The Seoul Water Vapor Radiometer for the Middle Atmosphere: Calibration, Retrieval, and Validation

Author

De Wachter, Evelyn ; Haefele, Alexander ; Kämpfer, Niklaus ; Ka, Soohyun ; Jung Eun Lee ; Jung Jin Oh

Author_Institution

Inst. of Appl. Phys., Univ. of Bern, Bern, Switzerland

Volume

49

Issue

3

fYear

2011

fDate

3/1/2011 12:00:00 AM

Firstpage

1052

Lastpage

1062

Abstract

A new ground-based 22-GHz radiometer, designed to deliver middle atmospheric water vapor profiles over the mid-latitudinal Asian continent, was designed at the University of Bern, Switzerland. In this paper, we outline the calibration and retrieval concepts of the instrument, which has been in operation in Seoul (37.32° N, 126.57° E), Korea, since November 2006. In addition, a quality assessment of the delivered profiles is presented, through the validation with the data from the Microwave Limb Sounder (MLS) onboard the Aura satellite. The differences between the Seoul Water Vapor Radiometer and Aura MLS are better than 2 % between 1 and 0.2 hPa, and they decline nearly linearly to -14.5 % between 0.2 and 0.01 hPa.

Keywords

atmospheric humidity; atmospheric techniques; calibration; radiometry; remote sensing; AD 2006 11; Aura satellite; Bern University; Korea; Microwave Limb Sounder; Seoul Water Vapor Radiometer; Switzerland; calibration; frequency 22 GHz; middle atmosphere; midlatitudinal Asian continent; retrieval; validation; Microwave; radiometry; retrieval; water vapor;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/TGRS.2010.2072932

Filename

5604684