University of Cambridge > Talks.cam > British Antarctic Survey > Stratosphere-Troposphere Coupling: The Importance of Stationary Planetary Waves

  Browse A-Z

Log in

Cambridge users (raven)details Other usersdetails No account?details

Information on

Subscribing to talksdetails Finding a talkdetails Adding a talkdetails Disseminating talksdetails Help and Documentationdetails

Stratosphere-Troposphere Coupling: The Importance of Stationary Planetary Waves

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Ryan Woodard.

Open to non-BAS; please contact Gary Abel (gaab@bas.ac.uk or 221281) if you would like to attend.

I will discuss the impact of topographically forced stationary waves in the dynamical coupling between the stratosphere and the troposphere in a simple atmospheric General Circulation Model similar to that of Polvani and Kushner (2002, GRL ). I find that the mean structure and variability of the polar vortex in this model is very sensitive to the structure of the topography, and Northern Hemisphere-like variability, with the correct frequency of warming events, occurs only for a relatively narrow range of topographic heights. The variable polar vortex (i.e. one associated with realistically frequent sudden warmings) is less coupled to the troposphere on climatological timescales than in the absence of topographic forcing. On intraseasonal timescales, however, coupling between the stratosphere and troposphere depends critically on the stationary wave induced variability of the polar vortex.

This talk is part of the British Antarctic Survey series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

Other lists

PMP Presentation Day Beyond Profit Think Tank CERF and CF Events

Other talks

PTPmesh: Data Center Network Latency Measurements Using PTP Quantifying Uncertainty in Turbulent Flow Predictions based on RANS/LES Closures The Move of Economics Ideas and Numbers into Policy The Design of Resilient Engineering Infrastructure Systems with Bayesian Networks Understanding model diversity in CMIP5 projections of westerly winds over the Southern Ocean Ramble through my greenhouse and Automation Atiyah Floer conjecture Lecture Supper: James Stuart: Radical liberalism, ‘non-gremial students’ and continuing education Single Cell Seminars (October) Genomic Approaches to Cancer DataFlow SuperComputing for BigData Poland, Europe, Freedom: A Personal Reflection on the Last 40 Years
 

© 2006-2024 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity