A078
Polar amplification and its connection to lower-latitude weather and climate

Session ID#: 158415

Session Description:
Polar amplification is a prominent feature of climate change. It is closely associated with sea ice loss and may have implications to weather and climate globally. The Polar Amplification Model Intercomparison Project (PAMIP) is a coordinated set of model experiments, designed to advance understanding of the causes and effects of polar amplification. The goal of this session is to synthesize our current understanding of polar amplification, harnessing the PAMIP multi-model ensemble. Contributions from the following topics are encouraged: 1) What are the relative roles of atmospheric teleconnections versus local processes in causing Arctic and Antarctic sea ice loss and driving polar amplification? 2) How do the changes in polar sea ice impact the weather and climate in the lower latitudes, and via what mechanisms? We welcome studies using the PAMIP experiments, and also invite contributions from both idealized and comprehensive modeling studies, as well as observational/theoretical analyses.
Index Terms:

1621 Cryospheric change [GLOBAL CHANGE]
1626 Global climate models [GLOBAL CHANGE]
3305 Climate change and variability [ATMOSPHERIC PROCESSES]
3319 General circulation [ATMOSPHERIC PROCESSES]

Primary Convener:  Lantao Sun, Colorado State University, Department of Atmospheric Science, Fort Collins, CO, US
Conveners:  James Screen, University of Exeter, Exeter, United Kingdom, Yutian Wu, New York University, New York, United States and Qinghua Ding, University of California Santa Barbara, Santa Barbara, CA, United States
 
The Changing Influence of Arctic Cyclones on the Atmosphere and Sea Ice Under Polar-Amplified Warming (Invited) (1050874)
Robin Patrick Clancy, University of Washington Seattle Campus, Atmospheric Sciences, Seattle, WA, United States, Cecilia M Bitz, University of Washington, Dept. of Atmospheric Sciences, Seattle, WA, United States, Edward Blanchard-Wrigglesworth, University of Washington, Seattle, WA, United States and Linh Vu, University of Washington Seattle Campus, Seattle, WA, United States
 
“Warm Arctic Cold Eurasia”: A Weak and Non-robust Influence from Arctic Sea Ice Melting in Climate Models (1051876)
Cheng Zheng1, Yutian Wu2, Mingfang Ting2 and Pengfei Zhang3, (1)Columbia University, Lamont-Doherty Earth Observatory, Palisades, United States, (2)Lamont-Doherty Earth Observatory of Columbia University, Palisades, United States, (3)Pennsylvania State University Main Campus, Department of Meteorology and Atmospheric Sciences, University Park, United States
 
Two regimes liking the low-latitude convection amomalies to extreme sea ice loss events in the Arctic (1060174)
Yinglin Tian1, Yu Zhang1, Deyu Zhong1, Tiejian Li2, Mingxi Zhang1, Di Xie1 and Guangqian Wang2, (1)Tsinghua University, Beijing, China, (2)Tsinghua University, State Key Laboratory of Hydroscience and Engineering, Beijing, China
 
Weakening of Indian Summer Monsoon Synoptic Activity as a Result of the Melting of the Polar Sea Ice (1094408)
Varunesh Chandra1, Sandeep Sukumaran1, E Suhas2 and Aneesh Subramanian3, (1)Indian Institute of Technology Delhi, Centre for Atmospheric Sciences, New Delhi, India, (2)Indian Institiute of Science Education and Research Pune, Earth and Climate Sciences, Pune, India, (3)University of Colorado at Boulder, Department of Atmospheric and Oceanic Sciences, Boulder, United States
 
Seasonality in Poleward Atmospheric Heat Transport Under Increased CO2 (1100658)
Lily Hahn, University of Washington, Seattle, United States, Kyle Armour, University of Washington, Dept. of Atmospheric Sciences and School of Oceanography, Seattle, United States and David Battisti, University of Washington, Dept. of Atmospheric Sciences, Seattle, WA, United States
 
Contribution of Ural and Kamchatka Blockings to the Amplified Warm Arctic–Cold Eurasia Pattern under Arctic Sea Ice Loss and Eurasian Cooling (1101799)
Seon-Hwa Kim, Pukyong National University, Busan, South Korea, Hyun-Joon Sung, Pukyong National University, Busan, Korea, Republic of (South), Seong-Joong Kim, Korea Polar Research Institute, Division of Atmospheric Sciences, Incheon, Korea, Republic of (South), Eun-Hyuk Baek, Chonnam National University, Gwangju, South Korea, Jayeon Moon, Research Institute, 4D Solution Co., Ltd., Seoul, South Korea and Baek-Min Kim, Pukyong National University, Pusan, South Korea
 
The Response of the Northern Hemisphere Midlatitude Jet and Atmospheric Waves to Arctic Amplification in Idealised General Circulation Model Experiments (1104982)
Neil Lewis1, Ruth Geen2, Regan Mudhar1, William J. M. Seviour1, Stephen Thomson1, Geoffery K Vallis1 and James Screen1, (1)University of Exeter, Exeter, United Kingdom, (2)University of Birmingham, Birmingham, United Kingdom
 
