Abstract
A theoretical model function for the normalized radar backscattering cross section (NRCS) of the ocean surface used in a wind retrieval algorithm using NSCAT data is presented. The model is based on the two scale roughness model proposed by Valenzuela [1978]. The NRCS varies with both wind speed and direction when measured at moderate incidence angles. Dependence of the NRCS and wind field is incorporated into the model via an ocean wavenumber spectrum. We have tested performance of the model using four ocean wave spectra proposed in the literature: Donelan and Pierson [1987], Elfouhaily et al [1997], Apel [1994] and Romeiser et al [1997]. We have found that the overall performance of all four spectra is within rms experimental error for VV polarization. The mathematical complexity of the models proved to be of great importance in the computational calculation.
| Original language | English |
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| Pages | 1640-1642 |
| Number of pages | 3 |
| State | Published - 1999 |
| Event | Proceedings of the 1999 IEEE International Geoscience and Remote Sensing Symposium (IGARSS'99) 'Remote Sensing of the Systems Earth - A Challenge for the 21st Century' - Hamburg, Ger Duration: Jun 28 1999 → Jul 2 1999 |
Conference
| Conference | Proceedings of the 1999 IEEE International Geoscience and Remote Sensing Symposium (IGARSS'99) 'Remote Sensing of the Systems Earth - A Challenge for the 21st Century' |
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| City | Hamburg, Ger |
| Period | 06/28/99 → 07/2/99 |