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Dynamic coupling in the terrestrial atmosphere (joint with RMetSoc)
The Royal Astronomical Society
Burlington House
Start Time: 8 Dec 2017 - 10:30
End Time: 8 Dec 2017 - 15:30

A RAS Specialist Discussion organised by *Tracy Moffat-Griffin (BAS); Andrew Kavanagh (BAS); Nick Mitchell; Alan Gadian



It is becoming increasingly apparent that the lower, middle and upper atmosphere are more strongly coupled than was once thought to be the case and that atmospheric waves play a central role in this coupling. Generated by a variety of sources, these waves carry energy and momentum vertically, and are a principle driver of atmospheric circulation, transporting important chemical species through the atmosphere. In the lower atmosphere global scale waves (tides and planetary waves) are generated; smaller scale waves (such as gravity waves) are generated by weather systems, topographic flow and the polar vortex as well as by processes in the upper atmosphere (via space weather effects). There is growing evidence that space weather can have an effect on surface conditions in the Polar Regions yet the coupling mechanism is not fully understood. This meeting aims to bring together the lower, middle and upper atmosphere communities to explore these coupling effects and their impact on global circulation.


10.30 Global-scale teleconnections in the neutral atmosphere, Prof Ted Shepherd FRS, University of Reading

11.00 The representation of gravity waves in models and how to improve it, Prof Simon Vosper, Met Office

11.20 Measuring atmospheric waves using NASA AIRS, Dr Corwin Wright, University of Bath

11.40 The interhemispheric coupling mechanism and how it matters, Dr Bodil Karlsson, Stockholm University


12.10 Lunch/poster session


13.30 The whole-atmosphere response to changes in the Earth's magnetic field from 1900 to 2000: an example of "top-down" vertical coupling, Dr Ingrid Cnossen, British Antarctic Survey

14.00 Time-variability of the ionospheric electric field: solar wind driving and atmospheric feedback, Dr Adrian Grocott, Lancaster University

14.20 Recalibrating thermospheric models for a likely new era of low solar activity, Dr Anasuya Aruliah, University College London

14.40 The temperature signature of an IMF-driven change to the global atmospheric electric circuit in the Antarctic troposphere, Dr Mai Mai Lam, British Antarctic Survey (visiting scientist)

15.00 Discussion session

15.30 Meeting Close