A32F:
The Dynamical Processes of Stratosphere-Troposphere Interactions and Their Relationship with Climate II

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Session ID#: 16409

Session Description:
In recent years, it has become evident that stratospheric variability has impacts on weather and climate patterns at the Earth's surface on a range of timescales. Given the amplitude of these changes, it is important to understand the cause and effect relationship in the patterns of the variability. This session will focus on advancing our mechanistic understanding of the two-way coupling between the troposphere and the stratosphere in the present climate as well as the evolving nature of these interactions in a changing climate. Abstracts involving theoretical, modeling, and observational studies of the mechanisms underlying stratosphere-troposphere interactions, the role of stratospheric changes in present and future climates, and the physics of annular modes are all encouraged. Additionally, the importance of transport processes and of interactive chemistry in model studies in correctly capturing these interactions are also solicited.
Primary Convener:  Marianna Linz, Massachusetts Institute of Technology, Cambridge, MA, United States
Conveners:  Aditi Sheshadri, Columbia University of New York, Palisades, United States, Alison Ming, University of Cambridge, Cambridge, United Kingdom and Peter Hitchcock, University of Cambridge, Earth and Atmospheric Sciences, Cambridge, United Kingdom
Chairs:  Aditi Sheshadri, Columbia University of New York, Palisades, United States and Alison Ming, University of Cambridge, Cambridge, United Kingdom
OSPA Liaison:  Peter Hitchcock, University of Cambridge, Earth and Atmospheric Sciences, Cambridge, United Kingdom
Index Terms:

3305 Climate change and variability [ATMOSPHERIC PROCESSES]
3337 Global climate models [ATMOSPHERIC PROCESSES]
3362 Stratosphere/troposphere interactions [ATMOSPHERIC PROCESSES]
3363 Stratospheric dynamics [ATMOSPHERIC PROCESSES]

Abstracts Submitted to this Session:

Barotropic Decelerations of the Southern Stratospheric Polar Vortex (146878)
José M. Castanheira and Carlos A F Marques, University of Aveiro, CESAM & Department of Physics, Aveiro, Portugal
Dynamics of extreme negative stratospheric planetary wave heat flux events in an idealized model (161633)
Etienne Dunn-Sigouin, Columbia University of New York, Palisades, United States and Tiffany Shaw, The University of Chicago, Chicago, United States
Stratospheric Sudden Warmings and North Atlantic Ocean Variability (Invited) (157524)
Karen L Smith, University of Toronto, Physical and Environmental Sciences, Toronto, ON, Canada and Prof. Lorenzo M Polvani, PhD, Columbia University of New York, Palisades, NY, United States
Circulation response to ozone depletion depends on the zonal wind climatology (149110)
Pu Lin, Geophysical Fluid Dynamics Laboratory, Princeton, United States, David Paynter, NOAA/Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States, Prof. Lorenzo M Polvani, PhD, Columbia University of New York, Palisades, NY, United States, Gustavo J P Correa, Columbia University of New York, Lamont-Doherty Earth Observatory, Palisades, NY, United States, Yi Ming, Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States and V Ramaswamy, NOAA/OAR/ GFDL, Princeton, United States
Propagating and Non-propagating Annular Modes and Principal Oscillation Patterns (Invited) (195896)
Raymond Alan Plumb, MIT, Dept.of Earth Atmospheric and Planetary Sciences, Cambridge, MA, United States and Aditi Sheshadri, Columbia University of New York, Palisades, United States
Understanding Wave-mean Flow Feedbacks and Tropospheric Annular Variability (189330)
David J Lorenz, Center for Climatic Research, Madison, WI, United States
The Anomalous Change in the QBO in 2015-16 (181751)
Lawrence Coy, Science Systems and Applications, Inc., Lanham, MD, United States, Paul A Newman, NASA Goddard Space Flight Center, Code 610, Greenbelt, MD, United States, Steven Pawson, NASA Goddard Space Flight Center, Global Modeling and Assimilation Office, Greenbelt, United States and Leslie R Lait, NASA ARC/GSFC, Greenbelt, United States
Constraining the Stratosphere-Troposphere Exchange of Radiocarbon using AirCore 14CO2 Measurements (168717)
Huilin Chen, University of Colorado, Cooperative Institute for Research in Environmental Sciences (CIRES), Boulder, United States; University of Groningen, Centre for Isotope Research, Groningen, Netherlands

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