A41F:
The Dynamics of the Large-Scale Atmospheric Circulation in Present and Future Climates: Jet Streams, Storm Tracks, Stationary Waves, and Monsoons I


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Session ID#: 61345

Session Description:
Large-scale atmospheric circulation plays a key role in the global climate system. Understanding the fundamental dynamics of the large-scale circulation is essential for constraining regional climate projections under increasing greenhouse gas concentrations. Furthermore, the dynamics of the atmospheric general circulation intimately interact with the energy and hydrological cycle, exerting profound impacts on extreme weather and climate events. Such interactions in both the tropics and extra-tropics occur on a wide range of spatial and temporal scales, which calls for a combination of conceptual understanding, hierarchical modeling, and observations.

We welcome contributions covering theory, idealized and comprehensive modeling, and novel diagnostic frameworks for observations and CMIP model outputs to improve our understanding of the large-scale atmospheric circulation and how it may respond to future climate change. Contributions including, but not limited to, the ITCZ, monsoons, jet streams, storm tracks, extreme weather events, blocking, stationary waves, and atmospheric rivers are highly encouraged.

Primary Convener:  Lei Wang, Harvard University, Cambridge, MA, United States
Conveners:  Simona Bordoni, University of Trento, Trento, Italy, Gang Chen, University of California Los Angeles, Los Angeles, CA, United States and Isla Simpson, National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, Boulder, CO, United States
Primary Liaison:  Kevin M Grise, University of Virginia, Charlottesville, VA, United States
Chairs:  Kevin M Grise, University of Virginia, Charlottesville, VA, United States, Lei Wang, Harvard University, Cambridge, MA, United States, Sean M Davis, University of Colorado / CIRES, Boulder, CO, United States and Paul W. Staten, Indiana University Bloomington, Earth and Atmospheric Sciences, Bloomington, IN, United States
OSPA Liaison:  Kevin M Grise, University of Virginia, Charlottesville, VA, United States
Index Terms:

3305 Climate change and variability [ATMOSPHERIC PROCESSES]
3319 General circulation [ATMOSPHERIC PROCESSES]
3337 Global climate models [ATMOSPHERIC PROCESSES]
3373 Tropical dynamics [ATMOSPHERIC PROCESSES]

Abstracts Submitted to this Session:

Tropical Expansion: Comparison of “Upper” and “Lower” metrics. (Invited) (347345)
Darryn Waugh, Johns Hopkins University, Earth and Planetary Sciences, Baltimore, MD, United States and US CLIVAR tropical width working group
Reconciling Hadley Cell Expansion Trend Estimates in Reanalyses (444518)
Nicholas Davis, Chemical Sciences Division, NOAA Earth System Research Laboratory; Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, Sean M Davis, University of Colorado / CIRES, Boulder, CO, United States and Karen Hepler Rosenlof, NOAA Earth System Research Laboratory, Chemical Sciences Division, Boulder, United States
Exploiting the abrupt 4xCO2 scenario to elucidate tropical expansion mechanisms (347643)
Rei Chemke and Prof. Lorenzo M Polvani, PhD, Columbia University, Department of Applied Physics and Applied Mathematics, New York, United States
The Efficiency of the Hadley Cell Response to Wide Variations in Ocean Heat Transport (447399)
Michael Cameron Rencurrel, University at Albany State University of New York, Department of Atmospheric and Environmental Sciences, Albany, NY, United States and Brian E J Rose, SUNY at Albany, Albany, NY, United States
Revisiting conditions for Hadley cell onset in axisymmetric atmospheres based on absolute vorticity (422979)
Spencer A Hill, UCLA AOS & Caltech GPS, Los Angeles, CA, United States, Simona Bordoni, University of Trento, Trento, Italy and Jonathan Mitchell, University of California Los Angeles, Department of Atmospheric & Oceanic Sciences; Department of Earth, Planetary & Space Sciences, Los Angeles, CA, United States
The Longitudinally Dependent Hadley Circulation - Clustering its Seasonal and Interannual Variability (406082)
Dana Raiter1, Eli Galanti2, Yohai Kaspi2 and Eli Tziperman3, (1)Weizmann Institute of Science, Rehovot, Israel, (2)Weizmann Institute of Science, Earth and Planetary Sciences, Rehovot, Israel, (3)Harvard University, Cambridge, MA, USA., Cambridge, United States
The Hadley Cell and climate variability and change in Mediterranean-type climates (Invited) (393073)
Richard Seager, Lamont-Doherty Earth Observatory, Palisades, NY, United States, Timothy J. Osborn, University of East Anglia, Climatic Research Unit, School of Environmental Sciences, Norwich, NR4, United Kingdom, Yochanan Kushnir, Columbia Univ, Palisades, NY, United States, Isla Simpson, National Center for Atmospheric Research, CGD Laboratory, Boulder, CO, United States, Haibo Liu, Columbia University, Palisades, NY, United States and Jennifer Nakamura, Lamont Doherty Earth Obs, Palisades, NY, United States
Large-scale circulation and precipitation decline in the Mediterranean (380792)
Alexandre Tuel, Massachusetts Institute of Technology, Cambridge, MA, United States and Elfatih A B Eltahir, Massachusetts Institute of Technology, Cambridge, United States

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