The analysis of atmospheric absorption model based on ground-based microwave radiometer

Author

He, Jieying ; Zhang, Shengwei ; Zhang, Yu ; Sun, Fenglin

Author_Institution

Center for Space Sci. & Appl. Res., Chinese Acad. of Sci., Beijing, China

Volume

1

fYear

2010

fDate

17-20 Sept. 2010

Firstpage

1

Lastpage

4

Abstract

The paper introduces two widely used atmospheric absorption models: MPM by Liebe in 1989 and Ulaby in 1976. Compare between them based on ground-based microwave radiometer, this paper presents an atmospheric absorption model with improvement including local line absorption, noresonant dry air spectrum, water vapor continuum, suspended water droplet refractivity and rain effects. Also, using the improved absorption model, the paper simulates the temperature and humidity weighting functions and brightness temperature. The results show that in the retrievals of ground-based microwave radiometer, the improvement of atmospheric absorption can derive more accurate brightness temperatures which are more agreement with the actual measuring brightness temperatures.

Keywords

atmospheric humidity; atmospheric techniques; atmospheric temperature; radiometry; rain; MPM model; Ulaby model; atmospheric adsorption model; brightness temperature; ground-based microwave radiometer; humidity weighting function; local line absorption; nonresonant dry air spectrum; rain effects; suspended water droplet refractivity; temperature weighting function; water vapor continuum; Absorption; Atmospheric measurements; Atmospheric modeling; Brightness temperature; Humidity; Mathematical model; Microwave radiometry;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals Systems and Electronics (ISSSE), 2010 International Symposium on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-6352-7

Type

conf

DOI

10.1109/ISSSE.2010.5607093

Filename

5607093