Title

Improved Hurricane Wind Speed Algorithm For The Seawinds Satellite Scatterometer

Abstract

Satellite microwave scatterometer wind retrievals, given in the standard product (e.g., QuikSCAT L2B), badly underestimate the peak wind speed in tropical cyclones. One important reason is that the effects of precipitation on the normalized radar cross section sigma-0 are neglected in the processing algorithms. This paper presents results of a first attempt to provide sigma-0 corrections, which account for the atmospheric attenuation of the rain. Atmospheric transmissivity is derived from the QuikSCAT Radiometer (QRAD) excess brightness temperatures taken simultaneously with sigma-0 measurements. When applied, retrieved wind speeds show improved agreement with numerical hurricane models (PSU/NCAR MM5) where there is moderate to high rainfall.

Publication Date

12-1-2002

Publication Title

Oceans Conference Record (IEEE)

Volume

4

Number of Pages

1973-1980

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

0037631088 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0037631088

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