NDLI: Improved Hurricane Ocean Vector Winds Using SeaWinds Active/Passive Retrievals

Content Provider	IEEE Xplore Digital Library
Author	Laupattarakasem, P. Jones, W.L. Hennon, C.C. Allard, J.R. Harless, A.R. Black, P.G.
Copyright Year	1980
Abstract	The SeaWinds scatterometer, onboard the QuikSCAT satellite, infers global ocean vector winds (OVWs); however, for a number of reasons, these measurements in hurricanes are significantly degraded. This paper presents an improved hurricane OVW retrieval approach, known as Q-Winds, which is derived from combined SeaWinds active and passive measurements. In this technique, the effects of rain are implicitly included in a new geophysical model function, which relates oceanic brightness temperature and radar backscatter measurements (at the top of the atmosphere) to the surface wind vector under both clear sky and in the presence of light to moderate rain. This approach extends the useful wind speed measurement range for tropical cyclones beyond that exhibited by the standard SeaWinds Project Level-2B (L2B) 12.5-km wind vector algorithm. A description of the Q-Winds algorithm is given, and examples of OVW retrievals are presented for the Q-Winds and L2B 12.5-km algorithms for ten hurricane overpasses in 2003-2008. These data are also compared to independent surface wind vector estimates from the National Oceanic and Atmospheric Administration Hurricane Research Division's objective hurricane surface wind analysis technique known as H*Wind. These comparisons suggest that the Q-Winds OVW product agrees better with independently derived H^ Wind analysis winds than does the conventional L2B OVW product.
Sponsorship	IEEE Geoscience and Remote Sensing Society IEEE URSI
Starting Page	2909
Ending Page	2923
Page Count	15
File Size	3433723
File Format	PDF
ISSN	01962892
Volume Number	48
Issue Number	7
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hurricanes Geophysical measurements Sea measurements Atmospheric measurements Sea surface Ocean temperature Radar measurements Rain Satellites Degradation SeaWinds H$^{\ast}$Wind hurricane retrieval ocean vector wind (OVW) retrieval QuikSCAT rain correction scatterometer
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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