High Resolution Dynamics Limb Sounder measurements of gravity wave activity in the 2006 Arctic stratosphere

C. J. Wright, S. M. Osprey, J. J. Barnett, L. J. Gray, J. C. Gille

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36 Citations (Scopus)

Abstract

Observations from the High Resolution Dynamics Limb Sounder (HIRDLS) instrument on NASA's Aura satellite are used to quantify gravity wave momentum fluxes in the middle atmosphere. The period around the 2006 Arctic sudden stratospheric warming (SSW) is investigated, during which a substantial elevation of the stratopause occurred. Analysis of the HIRDLS results, together with analysis of European Centre for Medium‐Range Weather Forecasting zonal winds, provide direct evidence of wind filtering of the gravity wave spectrum during this period. This confirms previous hypotheses from model studies and further contributes to our understanding of the effects of gravity wave driving on the winter polar stratopause.
Original languageEnglish
Article numberD02105
Number of pages10
JournalJournal of Geophysical Research: Atmospheres
Volume115
Issue numberD2
Early online date23 Jan 2010
DOIs
Publication statusPublished - 27 Jan 2010

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