Estimation of the surface heat flux response to sea surface temperature anomalies over the global oceans
The surface heat flux response to underlying sea surface temperature (SST) anomalies (the surface heat flux feedback) is estimated using 42 yr (1956-97) of ship-derived monthly turbulent heat fluxes and 17 yr (1984-2000) of satellite-derived monthly radiative fluxes over the global oceans for indivi...
Published in: | Journal of Climate |
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Language: | English |
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American Meteorological Society
2005
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Online Access: | http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-005-383 https://doi.org/10.1175/JCLI3521.1 |
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ftncar:oai:drupal-site.org:articles_7589 2023-10-01T03:57:57+02:00 Estimation of the surface heat flux response to sea surface temperature anomalies over the global oceans Park, S. (author) Deser, Clara (author) Alexander, M. (author) 2005-11-01 application/pdf http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-005-383 https://doi.org/10.1175/JCLI3521.1 en eng American Meteorological Society Journal of Climate http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-005-383 doi:10.1175/JCLI3521.1 ark:/85065/d7v1254v Copyright 2005 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be "fair use" under Section 107 or that satisfies the conditions specified in Section 108 of the U.S. Copyright Law (17 USC, as revised by P.L. 94-553) does not require the Society's permission. Republication, systematic reproduction, posting in electronic form on servers, or other uses of this material, except as exempted by the above statements, requires written permission or license from the AMS. Additional details are provided in the AMS Copyright Policies, available from the AMS at 617-227-2425 or amspubs@ametsoc.org. Permission to place a copy of this work on this server has been provided by the AMS. The AMS does not guarantee that the copy provided here is an accurate copy of the published work. Text article 2005 ftncar https://doi.org/10.1175/JCLI3521.1 2023-09-04T18:28:11Z The surface heat flux response to underlying sea surface temperature (SST) anomalies (the surface heat flux feedback) is estimated using 42 yr (1956-97) of ship-derived monthly turbulent heat fluxes and 17 yr (1984-2000) of satellite-derived monthly radiative fluxes over the global oceans for individual seasons. Net surface heat flux feedback is generally negative (i.e., a damping of the underlying SST anomalies) over the global oceans, although there is considerable geographical and seasonal variation. Over the North Pacific Ocean, net surface heat flux feedback is dominated by the turbulent flux component, with maximum values (28 W m(-2)K(-1)) in December-February and minimum values (5 W m(-2)K(-1)) in May-July. These seasonal variations are due to changes in the strength of the climatological mean surface wind speed and the degree to which the near-surface air temperature and humidity adjust to the underlying SST anomalies. Similar features are observed over the extratropical North Atlantic Ocean with maximum (minimum) feedback values of approximately 33 W m(-2)K(-1) (9 W m(-2)K(-1)) in December-February (June-August). Although the net surface heat flux feedback may be negative, individual components of the feedback can be positive depending on season and location. For example, over the midlatitude North Pacific Ocean during late spring to midsummer, the radiative flux feedback associated with marine boundary layer clouds and fog is positive, and results in a significant enhancement of the month-to-month persistence of SST anomalies, nearly doubling the SST anomaly decay time from 2.8 to 5.3 months in May-July.', Several regions are identified with net positive heat flux feedback: the tropical western North Atlantic Ocean during boreal winter, the Namibian stratocumulus deck off West Africa during boreal fall, and the Indian Ocean during boreal summer and fall. These positive feedbacks are mainly associated with the following atmospheric responses to positive SST anomalies: 1) reduced surface wind speed ... Article in Journal/Newspaper North Atlantic OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Indian Pacific Journal of Climate 18 21 4582 4599 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
The surface heat flux response to underlying sea surface temperature (SST) anomalies (the surface heat flux feedback) is estimated using 42 yr (1956-97) of ship-derived monthly turbulent heat fluxes and 17 yr (1984-2000) of satellite-derived monthly radiative fluxes over the global oceans for individual seasons. Net surface heat flux feedback is generally negative (i.e., a damping of the underlying SST anomalies) over the global oceans, although there is considerable geographical and seasonal variation. Over the North Pacific Ocean, net surface heat flux feedback is dominated by the turbulent flux component, with maximum values (28 W m(-2)K(-1)) in December-February and minimum values (5 W m(-2)K(-1)) in May-July. These seasonal variations are due to changes in the strength of the climatological mean surface wind speed and the degree to which the near-surface air temperature and humidity adjust to the underlying SST anomalies. Similar features are observed over the extratropical North Atlantic Ocean with maximum (minimum) feedback values of approximately 33 W m(-2)K(-1) (9 W m(-2)K(-1)) in December-February (June-August). Although the net surface heat flux feedback may be negative, individual components of the feedback can be positive depending on season and location. For example, over the midlatitude North Pacific Ocean during late spring to midsummer, the radiative flux feedback associated with marine boundary layer clouds and fog is positive, and results in a significant enhancement of the month-to-month persistence of SST anomalies, nearly doubling the SST anomaly decay time from 2.8 to 5.3 months in May-July.', Several regions are identified with net positive heat flux feedback: the tropical western North Atlantic Ocean during boreal winter, the Namibian stratocumulus deck off West Africa during boreal fall, and the Indian Ocean during boreal summer and fall. These positive feedbacks are mainly associated with the following atmospheric responses to positive SST anomalies: 1) reduced surface wind speed ... |
author2 |
Park, S. (author) Deser, Clara (author) Alexander, M. (author) |
format |
Article in Journal/Newspaper |
title |
Estimation of the surface heat flux response to sea surface temperature anomalies over the global oceans |
spellingShingle |
Estimation of the surface heat flux response to sea surface temperature anomalies over the global oceans |
title_short |
Estimation of the surface heat flux response to sea surface temperature anomalies over the global oceans |
title_full |
Estimation of the surface heat flux response to sea surface temperature anomalies over the global oceans |
title_fullStr |
Estimation of the surface heat flux response to sea surface temperature anomalies over the global oceans |
title_full_unstemmed |
Estimation of the surface heat flux response to sea surface temperature anomalies over the global oceans |
title_sort |
estimation of the surface heat flux response to sea surface temperature anomalies over the global oceans |
publisher |
American Meteorological Society |
publishDate |
2005 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-005-383 https://doi.org/10.1175/JCLI3521.1 |
geographic |
Indian Pacific |
geographic_facet |
Indian Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Journal of Climate http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-005-383 doi:10.1175/JCLI3521.1 ark:/85065/d7v1254v |
op_rights |
Copyright 2005 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be "fair use" under Section 107 or that satisfies the conditions specified in Section 108 of the U.S. Copyright Law (17 USC, as revised by P.L. 94-553) does not require the Society's permission. Republication, systematic reproduction, posting in electronic form on servers, or other uses of this material, except as exempted by the above statements, requires written permission or license from the AMS. Additional details are provided in the AMS Copyright Policies, available from the AMS at 617-227-2425 or amspubs@ametsoc.org. Permission to place a copy of this work on this server has been provided by the AMS. The AMS does not guarantee that the copy provided here is an accurate copy of the published work. |
op_doi |
https://doi.org/10.1175/JCLI3521.1 |
container_title |
Journal of Climate |
container_volume |
18 |
container_issue |
21 |
container_start_page |
4582 |
op_container_end_page |
4599 |
_version_ |
1778530186800660480 |