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| Hernandez, Olga; Boutin, Jacqueline; Kolodziejczyk, Nicolas; Reverdin, Gilles; Martin, Nicolas; Gaillard, Fabienne; Reul, Nicolas; Vergely, J. L.. |
| Sea surface salinity (SSS) measured from space by the Soil Moisture and Ocean Salinity (SMOS) mission is validated in the subtropical North Atlantic Ocean. 39 transects of ships of opportunity equipped with thermosalinographs (TSG) crossed that region from 2010 to 2012, providing a large database of ground truth SSS. SMOS SSS is also compared to Aquarius SSS. Large seasonal biases remain in SMOS and Aquarius SSS. In order to look at the capability of satellite SSS to monitor spatial variability, especially at scales less than 300 km (not monitored with the Argo network), we first apply a monthly bias correction derived from satellite SSS and In Situ Analysis System (ISAS) SSS differences averaged over the studied region. Ship SSS averaged over 25 km is... |
| Tipo: Text |
Palavras-chave: SMOS; Salinity; Remote sensing; Subtropical North Atlantic. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00210/32150/34082.pdf |
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| Boutin, J.; Vergely, J. L.; Marchand, S.; D'Amico, F; Hasson, A.; Kolodziejczyk, Nicolas; Reul, Nicolas; Reverdin, G.; Vialard, J.. |
| Salinity observing satellites have the potential to monitor river fresh-water plumes mesoscale spatio-temporal variations better than any other observing system. In the case of the Soil Moisture and Ocean Salinity (SMOS) satellite mission, this capacity was hampered due to the contamination of SMOS data processing by strong land-sea emissivity contrasts. Kolodziejczyk et al. (2016) (hereafter K2016) developed a methodology to mitigate SMOS systematic errors in the vicinity of continents, that greatly improved the quality of the SMOS Sea Surface Salinity (SSS). Here, we find that SSS variability, however, often remained underestimated, such as near major river mouths. We revise the K2016 methodology with: a) a less stringent filtering of measurements in... |
| Tipo: Text |
Palavras-chave: SMOS; Sea Surface Salinity; SMAP. |
| Ano: 2018 |
URL: http://archimer.ifremer.fr/doc/00441/55254/56819.pdf |
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