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Fröhlich, K.; Schmidt, T.; Ern, M.; Preusse, P.; de la Torre, A.; Wickert, J.; Jacobi, Ch. "The global distribution of gravity wave energy in the lower stratosphere derived from GPS data and gravity wave modelling: Attempt and challenges" (2007) Journal of Atmospheric and Solar-Terrestrial Physics. 69(17-18):2238-2248
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Abstract:

Five years of global temperatures retrieved from radio occultations measured by Champ (Challenging Minisatellite Payload) and SAC-C (Satelite de Aplicaciones Cientificas-C) are analyzed for gravity waves (GWs). In order to separate GWs from other atmospheric variations, a high-pass filter was applied on the vertical profile. Resulting temperature fluctuations correspond to vertical wavelengths between 400 m (instrumental resolution) and 10 km (limit of the high-pass filter). The temperature fluctuations can be converted into GW potential energy, but for comparison with parameterization schemes GW momentum flux is required. We therefore used representative values for the vertical and horizontal wavelength to infer GW momentum flux from the GPS measurements. The vertical wavelength value is determined by high-pass filtering, the horizontal wavelength is adopted from a latitude-dependent climatology. The obtained momentum flux distributions agree well, both in global distribution and in absolute values, with simulations using the Warner and McIntyre parameterization (WM) scheme. However, discrepancies are found in the annual cycle. Online simulations, implementing the WM scheme in the mechanistic COMMA-LIM (Cologne Model of the Middle Atmosphere-Leipzig Institute for Meteorology) general circulation model (GCM), do not converge, demonstrating that a good representation of GWs in a GCM requires both a realistic launch distribution and an adequate representation of GW breaking and momentum transfer. © 2007 Elsevier Ltd. All rights reserved.

Registro:

Documento: Artículo
Título:The global distribution of gravity wave energy in the lower stratosphere derived from GPS data and gravity wave modelling: Attempt and challenges
Autor:Fröhlich, K.; Schmidt, T.; Ern, M.; Preusse, P.; de la Torre, A.; Wickert, J.; Jacobi, Ch.
Filiación:Institut für Meteorologie, Universität Leipzig, Stephanstr. 3, D-04103 Leipzig, Germany
Department 1: Geodesy and Remote Sensing, Geoforschungszentrum Potsdam, Germany
Institute for Chemistry and Dynamics of the Geosphere, Forschungszentrum Jülich, Germany
Facultad de Ciencias Exactas y Naturales, Universidad Buenos Aires, Argentina
Palabras clave:GPS; Gravity waves; Momentum flux; Parameterization scheme; Atmospheric temperature; Computer simulation; Global positioning system; Gravity waves; Parameterization; Upper atmosphere; Gravity wave energy; Momentum flux; Momentum flux distributions; Meteorology
Año:2007
Volumen:69
Número:17-18
Página de inicio:2238
Página de fin:2248
DOI: http://dx.doi.org/10.1016/j.jastp.2007.07.005
Título revista:Journal of Atmospheric and Solar-Terrestrial Physics
Título revista abreviado:J. Atmos. Sol.-Terr. Phys.
ISSN:13646826
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13646826_v69_n17-18_p2238_Frohlich

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Citas:

---------- APA ----------
Fröhlich, K., Schmidt, T., Ern, M., Preusse, P., de la Torre, A., Wickert, J. & Jacobi, Ch. (2007) . The global distribution of gravity wave energy in the lower stratosphere derived from GPS data and gravity wave modelling: Attempt and challenges. Journal of Atmospheric and Solar-Terrestrial Physics, 69(17-18), 2238-2248.
http://dx.doi.org/10.1016/j.jastp.2007.07.005
---------- CHICAGO ----------
Fröhlich, K., Schmidt, T., Ern, M., Preusse, P., de la Torre, A., Wickert, J., et al. "The global distribution of gravity wave energy in the lower stratosphere derived from GPS data and gravity wave modelling: Attempt and challenges" . Journal of Atmospheric and Solar-Terrestrial Physics 69, no. 17-18 (2007) : 2238-2248.
http://dx.doi.org/10.1016/j.jastp.2007.07.005
---------- MLA ----------
Fröhlich, K., Schmidt, T., Ern, M., Preusse, P., de la Torre, A., Wickert, J., et al. "The global distribution of gravity wave energy in the lower stratosphere derived from GPS data and gravity wave modelling: Attempt and challenges" . Journal of Atmospheric and Solar-Terrestrial Physics, vol. 69, no. 17-18, 2007, pp. 2238-2248.
http://dx.doi.org/10.1016/j.jastp.2007.07.005
---------- VANCOUVER ----------
Fröhlich, K., Schmidt, T., Ern, M., Preusse, P., de la Torre, A., Wickert, J., et al. The global distribution of gravity wave energy in the lower stratosphere derived from GPS data and gravity wave modelling: Attempt and challenges. J. Atmos. Sol.-Terr. Phys. 2007;69(17-18):2238-2248.
http://dx.doi.org/10.1016/j.jastp.2007.07.005