Sea surface temperature as a proxy for convective gravity wave excitation: a study based on global gravity wave observations in the middle atmosphere
Absolute values of gravity wave momentum flux (GWMF) deduced from satellite measurements by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument and the High Resolution Dynamics Limb Sounder (HIRDLS) are correlated with sea surface temperature (SST) with the aim o...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2014-11-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/32/1373/2014/angeo-32-1373-2014.pdf |
| _version_ | 1819024066085912576 |
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| author | J. Y. Jia J. Y. Jia P. Preusse M. Ern H.-Y. Chun J. C. Gille J. C. Gille S. D. Eckermann M. Riese |
| author_facet | J. Y. Jia J. Y. Jia P. Preusse M. Ern H.-Y. Chun J. C. Gille J. C. Gille S. D. Eckermann M. Riese |
| author_sort | J. Y. Jia |
| collection | DOAJ |
| description | Absolute values of gravity wave momentum flux (GWMF) deduced from satellite
measurements by the Sounding of the Atmosphere using Broadband Emission
Radiometry (SABER) instrument and the High Resolution Dynamics Limb Sounder
(HIRDLS) are correlated with sea surface temperature (SST) with the aim of
identifying those oceanic regions for which convection is a major source of
gravity waves (GWs). Our study identifies those latitude bands where high
correlation coefficients indicate convective excitation with confidence. This
is based on a global ray-tracing simulation, which is used to delineate the
source and wind-filtering effects. Convective GWs are identified at the eastern coasts of the continents and over the warm water regions formed by the warm
ocean currents, in particular the Gulf Stream and the Kuroshio. Potential
contributions of tropical cyclones to the excitation of the GWs are
discussed. Convective excitation can be identified well into the mid-mesosphere. In propagating upward, the centers of GWMF formed by convection
shift poleward. Some indications of the main forcing regions are even shown
for the upper mesosphere/lower thermosphere (MLT). |
| first_indexed | 2024-12-21T04:48:52Z |
| format | Article |
| id | doaj.art-cf2e0038c3854564ad44469141631416 |
| institution | Directory Open Access Journal |
| issn | 0992-7689 1432-0576 |
| language | English |
| last_indexed | 2024-12-21T04:48:52Z |
| publishDate | 2014-11-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Annales Geophysicae |
| spelling | doaj.art-cf2e0038c3854564ad444691416314162022-12-21T19:15:30ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762014-11-01321373139410.5194/angeo-32-1373-2014Sea surface temperature as a proxy for convective gravity wave excitation: a study based on global gravity wave observations in the middle atmosphereJ. Y. Jia0J. Y. Jia1P. Preusse2M. Ern3H.-Y. Chun4J. C. Gille5J. C. Gille6S. D. Eckermann7M. Riese8Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science & Technology, Nanjing, ChinaInstitut für Energie- und Klimaforschung – Stratosphäre, Forschungszentrum Jülich GmbH, Jülich, GermanyInstitut für Energie- und Klimaforschung – Stratosphäre, Forschungszentrum Jülich GmbH, Jülich, GermanyInstitut für Energie- und Klimaforschung – Stratosphäre, Forschungszentrum Jülich GmbH, Jülich, GermanyDepartment of Atmospheric Sciences, Yonsei University, Seoul, South KoreaCenter for Limb Atmospheric Sounding, University of Colorado at Boulder, Boulder, Colorado, USANational Center for Atmospheric Research, Boulder, Colorado, USASpace Science Division, Naval Research Laboratory, Washington DC 20375, USAInstitut für Energie- und Klimaforschung – Stratosphäre, Forschungszentrum Jülich GmbH, Jülich, GermanyAbsolute values of gravity wave momentum flux (GWMF) deduced from satellite measurements by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument and the High Resolution Dynamics Limb Sounder (HIRDLS) are correlated with sea surface temperature (SST) with the aim of identifying those oceanic regions for which convection is a major source of gravity waves (GWs). Our study identifies those latitude bands where high correlation coefficients indicate convective excitation with confidence. This is based on a global ray-tracing simulation, which is used to delineate the source and wind-filtering effects. Convective GWs are identified at the eastern coasts of the continents and over the warm water regions formed by the warm ocean currents, in particular the Gulf Stream and the Kuroshio. Potential contributions of tropical cyclones to the excitation of the GWs are discussed. Convective excitation can be identified well into the mid-mesosphere. In propagating upward, the centers of GWMF formed by convection shift poleward. Some indications of the main forcing regions are even shown for the upper mesosphere/lower thermosphere (MLT).https://www.ann-geophys.net/32/1373/2014/angeo-32-1373-2014.pdf |
| spellingShingle | J. Y. Jia J. Y. Jia P. Preusse M. Ern H.-Y. Chun J. C. Gille J. C. Gille S. D. Eckermann M. Riese Sea surface temperature as a proxy for convective gravity wave excitation: a study based on global gravity wave observations in the middle atmosphere Annales Geophysicae |
| title | Sea surface temperature as a proxy for convective gravity wave excitation: a study based on global gravity wave observations in the middle atmosphere |
| title_full | Sea surface temperature as a proxy for convective gravity wave excitation: a study based on global gravity wave observations in the middle atmosphere |
| title_fullStr | Sea surface temperature as a proxy for convective gravity wave excitation: a study based on global gravity wave observations in the middle atmosphere |
| title_full_unstemmed | Sea surface temperature as a proxy for convective gravity wave excitation: a study based on global gravity wave observations in the middle atmosphere |
| title_short | Sea surface temperature as a proxy for convective gravity wave excitation: a study based on global gravity wave observations in the middle atmosphere |
| title_sort | sea surface temperature as a proxy for convective gravity wave excitation a study based on global gravity wave observations in the middle atmosphere |
| url | https://www.ann-geophys.net/32/1373/2014/angeo-32-1373-2014.pdf |
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