Evidence of coupling in ocean-atmosphere dynamics over the North Atlantic
Coupling between the ocean and the atmosphere is investigated in reanalysis data sets. Projecting the data sets onto a dynamically defined subspace allows one to isolate the dominant modes of variability of the coupled system. This coupled projection is then analyzed using multichannel singular spec...
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ftcdlib:oai:escholarship.org/ark:/13030/qt3rt1z476 2023-05-15T17:31:55+02:00 Evidence of coupling in ocean-atmosphere dynamics over the North Atlantic Vannitsem, S Ghil, M 2016 - 2026 2017-02-28 application/pdf https://escholarship.org/uc/item/3rt1z476 unknown eScholarship, University of California qt3rt1z476 https://escholarship.org/uc/item/3rt1z476 public Geophysical Research Letters, vol 44, iss 4 Meteorology & Atmospheric Sciences article 2017 ftcdlib 2021-04-16T07:11:00Z Coupling between the ocean and the atmosphere is investigated in reanalysis data sets. Projecting the data sets onto a dynamically defined subspace allows one to isolate the dominant modes of variability of the coupled system. This coupled projection is then analyzed using multichannel singular spectrum analysis. The results suggest that a dominant low-frequency signal with a 25–30year period already mentioned in the literature is a common mode of variability of the atmosphere and the ocean. A new score for evaluating the internal nature of the common variability is then introduced, and it confirms the presence of coupled dynamics in the ocean-atmosphere system that impacts the atmosphere at large scale. The physical nature of this coupled dynamics is then discussed. Article in Journal/Newspaper North Atlantic University of California: eScholarship |
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Open Polar |
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University of California: eScholarship |
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language |
unknown |
topic |
Meteorology & Atmospheric Sciences |
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Meteorology & Atmospheric Sciences Vannitsem, S Ghil, M Evidence of coupling in ocean-atmosphere dynamics over the North Atlantic |
topic_facet |
Meteorology & Atmospheric Sciences |
description |
Coupling between the ocean and the atmosphere is investigated in reanalysis data sets. Projecting the data sets onto a dynamically defined subspace allows one to isolate the dominant modes of variability of the coupled system. This coupled projection is then analyzed using multichannel singular spectrum analysis. The results suggest that a dominant low-frequency signal with a 25–30year period already mentioned in the literature is a common mode of variability of the atmosphere and the ocean. A new score for evaluating the internal nature of the common variability is then introduced, and it confirms the presence of coupled dynamics in the ocean-atmosphere system that impacts the atmosphere at large scale. The physical nature of this coupled dynamics is then discussed. |
format |
Article in Journal/Newspaper |
author |
Vannitsem, S Ghil, M |
author_facet |
Vannitsem, S Ghil, M |
author_sort |
Vannitsem, S |
title |
Evidence of coupling in ocean-atmosphere dynamics over the North Atlantic |
title_short |
Evidence of coupling in ocean-atmosphere dynamics over the North Atlantic |
title_full |
Evidence of coupling in ocean-atmosphere dynamics over the North Atlantic |
title_fullStr |
Evidence of coupling in ocean-atmosphere dynamics over the North Atlantic |
title_full_unstemmed |
Evidence of coupling in ocean-atmosphere dynamics over the North Atlantic |
title_sort |
evidence of coupling in ocean-atmosphere dynamics over the north atlantic |
publisher |
eScholarship, University of California |
publishDate |
2017 |
url |
https://escholarship.org/uc/item/3rt1z476 |
op_coverage |
2016 - 2026 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Geophysical Research Letters, vol 44, iss 4 |
op_relation |
qt3rt1z476 https://escholarship.org/uc/item/3rt1z476 |
op_rights |
public |
_version_ |
1766129802673127424 |