Ocean salinity from satellite-derived temperature in the Antarctic Ocean
International audience The aim of the MINERVE project (Mesures à l’INterface Eau-aiR de la Variabilité des Échanges de CO$_2$) is to observe and understand the seasonal and interannual variability of the partial pressure of CO$_2$ (pCO$_2$) in surface waters using hydrological and biogeochemical dat...
Published in: | Antarctic Science |
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Main Authors: | , , , , |
Other Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2016
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Subjects: | |
Online Access: | https://hal.science/hal-01497493 https://hal.science/hal-01497493/document https://hal.science/hal-01497493/file/59071.pdf https://doi.org/10.1017/s0954102015000516 |
Summary: | International audience The aim of the MINERVE project (Mesures à l’INterface Eau-aiR de la Variabilité des Échanges de CO$_2$) is to observe and understand the seasonal and interannual variability of the partial pressure of CO$_2$ (pCO$_2$) in surface waters using hydrological and biogeochemical data in the Southern Ocean south of Australia. Logistics routes of the RV Astrolabe provide access to scarcely studied areas, thus allowing us to understand the different processes acting in this area of the Antarctic Ocean. The surface area covered by these cruises, however, is tiny compared with the total surface area of the Antarctic Ocean. Correlations between in situ surface temperature and salinity data were applied to satellite images of sea surface temperature to map ocean surface salinity over a much wider area than under the cruise tracks. Comparisons with salinity data from satellites which provide ~100 km resolution and 0.1 accuracy indicate that we are able to map salinity at 4 km resolution and almost the same accuracy of ± 0.1. |
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