Joint Seminar: Using the dry dynamical core to understand large-scale circulation changes

In the model hierarchy used to study the atmospheric circulation response to climate change, full-physics general circulation models are usually complemented by models with simplified, zonally symmetric boundary conditions (the aquaplanet) and models with zonally symmetric boundary conditions and strongly simplified physics (dry dynamical core or Held-Suarez type experiments). The latter replace all model physics by relaxation of temperatures to a background temperature profile and relaxation of wind speeds to zero near the surface. 
In this talk, I will present an ICON setup with simplified Held-Suarez type physics but zonally asymmetric boundary conditions (realistic topography) and show how it can be used to study important features of the atmospheric circulation response to climate change including the poleward shift of mid-latitude jets and changes in the zonally asymmetric circulation. 

Date

29.11.2017

Time

13:30 h

Place

Bundesstr. 53, room 022/023
Seminar Room 022/023, Ground Floor, Bundesstrasse 53, 20146 Hamburg, Hamburg

Speaker

Felix Pithan, University of Reading

Organizers

Thorsten Mauritsen

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