Title :
NASA Scatterometer measurements of ocean surface winds in tropical cyclones
Author :
Jones, W. Linwood ; Zec, Josko ; Cardone, Vincent J. ; Pierson, Willard J.
Author_Institution :
Univ. of Central Florida, Orlando, FL, USA
Abstract :
The NASA Scatterometer (NSCAT) has obtained realistic measurements of ocean surface winds in hurricanes and typhoons using an improved wind retrieval algorithm. This Spatial Adaptive Retrieval Algorithm (SARA) retrieves wind speeds at each scatterometer backscatter measurement location using an estimate of the wind direction from conventional NSCAT wind vector processing or using directions from a tropical cyclone surface wind numerical model. Also, SARA uses an improved geophysical model function, that has been especially adapted for high wind speeds, to relate the ocean´s normalized radar cross section, sigma-0, and the ocean surface wind vector
Keywords :
atmospheric techniques; geophysical signal processing; meteorological radar; radar signal processing; remote sensing by radar; storms; wind; NASA Scatterometer; NSCAT; SARA; Spatial Adaptive Retrieval Algorithm; geophysical model function; hurricane; marine atmosphere; measurement technique; meteorological radar; radar remote sensing; radar scatterometry; surface wind; tropical cyclone; tropical storm; typhoon; vector processing; wind retrieval algorithm; wind speed; Backscatter; Geophysical measurements; Hurricanes; NASA; Oceans; Radar measurements; Sea measurements; Sea surface; Typhoons; Wind speed;
Conference_Titel :
OCEANS '99 MTS/IEEE. Riding the Crest into the 21st Century
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-5628-4
DOI :
10.1109/OCEANS.1999.799770
