Arctic Ocean Circulation Patterns Revealed by GRACE
Measurements of ocean bottom pressure (OBP) anomalies from the satellitemissionGravity Recovery and Climate Experiment (GRACE), complemented by information from two ocean models, are used to in-vestigate the variations and distribution of the Arctic Ocean mass from 2002 through 2011. The forcing and...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.649.467 2023-05-15T14:41:25+02:00 Arctic Ocean Circulation Patterns Revealed by GRACE Cecilia Peralta-ferriz James H. Morison John M. Wallace Jennifer A. Bonin Jinlun Zhang The Pennsylvania State University CiteSeerX Archives 2012 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.649.467 http://psc.apl.washington.edu/zhang/Pubs/PeraltaFerrizetal2014JCLI.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.649.467 http://psc.apl.washington.edu/zhang/Pubs/PeraltaFerrizetal2014JCLI.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://psc.apl.washington.edu/zhang/Pubs/PeraltaFerrizetal2014JCLI.pdf text 2012 ftciteseerx 2016-01-08T16:17:17Z Measurements of ocean bottom pressure (OBP) anomalies from the satellitemissionGravity Recovery and Climate Experiment (GRACE), complemented by information from two ocean models, are used to in-vestigate the variations and distribution of the Arctic Ocean mass from 2002 through 2011. The forcing and dynamics associated with the observed OBP changes are explored. Major findings are the identification of three primary temporal–spatial modes of OBP variability at monthly-to-interannual time scales with the following characteristics. Mode 1 (50 % of the variance) is a wintertime basin-coherent Arctic mass change forced by southerly winds through Fram Strait, and to a lesser extent through Bering Strait. These winds generate northward geostrophic current anomalies that increase the mass in the Arctic Ocean. Mode 2 (20%) reveals a mass change along the Siberian shelves, driven by surface Ekman transport and associated with the Arctic Oscillation. Mode 3 (10%) reveals a mass dipole, with mass decreasing in the Chukchi, East Siberian, and Laptev Seas, andmass increasing in the Barents andKara Seas. During the summer, themass decrease on the East Siberian shelves is due to the basin-scale anticyclonic atmospheric circulation that removes mass from the shelves via Ekman transport. During the winter, the forcing mechanisms include a large-scale cy-clonic atmospheric circulation in the eastern-central Arctic that produces mass divergence into the Canada Basin and theBarents Sea. In addition, strengthening of theBeaufort high tends to removemass from theEast Siberian and Chukchi Seas. Supporting previous modeling results, the month-to-month variability in OBP associated with each mode is predominantly of barotropic character. 1. Text Arctic Arctic Ocean Bering Strait canada basin Central Arctic Chukchi Fram Strait laptev Unknown Arctic Arctic Ocean Bering Strait Canada |
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ftciteseerx |
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English |
description |
Measurements of ocean bottom pressure (OBP) anomalies from the satellitemissionGravity Recovery and Climate Experiment (GRACE), complemented by information from two ocean models, are used to in-vestigate the variations and distribution of the Arctic Ocean mass from 2002 through 2011. The forcing and dynamics associated with the observed OBP changes are explored. Major findings are the identification of three primary temporal–spatial modes of OBP variability at monthly-to-interannual time scales with the following characteristics. Mode 1 (50 % of the variance) is a wintertime basin-coherent Arctic mass change forced by southerly winds through Fram Strait, and to a lesser extent through Bering Strait. These winds generate northward geostrophic current anomalies that increase the mass in the Arctic Ocean. Mode 2 (20%) reveals a mass change along the Siberian shelves, driven by surface Ekman transport and associated with the Arctic Oscillation. Mode 3 (10%) reveals a mass dipole, with mass decreasing in the Chukchi, East Siberian, and Laptev Seas, andmass increasing in the Barents andKara Seas. During the summer, themass decrease on the East Siberian shelves is due to the basin-scale anticyclonic atmospheric circulation that removes mass from the shelves via Ekman transport. During the winter, the forcing mechanisms include a large-scale cy-clonic atmospheric circulation in the eastern-central Arctic that produces mass divergence into the Canada Basin and theBarents Sea. In addition, strengthening of theBeaufort high tends to removemass from theEast Siberian and Chukchi Seas. Supporting previous modeling results, the month-to-month variability in OBP associated with each mode is predominantly of barotropic character. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Cecilia Peralta-ferriz James H. Morison John M. Wallace Jennifer A. Bonin Jinlun Zhang |
spellingShingle |
Cecilia Peralta-ferriz James H. Morison John M. Wallace Jennifer A. Bonin Jinlun Zhang Arctic Ocean Circulation Patterns Revealed by GRACE |
author_facet |
Cecilia Peralta-ferriz James H. Morison John M. Wallace Jennifer A. Bonin Jinlun Zhang |
author_sort |
Cecilia Peralta-ferriz |
title |
Arctic Ocean Circulation Patterns Revealed by GRACE |
title_short |
Arctic Ocean Circulation Patterns Revealed by GRACE |
title_full |
Arctic Ocean Circulation Patterns Revealed by GRACE |
title_fullStr |
Arctic Ocean Circulation Patterns Revealed by GRACE |
title_full_unstemmed |
Arctic Ocean Circulation Patterns Revealed by GRACE |
title_sort |
arctic ocean circulation patterns revealed by grace |
publishDate |
2012 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.649.467 http://psc.apl.washington.edu/zhang/Pubs/PeraltaFerrizetal2014JCLI.pdf |
geographic |
Arctic Arctic Ocean Bering Strait Canada |
geographic_facet |
Arctic Arctic Ocean Bering Strait Canada |
genre |
Arctic Arctic Ocean Bering Strait canada basin Central Arctic Chukchi Fram Strait laptev |
genre_facet |
Arctic Arctic Ocean Bering Strait canada basin Central Arctic Chukchi Fram Strait laptev |
op_source |
http://psc.apl.washington.edu/zhang/Pubs/PeraltaFerrizetal2014JCLI.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.649.467 http://psc.apl.washington.edu/zhang/Pubs/PeraltaFerrizetal2014JCLI.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766313197824901120 |