|
|
|
|
|
| Yin, Xiaobin; Boutin, Jacqueline; Martin, Nicolas; Spurgeon, Paul; Vergely, Jean-luc; Gaillard, Fabienne. |
| The wind speed (WS) provided by the European Centre for Medium-Range Weather Forecasts (ECMWF) is used to initialize the retrieval process of WS and Sea Surface Salinity (SSS) obtained by the Soil Moisture and Ocean Salinity (SMOS) mission. This process compensates for the lack of onboard instrument providing a measure of ocean surface WS independent of the L-band radiometer measurements. The SMOS-retrieved WS in the center of the swath (± 300 km) is adjusted regarding to its a priori estimate. The quality of the SMOS-retrieved SSS (SSSSMOS) is better at the center of the swath than at the edge of the swatch because the larger number of brightness temperature measurements available at the center of the swath reduces the effects of noise and because the... |
| Tipo: Text |
Palavras-chave: SMOS; SSMIS; ECMWF; Wind speed; Salinity. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00158/26970/25261.pdf |
| |
|
|
| Boutin, Jacqueline; Vergely, Jean-luc; Dinnat, Emmanuel P.; Waldteufel, Philippe; D'Amico, Francesco; Reul, Nicolas; Supply, Alexandre; Thouvenin-masson, Clovis. |
| Earlier studies have pointed out systematic differences between sea surface salinity retrieved from L-band radiometric measurements and measured in situ, which depend on sea surface temperature (SST). We investigate how to cope with these differences given existing physically based radiative transfer models. In order to study differences coming from seawater dielectric constant parametrization, we consider the model of Somaraju and Trumpf (2006) (ST) which is built on sound physical bases and close to a single relaxation term Debye equation. While ST model uses fewer empirically adjusted parameters than other dielectric constant models currently used in salinity retrievals, ST dielectric constants are found close to those obtained using the Meissner and... |
| Tipo: Text |
Palavras-chave: Dielectric constant; L-band microwave radiometry; Sea surface salinity (SSS).. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00657/76943/78203.pdf |
| |
|
|
|
