Animation of longitudinal cross-sections of residual vertical velocity

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Video in TIB AV-Portal: Animation of longitudinal cross-sections of residual vertical velocity

Formal Metadata

Title
Animation of longitudinal cross-sections of residual vertical velocity
Subtitle
For the SSWbox simulation at particular latitudes encompassing the GWD area
Title of Series
Author
License
CC Attribution - NonCommercial 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
Identifiers
Publisher
Release Date
2016
Language
Silent film
Producer
Šácha, Petr
Production Place
Prague

Content Metadata

Subject Area
Abstract
This animation is part of a paper Influence of the spatial distribution of gravity wave activity on the middle atmospheric circulation and transport, which is under review to Atmospheric Chemistry and Physics Journal. Analyzing GPS radio occultation density profiles, we have recently pointed out a localized area of enhanced gravity wave (GW) activity and breaking in the lower stratosphere of the Eastern Asia/North-western Pacific (EA/NP) region. With a mechanistic model of the middle and upper atmosphere experiments are performed to study a possible effect of such a localized GW breaking region on the large-scale circulation and transport and, more generally, a possible influence of the spatial distribution of gravity wave activity on the middle atmospheric circulation and transport. The results indicate an important role of the spatial distribution of GW activity for the polar vortex stability, formation of planetary waves (PW) and for the strength and structure of the zonal mean residual circulation. Also, a possible effect of a zonally asymmetric GW breaking in the longitudinal variability of the Brewer-Dobson circulation is analyzed. Finally, consequences of our results for a variety of research topics (sudden stratospheric warmings, atmospheric blocking, teleconnections and a compensation mechanism between resolved and unresolved drag) are discussed.
Keywords gravity wave middle atmosphere sudden stratospheric warming residual circulation

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