Title :
A model of the wind direction signature in the Stokes emission vector from the ocean surface at microwave frequencies
Author :
Reising, Steven C. ; Camps, Adriano J.
Author_Institution :
Microwave Remote Sensing Lab., Massachusetts Univ., Amherst, MA, USA
Abstract :
This paper presents a model of the Stokes emission vector from the ocean surface. The ocean surface is described as an ensemble of facets with Cox and Munk´s (1954) Gram-Charlier slope distribution. The study discusses the impact of different up-wind and cross-wind rms slopes, skewness, peakedness, foam cover models and atmospheric effects on the azimuthal variation of the Stokes vector, as well as the limitations of the model. Simulation results compare favorably, both in mean value and azimuthal dependence, with SSM/I data at 53° incidence angle and with JPL´s WINDRAD measurements at incidence angles from 30° to 65°, and at wind speeds from 2.5 to 11 m/s
Keywords :
electromagnetic wave polarisation; ocean waves; remote sensing; wind; Gram-Charlier slope distribution; SSM/I data; Stokes emission vector; Stokes vector; atmospheric effects; azimuthal dependence; azimuthal variation; cross-wind; foam cover models; mean value; microwave frequencies; ocean surface; peakedness; rms slopes; skewness; up-wind; wind direction signature; Atmospheric modeling; Frequency; Laboratories; Ocean temperature; Optical scattering; Optical surface waves; Remote sensing; Scanning probe microscopy; Sea surface; Wind speed;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2000. Proceedings. IGARSS 2000. IEEE 2000 International
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-6359-0
DOI :
10.1109/IGARSS.2000.859701
