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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Draper, D.W. Long, D.G. |
| Copyright Year | 2002 |
| Description | Author affiliation: Microwave Earth Remote Sensing Lab., Brigham Young Univ., Provo, UT, USA (Draper, D.W.; Long, D.G.) |
| Abstract | The normalized radar backscatter (/spl sigma//sup o/) in scatterometer measurements over water is theorized to go to zero below a threshold wind speed due to insufficient friction between the wind and water to create capillary waves from which the radar signal scatters. Evidence of the threshold wind speed and a hysteresis effect have been observed in airship and wave tank data. There is additional evidence for a threshold wind speed in tower-mounted scatterometer data in an uncontrolled marine environment. In situ wind measurements and corresponding /spl sigma//sup o/ values obtained from YSCAT, an ultra-wideband scatterometer deployed on the Canada Centre for Inland Waters research tower at Lake Ontario, are used to detect and estimate the threshold wind speed. There is evidence for a detectable threshold in approximately half of the observations. The observed threshold wind speeds correspond well to theoretical threshold wind speeds. |
| Sponsorship | IEEE IEEE Geosci. & Remote Sensing Soc. Canadian Remote Sensing Soc. Univ. Waterloo Natural Resources Canada (NRCan) Canadian Space Agency (CSA) Environ. Canada NASA Nat. Oceanic & Atmos. Adm. (NOAA) Office of Naval Res.(ONR) Nat. Space Dev. Agency of Japan (NASDA) Nat. Polar-orbiting Environ. Satellite Syst. (NPOESS) |
| Starting Page | 1977 |
| Ending Page | 1979 |
| File Size | 1122425 |
| Page Count | 3 |
| File Format | |
| ISBN | 078037536X |
| DOI | 10.1109/IGARSS.2002.1026418 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2002-06-24 |
| Publisher Place | Canada |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Wind speed Radar measurements Radar scattering Radar theory Velocity measurement Backscatter Friction Hysteresis Ultra wideband technology Poles and towers |
| Content Type | Text |
| Resource Type | Article |
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