One-Dimensional Variational Retrieval of the Wet Tropospheric Correction for Altimetry in Coastal Regions
Edited: 2011-02-18
| Title | One-Dimensional Variational Retrieval of the Wet Tropospheric Correction for Altimetry in Coastal Regions |
| Publication Type | Journal Article |
| Year of Publication | 2010 |
| Authors | Desportes, C., E. Obligis, and L. Eymard |
| Journal | IEEE Transactions on Geoscience and Remote Sensing |
| Volume | 48 |
| Issue | 3 |
| Pagination | 1001 |
| Date Published | 03/2010 |
| Keywords | jason, microwave_radiometer, sea_level |
| Abstract | The altimeter range is corrected for tropospheric humidity by means of microwave radiometer measurements (Envisat/MWR, Jason-1/JMR, Jason-2/AMR). Over an open ocean, the altimeter/radiometer combination is satisfactory. However, in coastal areas, radiometer measurements are contaminated by the surrounding land surfaces, and the humidity retrieval method is not appropriate anymore. In this paper, a variational assimilation technique is proposed to retrieve the wet tropospheric correction near coasts. The method is first developed on simulations using the data from a meteorological model. A performance assessment is performed, as well as a comparison with a standard algorithm. The method is then applied on actual measurements, thus evaluating its feasibility. |
| DOI | 10.1109/TGRS.2009.2031494 |