Significant Atmospheric Boundary Layer Change Observed above an Agulhas Current Warm Cored Eddy

The air-sea impact of a warm cored eddy ejected from the Agulhas Retroflection region south of Africa was assessed through both ocean and atmospheric profiling measurements during the austral summer. The presence of the eddy causes dramatic atmospheric boundary layer deepening, exceeding what was me...

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Main Authors: C. Messager, S. Swart
Format: Article
Language:English
Published: Wiley 2016-01-01
Series:Advances in Meteorology
Online Access:http://dx.doi.org/10.1155/2016/3659657
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author C. Messager
S. Swart
author_facet C. Messager
S. Swart
author_sort C. Messager
collection DOAJ
description The air-sea impact of a warm cored eddy ejected from the Agulhas Retroflection region south of Africa was assessed through both ocean and atmospheric profiling measurements during the austral summer. The presence of the eddy causes dramatic atmospheric boundary layer deepening, exceeding what was measured previously over such a feature in the region. This deepening seems mainly due to the turbulent heat flux anomaly above the warm eddy inducing extensive deep and persistent changes in the atmospheric boundary layer thermodynamics. The loss of heat by turbulent processes suggests that this kind of oceanic feature is an important and persistent source of heat for the atmosphere.
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spelling doaj-art-2d28b1f01bb34a9b921d3740d36f1dce2025-08-20T02:24:14ZengWileyAdvances in Meteorology1687-93091687-93172016-01-01201610.1155/2016/36596573659657Significant Atmospheric Boundary Layer Change Observed above an Agulhas Current Warm Cored EddyC. Messager0S. Swart1Laboratoire de Physique des Océans, CNRS, UMR 6523, BP 70, 29280 Plouzané Cedex, FranceSouthern Ocean Carbon & Climate Observatory, Council for Scientific & Industrial Research, 15 Lower Hope Street, Rosebank 7700, South AfricaThe air-sea impact of a warm cored eddy ejected from the Agulhas Retroflection region south of Africa was assessed through both ocean and atmospheric profiling measurements during the austral summer. The presence of the eddy causes dramatic atmospheric boundary layer deepening, exceeding what was measured previously over such a feature in the region. This deepening seems mainly due to the turbulent heat flux anomaly above the warm eddy inducing extensive deep and persistent changes in the atmospheric boundary layer thermodynamics. The loss of heat by turbulent processes suggests that this kind of oceanic feature is an important and persistent source of heat for the atmosphere.http://dx.doi.org/10.1155/2016/3659657
spellingShingle C. Messager
S. Swart
Significant Atmospheric Boundary Layer Change Observed above an Agulhas Current Warm Cored Eddy
Advances in Meteorology
title Significant Atmospheric Boundary Layer Change Observed above an Agulhas Current Warm Cored Eddy
title_full Significant Atmospheric Boundary Layer Change Observed above an Agulhas Current Warm Cored Eddy
title_fullStr Significant Atmospheric Boundary Layer Change Observed above an Agulhas Current Warm Cored Eddy
title_full_unstemmed Significant Atmospheric Boundary Layer Change Observed above an Agulhas Current Warm Cored Eddy
title_short Significant Atmospheric Boundary Layer Change Observed above an Agulhas Current Warm Cored Eddy
title_sort significant atmospheric boundary layer change observed above an agulhas current warm cored eddy
url http://dx.doi.org/10.1155/2016/3659657
work_keys_str_mv AT cmessager significantatmosphericboundarylayerchangeobservedaboveanagulhascurrentwarmcorededdy
AT sswart significantatmosphericboundarylayerchangeobservedaboveanagulhascurrentwarmcorededdy