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https://hdl.handle.net/2440/12603
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dc.contributor.author | Alexander, M. | - |
dc.contributor.author | Tsuda, T. | - |
dc.contributor.author | Vincent, R. | - |
dc.date.issued | 2002 | - |
dc.identifier.citation | Journal of the Atmospheric Sciences, 2002; 59(8):1394-1404 | - |
dc.identifier.issn | 0022-4928 | - |
dc.identifier.issn | 1520-0469 | - |
dc.identifier.uri | http://hdl.handle.net/2440/12603 | - |
dc.description | © 2002 American Meteorological Society | - |
dc.description.abstract | Knowledge of the latitudinal variations in the occurrence of gravity waves is important for their parameter-ization in global models. Observations of gravity waves with short vertical scales have shown a pronounced peak in wave activity at tropical latitudes. In this paper, it is shown that such a peak may be a natural consequence of the latitudinal variation in the Coriolis parameter, which controls the lower limit for gravity-wave intrinsic frequencies &ωcirc;. Two distinct but related effects of this parameter on observations of gravity-wave activity are explained and explored with a simple model. The results are also compared to observed latitudinal variations in gravity-wave activity. The authors formally distinguish between observed gravity-wave spectra and what is called gravity-wave "source spectra," the latter being appropriate for input to gravity-wave parameterizations. The results suggest that the dependence of the gravity-wave energy spectrum commonly assumed as input to parameterizations is likely too steeply sloped. Much more shallowly sloped spectra for gravity-wave parameterization input α&ωcirc;[sup -0.6] &ωcirc;[sup -0.7] show better agreement with observations. The results also underscore the potential importance of intermittency in gravity-wave sources to the interpretation of gravity-wave observations. | - |
dc.description.statementofresponsibility | Alexander, M. Joan; Tsuda, Toshitaka; Vincent, Robert A. | - |
dc.language.iso | en | - |
dc.publisher | Amer Meteorological Soc | - |
dc.source.uri | http://dx.doi.org/10.1175/1520-0469(2002)059%3C1394:lvoigw%3E2.0.co;2 | - |
dc.title | Latitudinal variations observed in gravity waves with short vertical wavelengths | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1175/1520-0469(2002)059<1394:LVOIGW>2.0.CO;2 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Vincent, R. [0000-0001-6559-6544] | - |
Appears in Collections: | Aurora harvest 7 Physics publications |
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