A53F:
Tropical Circulations and Their Sensitivities to Changes in Climate II Posters

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Session ID#: 12376

Session Description:
Tropical atmospheric circulations strongly influence Earth’s climate, both locally and globally, via their transports of energy, moisture, and momentum, and their shaping of cloud and water vapor distributions. These circulations respond to changes in climate and the ocean circulation with, for example, large shifts in the location of the ITCZ found in the paleoclimate record and a weakening of the Hadley and Walker circulations expected as the climate warms. However, there is only limited understanding of the physical mechanisms responsible for these changes, and the sensitivities to changes in climate of other components of the tropical circulation, such as monsoons, are even less constrained. The objective of this session is to advance our mechanistic understanding of the various dynamical components of the tropical circulation and how they respond to past and future climate change. We encourage theoretical, observational, and modeling contributions on this topic.
Primary Convener:  Michael Byrne, ETH Zurich, Zurich, Switzerland
Conveners:  Spencer A Hill, Princeton University, Princeton, United States, Elizabeth Maroon, University of Wisconsin Madison, Madison, WI, United States and Brian Green, Massachusetts Institute of Technology, Cambridge, MA, United States
Chairs:  Brian Green, Massachusetts Institute of Technology, Cambridge, MA, United States and Elizabeth Maroon, University of Wisconsin Madison, Madison, WI, United States
OSPA Liaison:  Elizabeth Maroon, University of Wisconsin Madison, Madison, WI, United States

Cross-Listed:
  • GC - Global Environmental Change
  • OS - Ocean Sciences
  • PP - Paleoceanography and Paleoclimatology
Index Terms:

3305 Climate change and variability [ATMOSPHERIC PROCESSES]
3319 General circulation [ATMOSPHERIC PROCESSES]
3339 Ocean/atmosphere interactions [ATMOSPHERIC PROCESSES]
3373 Tropical dynamics [ATMOSPHERIC PROCESSES]

Abstracts Submitted to this Session:

The direct effects of black carbon on tropical cyclone statistics (132021)
Xin Rong Chua, Princeton University, Princeton, NJ, United States, Yi Ming, Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States and Ming Zhao, University Corporation for Atmospheric Research, Boulder, CO, United States
Contrasting responses of the Hadley circulation to equatorially asymmetric and symmetric meridional sea surface temperature structures (134721)
Juan Feng, BNU Beijing Normal University, Beijing, China
Understanding Atmospheric Adjustment to Variations in Tropical Ocean Heat Transport (135730)
Michael Cameron Rencurrel, University at Albany State University of New York, Atmospheric and Environmental Sciences, Albany, NY, United States; University at Albany State University of New York, Department of Atmospheric and Environmental Sciences, Albany, NY, United States and Brian E J Rose, University at Albany State University of New York, Department of Atmospheric & Environmental Sciences, Albany, NY, United States
Contrasting Upper and Lower Atmospheric Metrics of Tropical Expansion (140976)
Abraham L Solomon1, Prof. Lorenzo M Polvani, PhD1, Darryn Waugh2 and Sean M Davis3, (1)Columbia University of New York, Palisades, NY, United States, (2)Johns Hopkins University, Earth and Planetary Sciences, Baltimore, MD, United States, (3)University of Colorado / CIRES, Boulder, CO, United States
The role of water vapor in the ITCZ response to hemispherically asymmetric forcings (145665)
Spencer Clark, Allen Institute for AI, Seattle, United States, Yi Ming, Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States and Isaac Held, NOAA Princeton, Princeton, NJ, United States
Future change of Hadley Circulation intensity in CMIP5 models (155892)
Go-Un Kim, Korea Institute of Ocean Science and Technology, Busan, South Korea, Kyong-Hwan Seo, Research Center for Climate Sciences, Pusan National University, Busan, South Korea and Bin Wang, Pusan National University, Busan, United States
The Ocean's Role in Damping ITCZ Shifts (161428)
Brian Green, Massachusetts Institute of Technology, Cambridge, MA, United States and John C Marshall, Massachusetts Institute of Technology, Cambridge, United States
The Hadley Circulation's Response to Imposed Idealized Ocean Heat Transport in an Aquaplanet GCM (162080)
Casey Hilgenbrink, University of Washington Seattle Campus, Atmospheric Sciences, Seattle, WA, United States and Dennis L Hartmann, University of Washington, Seattle, WA, United States
What Determines the Meridional Heat Transport? Insights from Varying Rotation Rate Experiments (169708)
Xiaojuan Liu1, David S Battisti2 and Gerard Roe1, (1)University of Washington Seattle Campus, Seattle, WA, United States, (2)University of Washington, Department of Atmospheric Sciences, Seattle, WA, United States
Reexamination of the concept of "Walker Circulation" --implication from the variety of large-scale tropical atmospheric response to equatorial SST anomaly in Aquaplanet Experiment -- (173909)
Kensuke Nakajima1, Masahiro Kanda1, Kotarou Takaya2, Masaki Ishiwatari3, Wataru Ohfuchi4, Yoshiyuki O Takahashi5 and Yoshi-Yuki Hayashi5, (1)Kyushu University, Fukuoka, Japan, (2)Kyoto Sangyo University, Kyoto, Japan, (3)Hokkaido University, Sapporo, Japan, (4)Earth Simulator Ctr, Yokohama, Kanagawa, Japan, (5)Kobe University, Kobe, Japan
Understanding monsoon onset using a normalized gross moist stability framework in an idealized model (180486)
Bryce E Harrop, Jian Lu and L. Ruby Leung, Pacific Northwest National Laboratory, Richland, WA, United States
Temperature influence on Hadley cell dynamics (181859)
Sonja Molnos, Potsdam Institute for Climate Impact Research, Potsdam, Germany
Model diversity in future predicted circulation changes in the tropical and extra-tropical Pacific, and their connection. (186805)
Isla Simpson, National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, Boulder, CO, United States
Evaluation of a Simple Theoretical Expression for Hadley Cell Width (186976)
Karlie Rees, University of Utah, Department of Atmospheric Sciences, Salt Lake City, UT, United States, Timothy J Garrett, University of Utah, Atmospheric Science, Salt Lake City, United States, Thomas Reichler, University of Utah, Salt Lake City, UT, United States and Paul W. Staten, Indiana University Bloomington, Earth and Atmospheric Sciences, Bloomington, IN, United States
Using Short-term Hindcast Skill to Add Confidence to the Choice of Uncertain Model Parameter Values in CESM Climate Change Simulations  (187100)
Cecile Hannay1, Richard B Neale2 and Mathew Rothstein2, (1)NSF National Center for Atmospheric Research, Boulder, United States, (2)National Center for Atmospheric Research, Boulder, CO, United States
Hadley circulation strength and width in a wide range of simulated climates (187216)
Roberta D'Agostino1,2, Ori Adam3, Piero Lionello1,2 and Tapio Schneider4,5, (1)University of Salento, Lecce, Italy, (2)CMCC Salento, Lecce, Italy, (3)Hebrew University of Jerusalem, Jerusalem, Israel, (4)California Institute of Technology, Environmental Science and Engineering, Pasadena, United States, (5)ETH Zürich, Geological Institute - Climate Dynamics, Zürich, Switzerland
Are the American monsoons becoming shorter?: Evaluation of CMIP5 simulations and projections (197916)
Paola Andrea Arias1, Maisa Rojas2 and Juan Pablo Boisier2, (1)Universidad de Antioquia, Escuela Ambiental, Grupo de Ingeniería y Gestión Ambiental (GIGA), Medellin, Colombia, (2)University of Chile, Department of Geophysics, Santiago, Chile

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