An active role of extratropical sea surface temperature anomalies in determining anomalous turbulent heat flux
Temporal and spatial structures of turbulent latent and sensible heat flux anomalies are examined in relation to dominant patterns of sea surface temperature anomalies (SSTA) observed over the North Pacific. Relative importance among observed anomalies in SST, surface air temperature, and wind speed...
Published in: | Journal of Geophysical Research |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Geophysical Union
|
Subjects: | |
Online Access: | http://hdl.handle.net/2115/14619 https://doi.org/10.1029/2002JC001750 |
id |
fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/14619 |
---|---|
record_format |
openpolar |
spelling |
fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/14619 2023-05-15T18:28:32+02:00 An active role of extratropical sea surface temperature anomalies in determining anomalous turbulent heat flux Tanimoto, Youichi Nakamura, Hisashi Kagimoto, Takashi Yamane, Shozo http://hdl.handle.net/2115/14619 https://doi.org/10.1029/2002JC001750 eng eng American Geophysical Union http://hdl.handle.net/2115/14619 Journal of Geophysical Research, 108(c10): 3304 http://dx.doi.org/10.1029/2002JC001750 An edited version of this paper was published by AGU. Copyright 2003 American Geophysical Union. sea surface temperature ocean-to-atmosphere effect air-sea interaction decadal variability subpolar frontal zone 451.8 article fthokunivhus https://doi.org/10.1029/2002JC001750 2022-11-18T01:01:17Z Temporal and spatial structures of turbulent latent and sensible heat flux anomalies are examined in relation to dominant patterns of sea surface temperature anomalies (SSTA) observed over the North Pacific. Relative importance among observed anomalies in SST, surface air temperature, and wind speed in determining the anomalous turbulent heat fluxes is assessed through linearizing the observed flux anomalies. Over the central basin of the North Pacific, changes in the atmospheric variables, including air temperature and wind speed, are primarily responsible for the generation of local SST variations by changing turbulent heat flux, which supports a conventional view of extratropical air-sea interaction. In the region where ocean dynamics is very important in forming SSTAs, in contrast, SSTAs that have been formed in early winter play the primary role in determining mid- and late-winter turbulent heat flux anomalies, indicative of the SST forcing upon the overlying atmosphere. Specifically, both decadal scale SSTAs in the western Pacific subarctic frontal zone and El Niño related SSTAs south of Japan are found to be engaged actively in such forcing on the atmosphere. The atmospheric response to this forcing appears to include the anomalous storm track activity. The observed atmospheric anomalies, which may be, in part, forced by the preexisting SSTAs in those two regions, act to force SSTAs in other portions of the basin, leading to the time evolution of SSTAs as observed in the course of the winter season. Article in Journal/Newspaper Subarctic Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Pacific Journal of Geophysical Research 108 C10 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
sea surface temperature ocean-to-atmosphere effect air-sea interaction decadal variability subpolar frontal zone 451.8 |
spellingShingle |
sea surface temperature ocean-to-atmosphere effect air-sea interaction decadal variability subpolar frontal zone 451.8 Tanimoto, Youichi Nakamura, Hisashi Kagimoto, Takashi Yamane, Shozo An active role of extratropical sea surface temperature anomalies in determining anomalous turbulent heat flux |
topic_facet |
sea surface temperature ocean-to-atmosphere effect air-sea interaction decadal variability subpolar frontal zone 451.8 |
description |
Temporal and spatial structures of turbulent latent and sensible heat flux anomalies are examined in relation to dominant patterns of sea surface temperature anomalies (SSTA) observed over the North Pacific. Relative importance among observed anomalies in SST, surface air temperature, and wind speed in determining the anomalous turbulent heat fluxes is assessed through linearizing the observed flux anomalies. Over the central basin of the North Pacific, changes in the atmospheric variables, including air temperature and wind speed, are primarily responsible for the generation of local SST variations by changing turbulent heat flux, which supports a conventional view of extratropical air-sea interaction. In the region where ocean dynamics is very important in forming SSTAs, in contrast, SSTAs that have been formed in early winter play the primary role in determining mid- and late-winter turbulent heat flux anomalies, indicative of the SST forcing upon the overlying atmosphere. Specifically, both decadal scale SSTAs in the western Pacific subarctic frontal zone and El Niño related SSTAs south of Japan are found to be engaged actively in such forcing on the atmosphere. The atmospheric response to this forcing appears to include the anomalous storm track activity. The observed atmospheric anomalies, which may be, in part, forced by the preexisting SSTAs in those two regions, act to force SSTAs in other portions of the basin, leading to the time evolution of SSTAs as observed in the course of the winter season. |
format |
Article in Journal/Newspaper |
author |
Tanimoto, Youichi Nakamura, Hisashi Kagimoto, Takashi Yamane, Shozo |
author_facet |
Tanimoto, Youichi Nakamura, Hisashi Kagimoto, Takashi Yamane, Shozo |
author_sort |
Tanimoto, Youichi |
title |
An active role of extratropical sea surface temperature anomalies in determining anomalous turbulent heat flux |
title_short |
An active role of extratropical sea surface temperature anomalies in determining anomalous turbulent heat flux |
title_full |
An active role of extratropical sea surface temperature anomalies in determining anomalous turbulent heat flux |
title_fullStr |
An active role of extratropical sea surface temperature anomalies in determining anomalous turbulent heat flux |
title_full_unstemmed |
An active role of extratropical sea surface temperature anomalies in determining anomalous turbulent heat flux |
title_sort |
active role of extratropical sea surface temperature anomalies in determining anomalous turbulent heat flux |
publisher |
American Geophysical Union |
url |
http://hdl.handle.net/2115/14619 https://doi.org/10.1029/2002JC001750 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Subarctic |
genre_facet |
Subarctic |
op_relation |
http://hdl.handle.net/2115/14619 Journal of Geophysical Research, 108(c10): 3304 http://dx.doi.org/10.1029/2002JC001750 |
op_rights |
An edited version of this paper was published by AGU. Copyright 2003 American Geophysical Union. |
op_doi |
https://doi.org/10.1029/2002JC001750 |
container_title |
Journal of Geophysical Research |
container_volume |
108 |
container_issue |
C10 |
_version_ |
1766211046780960768 |