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Monitoring Sea Surface Salinity Variability Near South Greenland from Satellite and In Situ Observations
Bonjean, F.; Reverdin, G.; Kilian, L.; Boutin, J.; Guimbard, S.; Vergely, J.-L.; Foukal, N.; de Jong, M.F.; Stedmon, C.; Khvorostyanov, D. (2024). Monitoring Sea Surface Salinity Variability Near South Greenland from Satellite and In Situ Observations, in: IGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium. pp. 5847-5850. https://dx.doi.org/10.1109/igarss53475.2024.10642416
In: (2024). IGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium. [S.n.]: [s.l.]. ISBN 9798350360332. https://dx.doi.org/10.1109/IGARSS53475.2024, meer
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  • Bonjean, F.
  • Reverdin, G.
  • Kilian, L.
  • Boutin, J.
  • Guimbard, S.
  • Vergely, J.-L.
  • Foukal, N.
  • de Jong, M.F., meer
  • Stedmon, C.
  • Khvorostyanov, D.
Abstract
    Our study focuses on the variability of Sea Surface Salinity (SSS) near south Greenland. This is based on extensive in situ data gathered from a variety of sources, including Argo floats, CTD casts, thermosalinographs, and drifters, as well as the satellite-derived SSS product from the Climate Change Initiative (CCI). The CCI SSS effectively captures a significant portion of the salinity’s seasonal and interannual variability beyond 50km from the coast, outperforming SSS from individual satellite missions. The examination of a well-sampled fresh blob in fall 2021 suggests that satellite SSS is a valuable tool for studying freshwater transfer from the shelves to the deeper ocean, particularly during ice-free periods. However, we found positive biases in the CCI SSS on the shelves, highlighting the need for improved absolute calibration in these areas. For a more detailed study of SSS within 50km of the coast, a satellite SSS with a higher spatial resolution would be required.
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