Normal modes in North Atlantic atmosphere-ocean system and predicting North Atlantic sea surface temperature
thesis 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 m...
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ftunivutah:oai:collections.lib.utah.edu:ir_etd/197826 2023-05-15T17:25:39+02:00 Normal modes in North Atlantic atmosphere-ocean system and predicting North Atlantic sea surface temperature Master of Science Zhao, Bowen College of Mines & Earth Sciences Atmospheric Sciences 2016 application/pdf 3,108,415 bytes https://collections.lib.utah.edu/ark:/87278/s67w9mjp eng eng University of Utah etd3/id/4281 https://collections.lib.utah.edu/ark:/87278/s67w9mjp ©Bowen Zhao General circulation modes Normal modes North Atlantic atmosphere-ocean system Ocean dynamics Sea surface temperature Text 2016 ftunivutah 2021-06-03T18:20:44Z thesis 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 The University of Utah: J. Willard Marriott Digital Library |
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Open Polar |
collection |
The University of Utah: J. Willard Marriott Digital Library |
op_collection_id |
ftunivutah |
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 |
thesis 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. |
author2 |
College of Mines & Earth Sciences Atmospheric Sciences |
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://collections.lib.utah.edu/ark:/87278/s67w9mjp |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
etd3/id/4281 https://collections.lib.utah.edu/ark:/87278/s67w9mjp |
op_rights |
©Bowen Zhao |
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1766117137560109056 |