A temperature dependent correction to the model for microwave excess emissivity of the ocean due to surface winds

Author

Giampaolo, Jude ; Ruf, Christopher S.

Author_Institution

Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA, USA

Volume

4

fYear

1999

fDate

1999

Firstpage

2312

Abstract

Coincident measurement of ocean surface windspeed, temperature, and microwave emissivity reveal a clear dependence of the slope of the emissivity versus windspeed on the temperature. Water at higher temperatures has a greater increase in emissivity per unit wind speed. This temperature dependence is a residual result of the dependence of the specular ocean surface emissivity on temperature. As the temperature increases, specular microwave emissivity decreases. Since wind roughening and foam increase the emissivity, the increase with respect to the specular baseline is proportionately larger at higher temperatures

Keywords

atmospheric techniques; ocean waves; oceanographic techniques; radiometry; remote sensing; wind; 18 GHz; SHF; boundary layer; foam; marine atmosphere; measurement technique; microwave emissivity; microwave excess emissivity; microwave radiometry; model; ocean wave; remote sensing; sea surface; specular microwave emissivity; speed; surface layer; surface wind; temperature; temperature dependent correction; wind; wind roughening; windspeed; Assembly; Delay estimation; Geophysical measurements; Ocean temperature; Rough surfaces; Sea measurements; Sea surface; Surface roughness; Temperature dependence; Wind speed;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 1999. IGARSS '99 Proceedings. IEEE 1999 International

Conference_Location

Hamburg

Print_ISBN

0-7803-5207-6

Type

conf

DOI

10.1109/IGARSS.1999.775112

Filename

775112