NDLI: Wind retrievals under rain for passive satellite microwave radiometers and its application to hurricane tracking

Content Provider	IEEE Xplore Digital Library
Author	Meissner, T. Wentz, F.J.
Copyright Year	2008
Description	Author affiliation: Remote Sensing Syst., Santa Rosa, CA (Meissner, T.)
Abstract	We have developed an algorithm that retrieves wind speed under rain using C-band and X-band channels of passive microwave satellite radiometers. The spectral difference of the brightness temperature signals due to wind or rain allows to find channel combinations that are sufficiently sensitive to wind speed but little or not sensitive to rain. We have trained a statistical algorithm that applies under hurricane conditions and is able to measure wind speeds in hurricanes to an estimated accuracy of about 2 m/s. We have also developed a global algorithm, that is less accurate but can be applied under all conditions. Its estimated accuracy is between 2 and 5 m/s, depending on wind speed and rain rate. We also extend the wind speed region in our model for the wind induced sea surface emissivity from currently 20 m/s to 40 m/s. The data indicate that the signal starts to saturate above 30 m/s. Finally, we make an assessment of the performance of wind direction retrievals from polarimetric radiometers as function of wind speed and rain rate.
Starting Page	1
Ending Page	4
File Size	845579
Page Count	4
File Format	PDF
ISBN	9781424419869
DOI	10.1109/MICRAD.2008.4579492
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-03-11
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radiometers Sea surface Rain Ocean Wind Vector Wind speed Satellite broadcasting Sea measurements Hurricanes Brightness temperature Velocity measurement Ocean temperature Microwave Radiometers
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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