Monitoring open-ocean deep convection from space

Deep convection (DC) is a key‐process of the oceanic circulation, costly to monitor in situ and under the influence of climate change. Our study is a first step toward monitoring DC from space: we investigate the feasibility of observing its variability using improved satellite altimetry. An oceanic...

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Bibliographic Details
Published in:Geophysical research letters 2009-02, Vol.36 (3), p.L03606-n/a
Main Authors: Herrmann, Marine, Bouffard, Jérome, Béranger, Karine
Format: Article
Language:English
Subjects:
Climate and interannual variability
Earth Sciences
Earth, ocean, space
Exact sciences and technology
Hydrodynamic modeling
improved altimetry
Mediterranean Sea
Ocean observing systems
Oceanography
open-ocean deep convection
Physical
Physical oceanography
Remote sensing
Remote sensing and electromagnetic processes
Sciences of the Universe
Water masses
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Summary:Deep convection (DC) is a key‐process of the oceanic circulation, costly to monitor in situ and under the influence of climate change. Our study is a first step toward monitoring DC from space: we investigate the feasibility of observing its variability using improved satellite altimetry. An oceanic simulation of the Mediterranean circulation was performed for the 1999–2007 period. DC interannual variability is realistically modelled, and the sea surface elevation (SSE) is in agreement with altimetry data. Numerical results show a strong correlation between the annual DC characteristics and the winter SSE. From that, we propose a method to monitor DC interannual variability and long term evolution using altimetry data. Our method, applied to the longest available altimetry series, represents correctly the interannual variability of DC in the Northwestern Mediterranean between 1994 and 2007.
ISSN:0094-8276
1944-8007
DOI:10.1029/2008GL036422