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Record #176986:

Enhancement of gravity wave activity observed during a major Southern Hemisphere stratospheric warming by CHAMP/GPS / M. Venkat Ratnam, T. Tsuda, C. Jacobi, Y. Aoyama.

Title: Enhancement of gravity wave activity observed during a major Southern Hemisphere stratospheric warming by CHAMP/GPS / M. Venkat Ratnam, T. Tsuda, C. Jacobi, Y. Aoyama.
Author(s): Ratnam, M. Venkat.
Tsuda, T.
Jacobi, C.
Aoyama, Y.
Date: 2004.
In: Geophysical Research Letters. (2004.), Vol. 31(16) (2004)
Abstract: Uses temperature profiles measured by CHAMP/GPS occultations to analyse gravity wave activity during major sudden stratospheric warming in Southern Hemisphere in late winter/spring 2002, which split polar vortex into two parts. Observed temperatures show rapid poleward moving increase with maximum of about 25-30 K with respect to undisturbed winter conditions, and reversal of latitudinal gradients at 30 km and below within 15 days (September 15-30). During this time gravity wave energy (potential energy, Ep) became three times higher than usual. This enhancement mostly occurred near edge and outside cold polar vortex, but not inside vortex. Discusses observed event with potential interaction of gravity waves, planetary waves and mean circulation during stratospheric warming.
Notes:

Geophysical Research Letters. Vol. 31(16) :L16101, 1-4 (2004).

Keywords: 551.5 -- Meteorology.
551.51 -- Atmosphere. Structure, mechanics and thermodynamics.
551.510.532 -- Stratosphere.
551.513 -- Atmosphere, general circulation.
D -- Atmospheric sciences.
(*7) -- Antarctic regions.
SPRI record no.: 176986

MARCXML

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245 00 ‡aEnhancement of gravity wave activity observed during a major Southern Hemisphere stratospheric warming by CHAMP/GPS /‡cM. Venkat Ratnam, T. Tsuda, C. Jacobi, Y. Aoyama.
260 ## ‡a[S.l.] :‡b[s.n.],‡c2004.
300 ## ‡ap. L16101, 1-4 :‡bill., diags.
500 ## ‡aGeophysical Research Letters. Vol. 31(16) :L16101, 1-4 (2004).
520 3# ‡aUses temperature profiles measured by CHAMP/GPS occultations to analyse gravity wave activity during major sudden stratospheric warming in Southern Hemisphere in late winter/spring 2002, which split polar vortex into two parts. Observed temperatures show rapid poleward moving increase with maximum of about 25-30 K with respect to undisturbed winter conditions, and reversal of latitudinal gradients at 30 km and below within 15 days (September 15-30). During this time gravity wave energy (potential energy, Ep) became three times higher than usual. This enhancement mostly occurred near edge and outside cold polar vortex, but not inside vortex. Discusses observed event with potential interaction of gravity waves, planetary waves and mean circulation during stratospheric warming.
530 ## ‡aAlso issued online ‡uurn:doi:10.1029/2004GL019789‡uhttps://dx.doi.org/10.1029/2004GL019789
650 07 ‡a551.5 -- Meteorology.‡2udc
650 07 ‡a551.51 -- Atmosphere. Structure, mechanics and thermodynamics.‡2udc
650 07 ‡a551.510.532 -- Stratosphere.‡2udc
650 07 ‡a551.513 -- Atmosphere, general circulation.‡2udc
650 07 ‡aD -- Atmospheric sciences.‡2local
651 #7 ‡a(*7) -- Antarctic regions.‡2udc
700 1# ‡aRatnam, M. Venkat.
700 1# ‡aTsuda, T.
700 1# ‡aJacobi, C.
700 1# ‡aAoyama, Y.
773 0# ‡7nnas ‡tGeophysical Research Letters. ‡gVol. 31(16) (2004) ‡wSPRI-1033
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917 ## ‡aUnenhanced record from Muscat, imported 2019
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