Correcting Sea Surface Temperature Spurious Effects in Salinity Retrieval
This study focuses on correcting spurious effects in sea surface temperature and salinity retrieval from spaceborne L-band Radiometer measurements. It discusses adjustments of permittivity models and introduces a new parametrization of dielectric constants. Validation using Aquarius data shows promising results.
Download Presentation
![](/assets/img/so-down.gif)
Please find below an Image/Link to download the presentation.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author. Download presentation by click this link. If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.
E N D
Presentation Transcript
Correcting sea surface temperature spurious effects in salinity retrieved from spaceborne L- band Radiometer measurements J. Boutin(1), J.L. Vergely(2), E. Dinnat(3), P. Waldteufel(4), Francesco D Amico(5) N. Reul(6) (5), (6), A. Supply(1) (1)and Clovis Thouvenin-Masson(1) (1) (6) (2) (5) (1) (4) (3)
Adjustment Adjustment of of permittivity permittivity model model Use SMOS retrieved pseudo-dielectric constant (ACARD) (Waldteufel et al. 2004) Adjust specific permittivity ( parameter) in Somaraju and Trumpf (ST) model at L-Band: ACARD SMOS ACARD KS ST value derived from fits of Ellison, MW 04, Stogryn97 models using in situ (Argo & ships) SST & SSS, after filtering and correction of conditionnal sampling effect, 5<WS<9m/s, =>
New BV New BV parametrization parametrization of of dielectric dielectric constant constant Modelled Tb Adjust specific permittivity ( parameter) in ST model at L-Band: New parametrization => close to KS at moderate SST, variation at low and high T parallel to Zhou at 35 and 33pss (absolute calibration is arbitrary) Boutin et al., 2020
Validation Validation using using Aquarius data Aquarius data KS MW MW BV-Liebe 92 BV-SMOS-Liebe 93 BV + SMOS-Liebe93+ SST cond. effect New BV dielectric constant => |SSSaq-SSSargo| <0.1 (and <0.05 between 5 and 25 C) similar results when applied in SMOS processing