Atmosphere-ocean interaction in the North Atlantic: near sea surface climate variability
The impact of an interactive ocean on the midlatitude atmosphere is examined using a 31-yr integration of a variable depth mixed layer ocean model of the North Atlantic (between 208 and 608N) coupled to the NCAR Community Climate model (CCM1). Coupled model results are compared with a 31-yr control...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.547.2164 2023-05-15T17:29:00+02:00 Atmosphere-ocean interaction in the North Atlantic: near sea surface climate variability Uma S. Bhatt Michael A. Alexander David S. Battisti David D. Houghton Linda M. Keller The Pennsylvania State University CiteSeerX Archives 1998 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.547.2164 http://www2.gi.alaska.edu/~bhatt/publications/BABHK.JClim.07.98.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.547.2164 http://www2.gi.alaska.edu/~bhatt/publications/BABHK.JClim.07.98.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www2.gi.alaska.edu/~bhatt/publications/BABHK.JClim.07.98.pdf text 1998 ftciteseerx 2016-01-08T11:20:30Z The impact of an interactive ocean on the midlatitude atmosphere is examined using a 31-yr integration of a variable depth mixed layer ocean model of the North Atlantic (between 208 and 608N) coupled to the NCAR Community Climate model (CCM1). Coupled model results are compared with a 31-yr control simulation where the annual cycle of sea surface temperatures is prescribed. The analysis focuses on the northern fall and winter months. Coupling does not change the mean wintertime model climatology (December–February); however, it does have a significant impact on model variance. Air temperature and mixing ratio variance increase while total surface heat flux variance decreases. In addition, it is found that air–sea interaction has a greater impact on seasonally averaged variance than monthly variance. There is an enhancement in the persistence of air temperature anomalies on interannual timescales as a result of coupling. In the North Atlantic sector, surface air and ocean temperature anomalies during late winter are uncorrelated with the following summer but are significantly correlated (0.4–0.6) with anomalies during the following winter. These autocorrelations are consistent with the ‘‘re-emergence’ ’ mechanism, where late winter ocean temperature anomalies are sequestered beneath the shallow summer mixed layer and are reincorporated into the deepening fall mixed layer. The elimination of temperature anomalies from below the mixed layer in Text North Atlantic Unknown |
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English |
description |
The impact of an interactive ocean on the midlatitude atmosphere is examined using a 31-yr integration of a variable depth mixed layer ocean model of the North Atlantic (between 208 and 608N) coupled to the NCAR Community Climate model (CCM1). Coupled model results are compared with a 31-yr control simulation where the annual cycle of sea surface temperatures is prescribed. The analysis focuses on the northern fall and winter months. Coupling does not change the mean wintertime model climatology (December–February); however, it does have a significant impact on model variance. Air temperature and mixing ratio variance increase while total surface heat flux variance decreases. In addition, it is found that air–sea interaction has a greater impact on seasonally averaged variance than monthly variance. There is an enhancement in the persistence of air temperature anomalies on interannual timescales as a result of coupling. In the North Atlantic sector, surface air and ocean temperature anomalies during late winter are uncorrelated with the following summer but are significantly correlated (0.4–0.6) with anomalies during the following winter. These autocorrelations are consistent with the ‘‘re-emergence’ ’ mechanism, where late winter ocean temperature anomalies are sequestered beneath the shallow summer mixed layer and are reincorporated into the deepening fall mixed layer. The elimination of temperature anomalies from below the mixed layer in |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Uma S. Bhatt Michael A. Alexander David S. Battisti David D. Houghton Linda M. Keller |
spellingShingle |
Uma S. Bhatt Michael A. Alexander David S. Battisti David D. Houghton Linda M. Keller Atmosphere-ocean interaction in the North Atlantic: near sea surface climate variability |
author_facet |
Uma S. Bhatt Michael A. Alexander David S. Battisti David D. Houghton Linda M. Keller |
author_sort |
Uma S. Bhatt |
title |
Atmosphere-ocean interaction in the North Atlantic: near sea surface climate variability |
title_short |
Atmosphere-ocean interaction in the North Atlantic: near sea surface climate variability |
title_full |
Atmosphere-ocean interaction in the North Atlantic: near sea surface climate variability |
title_fullStr |
Atmosphere-ocean interaction in the North Atlantic: near sea surface climate variability |
title_full_unstemmed |
Atmosphere-ocean interaction in the North Atlantic: near sea surface climate variability |
title_sort |
atmosphere-ocean interaction in the north atlantic: near sea surface climate variability |
publishDate |
1998 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.547.2164 http://www2.gi.alaska.edu/~bhatt/publications/BABHK.JClim.07.98.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
http://www2.gi.alaska.edu/~bhatt/publications/BABHK.JClim.07.98.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.547.2164 http://www2.gi.alaska.edu/~bhatt/publications/BABHK.JClim.07.98.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766122304428834816 |