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Proceedings Paper

Cloud liquid water retrieval using AMSR-E on land
Author(s): Dabin Ji; Jiancheng Shi
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Paper Abstract

This paper mainly discussed how to retrieve cloud liquid water over land using sensitivity of ΔTb18.7 / ΔTb36.5 (ratio of polarization differences of AMSR-E brightness temperature at frequency 18.7GHz and 36.5GHz) to cloud liquid water. The surface emissivity parameter Δ18.7/Δε36.5 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 Δε18.7/Δε36.5 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.

Paper Details

Date Published: 8 November 2012
PDF: 8 pages
Proc. SPIE 8523, Remote Sensing of the Atmosphere, Clouds, and Precipitation IV, 85231B (8 November 2012); doi: 10.1117/12.977178
Show Author Affiliations
Dabin Ji, Institute of Remote Sensing Applications (China)
Jiancheng Shi, Institute of Remote Sensing Applications (China)


Published in SPIE Proceedings Vol. 8523:
Remote Sensing of the Atmosphere, Clouds, and Precipitation IV
Tadahiro Hayasaka; Kenji Nakamura; Eastwood Im, Editor(s)

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