Project 1.1 Changes in wave sources


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  • Co-leaders: Kaoru Sato (JP), Jadwiga (Yaga) H. Richter (US)
  • Members: J. Bacmeister (US), S. Eckermann (US), M. Ern (DE), P. Kushner (CA), P. Preusse (DE), H. Schmidt (DE), R. A. Vincent (AU), S. Watanabe (JP)



Changing climate causes changes in tropospheric GW sources: jet-front systems, convection, and orography.

Climate change is related to long-term change of the intensity and source location of planetary waves in response to the change in radiation processes.

Change in storm tracks in the troposphere affects climate in the middle and upper atmosphere, directly by changing the lower part of stratospheric circulation and indirectly by modifying GW and PW sources and propagations


To assess changes in GW sources, storm tracks and planetary waves in response to a changing climate


1. GCMs with parameterized GW sources: comparison of parameterized waves in long-term simulations (convection, fronts, orography)

2. All GCMs: comparison of storm tracks and planetary waves in long-term simulations

3. High resolution GCMs (~25 km): look at changes in frontally and orographically excited waves in long-term simulations

4. High-top gravity wave resolving GCMs (up to the mesosphere and/or thermosphere): look at changes in gravity wave sources and propagation in simulations with different climate conditions

5. Radar and Lidar Observations: look at trends in GWs in the MLT and compare to models

6. Reanalysis data: examine long-term changes of storm tracks and PWs in the troposphere and lower stratosphere

7. High-resolution satellite observations: examine changes of global distribution of GWs and comparison with high-resolution GCMs

Related meetings

AGU Chapman Conference on Atmospheric Gravity Waves and Their Effects on General Circulation and Climate Honolulu, Hawaii, 28 February – 4 March 2011.

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