloud liquid water over land is retrieved using AMSR-E brightness temperature, surface temperature, surface emissivity parameter Δε_18.7/Δε_36.5 and cloud top height with the help of a look up table built by 1DMWRTM. The retrieved cloud liquid water of this algorithm is validated by observation data from ground based ARM site. According to the validation, the correlation of the two is about 0.65, and the RMSE is about 0.14mm.

Citation Download Citation

Dabin Ji and Jiancheng Shi "Cloud liquid water retrieval using AMSR-E on land", Proc. SPIE 8523, Remote Sensing of the Atmosphere, Clouds, and Precipitation IV, 85231B (8 November 2012); https://doi.org/10.1117/12.977178

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