Paper Info
Title
A revised geophysical model function for the advanced scatterometer (ASCAT) at NOAA/NESDIS
Abstract
The current ASCAT winds retrieval is based on the CMOD5.n geophysical model function (GMF) with the ASCAT wind data processor developed at the Royal Netherlands Meteorological Institute (KNMI). Recent validation of ASCAT wind retrieval reveals that high wind retrievals were underestimated as being compared to the operational QuikSCAT scatterometer. The goal in this paper is to improve ASCAT wind retrievals at high winds. In this paper we map the radar backscatter (σ0) as a function of extreme wind conditions as measured by an airborne scatterometer and adjusted the isotropic term in CMOD5.n to follow the aircraft GMF trend. The geophysical model QuikSCAT wind inputs are improved for σ0 that calculated from QuikSCAT wind inputs are improved for σ0 approximately > -15 dB and in very good agreement with the ASCAT σ0 measurement. The wind retrieval validations show wind speed rms error is improved at approximately wind speed > 12 m/s and example mean wind composite from two winter seasons shows significant in detection of storm-force winds.
Year
DOI
Venue
2010
10.1109/IGARSS.2010.5650850
IGARSS
Keywords
Field
DocType
geophysical techniques,geophysical model function,radar cross-sections,ascat,radar backscatter,wind data processor,quikscat,high winds,airborne scatterometer,royal netherlands meteorological institute,ocean vector winds,advanced scatterometer,seasonality,wind speed
Meteorology,Spaceborne radar,Wind speed,Radar backscatter,Computer science,Remote sensing,Data processing system,Scatterometer,Geophysics
Conference
ISSN
ISBN
Citations 
2153-6996 E-ISBN : 978-1-4244-9564-1
978-1-4244-9564-1
0
PageRank 
References 
Authors
0.34
1
4
Name
Order
Citations
PageRank
Seubson Soisuvarn1337.98
Zorana Jelenak22712.59
Paul S. Chang32817.04
Qi Zhu4122.48