A53N:
The Tropical Versus Polar "Tug of War" on the Atmospheric General Circulation Response to Climate Change II Posters


Submit an Abstract to this Session


Session ID#: 45445

Session Description:
A recurrent theme in the recent dynamical literature is that tropical warming strengthens the subtropical to extratropical atmospheric circulation and moves it poleward, while polar warming weakens the circulation and moves it equatorward.  Thus, the full response of the global and regional circulation to climate change is an uncertain struggle between these opposing forces.  We invite submissions that enhance understanding of this atmospheric "tug of war."

Observational, modeling, theoretical, and statistical approaches are all welcome, as well as studies on any climate timescale - from interannual/decadal variability to global warming and paleoclimate change.  We also encourage submissions that address drivers of the polar-tropical warming contrast (e.g. feedbacks, forcings, or ocean/sea-ice processes); consequences of the resulting circulation changes for storms, weather extremes or the water cycle; and/or insights from model hierarchies (e.g. slab-ocean vs. full-ocean, or moist vs. dry).  Submissions solely addressing polar or tropical influences will also be considered.

Primary Convener:  Jacob Scheff, University of North Carolina at Charlotte, Charlotte, NC, United States
Conveners:  Elizabeth Maroon, National Center for Atmospheric Research, Boulder, CO, United States, Natalie Burls, George Mason University, Atmospheric, Oceanic and Earth Sciences, Fairfax, VA, United States and Paulo Ceppi, Imperial College London, Physics, London, United Kingdom
Primary Liaison:  Jacob Scheff, University of North Carolina at Charlotte, Charlotte, NC, United States
Chairs:  Jacob Scheff, University of North Carolina at Charlotte, Charlotte, NC, United States and Elizabeth Maroon, National Center for Atmospheric Research, Boulder, CO, United States
OSPA Liaison:  Jacob Scheff, University of North Carolina at Charlotte, Charlotte, NC, United States

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

1620 Climate dynamics [GLOBAL CHANGE]
1630 Impacts of global change [GLOBAL CHANGE]
3305 Climate change and variability [ATMOSPHERIC PROCESSES]
3319 General circulation [ATMOSPHERIC PROCESSES]

Abstracts Submitted to this Session:

Dynamics matter: The partitioning of poleward energy transport and its changes from the Last Glacial Maximum to CO2 quadrupling in coupled global climate models (421499)
Aaron Donohoe, Applied Physics Laboratory, University of Washington, Seattle, WA, United States, Kyle Armour, University of Washington, Deptartment of Atmospheric and Climate Science, Seattle, United States, Gerard Roe, University of Washington, Seattle, United States and David S Battisti, University of Washington, Department of Atmospheric Sciences, Seattle, WA, United States
Response of winter mid-latitude circulation to East Siberia and Chukchi Sea sea ice loss in an idealized model (373781)
Bithi De, Purdue University, West Lafayette, IN, United States; Lamont-Doherty Earth Observatory of Columbia University, New York, NY, United States and Yutian Wu, Lamont-Doherty Earth Observatory, Palisades, NY, United States
La Nina-like mean state drives winter extremes in North America (402687)
Mi-Kyung Sung, Ewha Womans University, Seoul, Korea, Republic of (South), Baek-Min Kim, KOPRI Korea Polar Research Institute, Incheon, South Korea, Sang-Wook Yeh, Hanyang University, ERICA, Department of Marine Science and Convergence Engineering, Ansan, South Korea and Changhyun Yoo, Ewha Womans University, Climate and Energy Systems Engineering, Seoul, South Korea
Global Implications of Arctic Sea Ice Retreat (426642)
Elena Yulaeva, University of California San Diego, La Jolla, CA, United States and Charles F Kennel, Scripps Institution of Oceanography, La Jolla, CA, United States
The Pacific Decadal Oscillation (PDO) modulation due to Arctic sea ice loss (428831)
Hyerim Kim, Hanyang University, Department of Marine Sciences and Convergent Technology, Seoul, South Korea, Sang-Wook Yeh, Hanyang University, ERICA, Department of Marine Science and Convergence Engineering, Ansan, South Korea and Soon-Il An, Department of Atmospheric Sciences, Yonsei University, Seoul, South Korea
The interplay between polar and tropical radiative forcing resulting from changes in Earth's obliquity (431153)
Anthony J Broccoli, Rutgers University New Brunswick, New Brunswick, NJ, United States and Grainne O'Neill, Rutgers University New Brunswick, Graduate Program in Atmospheric Science, New Brunswick, NJ, United States
An Analytical Model for the Meridional Gradient in CO2 Forcing (439381)
Nadir Jeevanjee1, Jacob Thomas Seeley2, David Paynter3 and Stephan Fueglistaler1, (1)Princeton University, Princeton, United States, (2)University of California Berkeley, Berkeley, CA, United States, (3)NOAA/ Geophysical Fluid Dynamics Laboratory, Princeton, United States
Do the Physical Mechanisms that Explain the Lapse Rate Response to Warming also Explain the Response to Cooling? (439815)
Osamu Miyawaki, National Center for Atmospheric Research, Boulder, United States, Tiffany Shaw, The University of Chicago, Chicago, United States and Malte Jansen, University of Chicago, Department of the Geophysical Sciences, Chicago, United States
Do CMIP5 climate models agree on warming of the atmosphere with latitude and height? (452580)
Nicholas Golden and Jacob Scheff, University of North Carolina at Charlotte, Charlotte, NC, United States
The importance of the North Atlantic warming hole for future changes in the variability of the North Atlantic jet (454772)
Melissa Gervais, Pennsylvania State University Main Campus, Meteorology and Atmospheric Science, University Park, PA, United States, Jeffrey L Shaman, Columbia University of New York, Mailman School of Public Health, Department of Environmental Health Sciences, New York, United States and Yochanan Kushnir, Columbia Univ, Palisades, NY, United States
Does Polar Surface Warming Pushes Extratropical Circulation Equatorward? A Revisit Using Idealized Hierarchy Models (402962)
Licheng Geng, University of Hawaii at Manoa, Honolulu, HI, United States

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