Date:
Tuesday, March 25, 2014, 3:00pm to 4:00pm
Location:
HUCE Seminar Room
ClimaTea is held every Tuesday from 3-4pm in the HUCE Seminar room, which is on the 3rd floor of the Geo Museum in the Harvard University Center for the Environment.
Speaker: Dr. Tiffany Shaw
Abstract:
"The Northern Hemisphere exhibits an abrupt regime transition between winter in summer involving the organization of the flow into subtropical anticyclones and monsoons. The transition provides a useful example of how moisture and momentum transports by planetary-scale waves are coordinated to dominate the large-scale circulation. The mechanisms of the abrupt transition are explored in idealized aquaplanet model simulations with a prescribed subtropical zonally asymmetric SST perturbation. The results are understood using quasi-geostrophic dynamics and provide new indicators for assessing the transition in the real atmosphere. They can also be used to understand why the transition in the Southern Hemisphere is less abrupt. Future changes in the circulation transition will be discussed in the context of the CMIP5 simulations"
She provides the attached papers as background reading.
 | plumb_hou_1992.pdf | 758 KB |
| quote_20444593_-_harvard_-_douthitt.pdf | 79 KB |
| shaw_2014.pdf | 3.14 MB |
