Modeling of roughness-salinity microwave anomalies at S and L bands

Author

Raizer, V.Y.

Author_Institution

Environ. Technol. Lab., NOAA, Fairfax, VA, USA

Volume

4

fYear

1999

fDate

1999

Firstpage

2309

Abstract

A numerical modeling of roughness-salinity-temperature microwave radiometric anomalies (RSTA) are made specially for S- and L-bands. RSTA are estimated using two electromagnetic approaches: resonance and macroscopic. The calculated brightness temperature contrasts induced by salinity variations are maximal in the range of wavelengths λ=18...21 cm at grazing view angles and vertical polarization. In this case the brightness temperature sensitivity to salinity ranges over 0.2-1.2° Kelvin/ppt, depending on the surface parameters

Keywords

ocean waves; oceanographic techniques; radiometry; remote sensing; 18 to 21 cm; L-band; S-band; SHF; UHF; brightness temperature contrast; grazing view angles; incidence angle; macroscopic theory; measurement technique; microwave anomalies; microwave radiometry; model; numerical model; ocean wave; remote sensing; resonance theory; rough surface; salinity; sea surface; vertical polarization; Electromagnetic heating; Electromagnetic scattering; Microwave radiometry; Ocean temperature; Permittivity; Resonance; Rough surfaces; Sea surface; Surface roughness; Surface waves;

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.1999.775111

Filename

775111