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

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 e...

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Bibliographic Details
Published in:Journal of Geophysical Research
Main Authors: Wright, C, Osprey, S, Barnett, J, Gray, L, Gille, J
Format: Article in Journal/Newspaper
Language:English
Published: Blackwell Publishing Ltd 2016
Subjects:
Arctic
Online Access:https://doi.org/10.1029/2009JD011858
https://ora.ox.ac.uk/objects/uuid:c6b21a1d-ec6f-4671-9a33-c95f54770e4e
Description
Summary: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. Copyright © 2010 by the American Geophysical Union.

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