Demonstration of ocean surface salinity microwave measurements from space using AMSR-E data over the Amazon plume

Type Article
Date 2009-07
Language English
Author(s) Reul NicolasORCID1, Saux Picart Stephane1, Chapron Bertrand1, Vandemark D.2, Tournadre Jean1, Salisbury J.2
Affiliation(s) 1 : Inst Francais Rech Exploitat Mer, Lab Oceanog Spatiale, F-29820 Plouzane, France.
2 : Univ New Hampshire, Ocean Proc Anal Lab, Durham, NH 03824 USA.
Source Geophysical Research Letters ( GRL ) (0094-8276) (American Geophysical Union), 2009-07 , Vol. 36 , P. 1-5
DOI 10.1029/2009GL038860
WOS© Times Cited 22
Abstract Microwave Sea Surface Salinity (SSS) measurements can be performed by isolating the emissivity response to salinity changes from numerous geophysical effects, including surface temperature and wind waves. At L-band frequencies (1 to 2 GHz), the sensitivity to SSS is sufficient but it falls off quickly as frequency is increased. Nevertheless, methods using higher microwave frequencies with much lower SSS sensitivity than at L band, can already be tested. In particular, combining 6 and 10 GHz data in vertical polarization efficiently minimizes sea surface roughness and thermal impacts. Using AMSR-E data, the retrieved bi-monthly maps of SSS at 0.5 degrees resolution over the region of the Amazon plume show relative accuracy in-line with the future L-band dedicated mission objectives. Citation: Reul, N., S. Saux-Picart, B. Chapron, D. Vandemark, J. Tournadre, and J. Salisbury (2009), Demonstration of ocean surface salinity microwave measurements from space using AMSR-E data over the Amazon plume, Geophys. Res. Lett., 36, L13607, doi:10.1029/2009GL038860.
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Reul Nicolas, Saux Picart Stephane, Chapron Bertrand, Vandemark D., Tournadre Jean, Salisbury J. (2009). Demonstration of ocean surface salinity microwave measurements from space using AMSR-E data over the Amazon plume. Geophysical Research Letters ( GRL ), 36, 1-5. Publisher's official version : https://doi.org/10.1029/2009GL038860 , Open Access version : https://archimer.ifremer.fr/doc/00000/6620/