Normal modes in North Atlantic atmosphere-ocean system and predicting North Atlantic sea surface temperature
We identify an interdecadal oscillatory mode of the North Atlantic atmosphere-ocean system via a Linear Inverse Model (LIM). This mode is shown to be related to the interior pathway propagation of Atlantic Meridional Overturning Circulation (AMOC) anomalies. The oscillation is an ocean-only mode whi...
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ftdatacite:10.26053/0h-f26a-4tg0 2023-05-15T17:25:39+02:00 Normal modes in North Atlantic atmosphere-ocean system and predicting North Atlantic sea surface temperature Zhao, Bowen 2016 application/pdf https://dx.doi.org/10.26053/0h-f26a-4tg0 https://collections.lib.utah.edu/ark:/87278/s67w9mjp en eng University of Utah General circulation modes Normal modes North Atlantic atmosphere-ocean system Ocean dynamics Sea surface temperature article-journal Text ScholarlyArticle 2016 ftdatacite https://doi.org/10.26053/0h-f26a-4tg0 2021-11-05T12:55:41Z We identify an interdecadal oscillatory mode of the North Atlantic atmosphere-ocean system via a Linear Inverse Model (LIM). This mode is shown to be related to the interior pathway propagation of Atlantic Meridional Overturning Circulation (AMOC) anomalies. The oscillation is an ocean-only mode while excited by atmospheric forcing; in particular, it can be approximated as a linearly driven damped oscillator while the North Atlantic Oscillation (NAO) acts as part of the ''external" force. We also show that the influence of NAO-induced surface wind stress forcing quickly damps while the NAO-induced deep flow anomaly, integrating with ocean topography, plays a crucial role in this interdecadal mode. Including such deep ocean dynamics besides surface temperature (SST) significantly improves and prolongs the LIM's prediction skill of SST evolution. Text North Atlantic North Atlantic oscillation DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
General circulation modes Normal modes North Atlantic atmosphere-ocean system Ocean dynamics Sea surface temperature |
spellingShingle |
General circulation modes Normal modes North Atlantic atmosphere-ocean system Ocean dynamics Sea surface temperature Zhao, Bowen Normal modes in North Atlantic atmosphere-ocean system and predicting North Atlantic sea surface temperature |
topic_facet |
General circulation modes Normal modes North Atlantic atmosphere-ocean system Ocean dynamics Sea surface temperature |
description |
We identify an interdecadal oscillatory mode of the North Atlantic atmosphere-ocean system via a Linear Inverse Model (LIM). This mode is shown to be related to the interior pathway propagation of Atlantic Meridional Overturning Circulation (AMOC) anomalies. The oscillation is an ocean-only mode while excited by atmospheric forcing; in particular, it can be approximated as a linearly driven damped oscillator while the North Atlantic Oscillation (NAO) acts as part of the ''external" force. We also show that the influence of NAO-induced surface wind stress forcing quickly damps while the NAO-induced deep flow anomaly, integrating with ocean topography, plays a crucial role in this interdecadal mode. Including such deep ocean dynamics besides surface temperature (SST) significantly improves and prolongs the LIM's prediction skill of SST evolution. |
format |
Text |
author |
Zhao, Bowen |
author_facet |
Zhao, Bowen |
author_sort |
Zhao, Bowen |
title |
Normal modes in North Atlantic atmosphere-ocean system and predicting North Atlantic sea surface temperature |
title_short |
Normal modes in North Atlantic atmosphere-ocean system and predicting North Atlantic sea surface temperature |
title_full |
Normal modes in North Atlantic atmosphere-ocean system and predicting North Atlantic sea surface temperature |
title_fullStr |
Normal modes in North Atlantic atmosphere-ocean system and predicting North Atlantic sea surface temperature |
title_full_unstemmed |
Normal modes in North Atlantic atmosphere-ocean system and predicting North Atlantic sea surface temperature |
title_sort |
normal modes in north atlantic atmosphere-ocean system and predicting north atlantic sea surface temperature |
publisher |
University of Utah |
publishDate |
2016 |
url |
https://dx.doi.org/10.26053/0h-f26a-4tg0 https://collections.lib.utah.edu/ark:/87278/s67w9mjp |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_doi |
https://doi.org/10.26053/0h-f26a-4tg0 |
_version_ |
1766117132729319424 |