Title :
Modeling of roughness-salinity microwave anomalies at S and L bands
Author_Institution :
Environ. Technol. Lab., NOAA, Fairfax, VA, USA
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;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1999. IGARSS '99 Proceedings. IEEE 1999 International
Conference_Location :
Hamburg
Print_ISBN :
0-7803-5207-6
DOI :
10.1109/IGARSS.1999.775111
