Atmospheric Forcing of the Winter Air–Sea Heat Fluxes over the Northern Red Sea

Handle URI:
http://hdl.handle.net/10754/552739
Title:
Atmospheric Forcing of the Winter Air–Sea Heat Fluxes over the Northern Red Sea
Authors:
Papadopoulos, Vassilis P.; Abualnaja, Yasser; Josey, Simon A.; Bower, Amy; Raitsos, Dionysios E.; Kontoyiannis, Harilaos; Hoteit, Ibrahim ( 0000-0002-3751-4393 )
Abstract:
The influence of the atmospheric circulation on the winter air–sea heat fluxes over the northern Red Sea is investigated during the period 1985–2011. The analysis based on daily heat flux values reveals that most of the net surface heat exchange variability depends on the behavior of the turbulent components of the surface flux (the sum of the latent and sensible heat). The large-scale composite sea level pressure (SLP) maps corresponding to turbulent flux minima and maxima show distinct atmospheric circulation patterns associated with each case. In general, extreme heat loss (with turbulent flux lower than −400 W m−2) over the northern Red Sea is observed when anticyclonic conditions prevail over an area extending from the Mediterranean Sea to eastern Asia along with a recession of the equatorial African lows system. Subcenters of high pressure associated with this pattern generate the required steep SLP gradient that enhances the wind magnitude and transfers cold and dry air masses from higher latitudes. Conversely, turbulent flux maxima (heat loss minimization with values from −100 to −50 W m−2) are associated with prevailing low pressures over the eastern Mediterranean and an extended equatorial African low that reaches the southern part of the Red Sea. In this case, a smooth SLP field over the northern Red Sea results in weak winds over the area that in turn reduce the surface heat loss. At the same time, southerlies blowing along the main axis of the Red Sea transfer warm and humid air northward, favoring heat flux maxima.
KAUST Department:
Red Sea Research Center (RSRC); Physical Sciences and Engineering (PSE) Division
Citation:
Atmospheric Forcing of the Winter Air–Sea Heat Fluxes over the Northern Red Sea 2013, 26 (5):1685 Journal of Climate
Publisher:
American Meteorological Society
Journal:
Journal of Climate
Issue Date:
Mar-2013
DOI:
10.1175/JCLI-D-12-00267.1
Type:
Article
ISSN:
0894-8755; 1520-0442
Additional Links:
http://journals.ametsoc.org/doi/abs/10.1175/JCLI-D-12-00267.1
Appears in Collections:
Articles; Red Sea Research Center (RSRC); Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorPapadopoulos, Vassilis P.en
dc.contributor.authorAbualnaja, Yasseren
dc.contributor.authorJosey, Simon A.en
dc.contributor.authorBower, Amyen
dc.contributor.authorRaitsos, Dionysios E.en
dc.contributor.authorKontoyiannis, Harilaosen
dc.contributor.authorHoteit, Ibrahimen
dc.date.accessioned2015-05-14T06:24:43Zen
dc.date.available2015-05-14T06:24:43Zen
dc.date.issued2013-03en
dc.identifier.citationAtmospheric Forcing of the Winter Air–Sea Heat Fluxes over the Northern Red Sea 2013, 26 (5):1685 Journal of Climateen
dc.identifier.issn0894-8755en
dc.identifier.issn1520-0442en
dc.identifier.doi10.1175/JCLI-D-12-00267.1en
dc.identifier.urihttp://hdl.handle.net/10754/552739en
dc.description.abstractThe influence of the atmospheric circulation on the winter air–sea heat fluxes over the northern Red Sea is investigated during the period 1985–2011. The analysis based on daily heat flux values reveals that most of the net surface heat exchange variability depends on the behavior of the turbulent components of the surface flux (the sum of the latent and sensible heat). The large-scale composite sea level pressure (SLP) maps corresponding to turbulent flux minima and maxima show distinct atmospheric circulation patterns associated with each case. In general, extreme heat loss (with turbulent flux lower than −400 W m−2) over the northern Red Sea is observed when anticyclonic conditions prevail over an area extending from the Mediterranean Sea to eastern Asia along with a recession of the equatorial African lows system. Subcenters of high pressure associated with this pattern generate the required steep SLP gradient that enhances the wind magnitude and transfers cold and dry air masses from higher latitudes. Conversely, turbulent flux maxima (heat loss minimization with values from −100 to −50 W m−2) are associated with prevailing low pressures over the eastern Mediterranean and an extended equatorial African low that reaches the southern part of the Red Sea. In this case, a smooth SLP field over the northern Red Sea results in weak winds over the area that in turn reduce the surface heat loss. At the same time, southerlies blowing along the main axis of the Red Sea transfer warm and humid air northward, favoring heat flux maxima.en
dc.publisherAmerican Meteorological Societyen
dc.relation.urlhttp://journals.ametsoc.org/doi/abs/10.1175/JCLI-D-12-00267.1en
dc.rights© Copyright 2013 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 of the U.S. Copyright Act September 2010 Page 2 or that satisfies the conditions specified in Section 108 of the U.S. Copyright Act (17 USC §108, as revised by P.L. 94-553) does not require the AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a web site or in a searchable database, or other uses of this material, except as exempted by the above statement, requires written permission or a license from the AMS. Additional details are provided in the AMS Copyright Policy, available on the AMS Web site located at (http://www.ametsoc.org/) or from the AMS at 617-227-2425 or copyrights@ametsoc.org.en
dc.subjectExtreme eventsen
dc.subjectAir-sea interactionen
dc.subjectForcingen
dc.subjectSurface fluxesen
dc.subjectTrendsen
dc.titleAtmospheric Forcing of the Winter Air–Sea Heat Fluxes over the Northern Red Seaen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalJournal of Climateen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionHellenic Centre for Marine Research, Anavissos, Greeceen
dc.contributor.institutionNational Oceanography Centre, Southampton, United Kingdomen
dc.contributor.institutionWoods Hole Oceanographic Institution, Woods Hole, Massachusettsen
kaust.authorAbualnaja, Yasseren
kaust.authorRaitsos, Dionysios E.en
kaust.authorHoteit, Ibrahimen
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