Effects of artificial heat added by sea ice perturbation methods (1113724)
Paul J Kushner, University of Toronto, Physics, Toronto, ON, Canada and Luke Fraser-Leach, University of Toronto, Toronto, ON, Canada
 
The efficiency of poleward heat transport and its role in polar amplification (1121743)
Brian E J Rose, University at Albany State University of New York, Department of Atmospheric & Environmental Sciences, Albany, United States and Christopher Cardinale, University at Albany State University of New York, Albany, NY, United States
 
Understanding the Response of Northern Hemisphere Winter Circulation Waviness to Climate Change (1122977)
Gang Chen, University of California Los Angeles, Department of Atmospheric and Oceanic Sciences, Los Angeles, CA, United States, Yu Nie, China Meteorological Administration, Beijing, China, Jian Lu, Pacific Northwest National Laboratory, Richland, WA, United States, Wenyu Zhou, Pacific Northwest National Laboratory, Richland, United States and Yang Zhang, Nanjing University, Nanjing, China
 
Reconciling Conflicting Evidence for the Cause of the Observed Early 21st Century Eurasian Cooling (Invited) (1123696)
Camille Li1,2, Stephen Outten3, Martin P. King2, Lingling Suo3, Peter Siew4, Richard Davy3, Etienne Dunn-Sigouin5, Shengping He6, Ho Nam Cheung2, Erica Madonna1, Tore Furevik1, Stefan Sobolowski7, Thomas Spengler2 and Tim Woollings8, (1)Bjerknes Centre for Climate Research, Bergen, Norway, (2)University of Bergen, Bergen, Norway, (3)Nansen Environmental and Remote Sensing Center, Bergen, Norway, (4)University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway, (5)Columbia University of New York, Palisades, United States, (6)University of Bergen, Department of Geoscience, The Faculty of Mathematics and Natural Sxiences, Norway, Bergen, Norway, (7)Uni Research Climate & Bjerknes Centre for Climate Research, Bergen, Norway, (8)University of Oxford, Dept. of Physics, Oxford, United Kingdom
 
Identifying, Tracking, and Evaluating Changes in North American Cold Air Outbreaks using a Lagrangian Approach (1124087)
Jack Stone, Melissa Gervais and Colin M. Zarzycki, Pennsylvania State University, Department of Meteorology and Atmospheric Science, University Park, United States
 
Wavier jet streams driven by zonally-asymmetric surface thermal forcing (1139244)
Woosok Moon1, Baek-Min Kim2, Gun-Hwan Yang1 and John S. Wettlaufer3, (1)Pukyong National University, Busan, Korea, Republic of (South), (2)Pukyong National University, Pusan, South Korea, (3)Yale University, New Haven, CT, United States
 
Response of the large-scale atmosphere on zonally-asymmetric surface thermal forcing under the influence of the Arctic amplification (1139804)
Gun-Hwan Yang, Pukyong National University, Busan, Korea, Republic of (South), Woosok Moon, YALE UNIVERSITY, New Haven, CT, United States and Baek-Min Kim, Pukyong National University, Pusan, South Korea
 
Distinct Impacts of Two Types of El Niño Events on Northern Winter High-latitude Temperatures Simulated by CMIP6 Models (1140138)
Sangwoo Lee, Hyo Seok Park, Se-Yong Song and Sang-Wook Yeh, Hanyang University, Department of Marine Sciences and Convergent Technology, Ansan, South Korea
 
Arctic Sea Ice Loss Weakens Northern Hemisphere Summertime Circulation Due to Ocean Coupling (1140299)
Joonsuk Kang1, Tiffany Shaw1 and Lantao Sun2, (1)The University of Chicago, Department of Geophysical Sciences, Chicago, IL, United States, (2)Colorado State University, Department of Atmospheric Science, Fort Collins, CO, United States
 
Seasonal Dependency of Hadley Circulation Responses to High-Latitude Forcing (1140568)
Yung-Jen Chen, National Taiwan University, Taipei, Taiwan, Yen-Ting Hwang, National Taiwan University, Department of Atmospheric Sciences, Taipei, Taiwan and John Chiang, UC Berkeley, Geography, Berkeley, CA, United States
 
Modelling Arctic Amplification Response: using a Simplified International Centre for Theoretical Physics - Atmospheric General Circulation Model (ICTP-AGCM) (1148913)
Michael Oyelakin, Purdue University, West Lafayette, IN, United States, Fred Kucharski, Abdus Salam International Center for Theoretical Physics, Earth Physics Section, Trieste, Italy and Muhammad Adnan Abid, Abdus Salam International Center for Theoretical Physics, Earth System Physics, Trieste, Italy
 
Investigating the Fast Timescales of Polar Amplification (1151717)
Tyler Paul Janoski1,2,3, Michael J Previdi3, Gabriel Chiodo4, Karen Smith5 and Lorenzo M Polvani6, (1)Columbia University, Earth & Environmental Sciences, New York, United States, (2)Lamont-Doherty Earth Observatory, Palisades, United States, (3)Columbia University, Lamont‐Doherty Earth Observatory, Palisades, United States, (4)ETH Zürich, Institute for Atmospheric and Climate Sciences, Zurich, Switzerland, (5)University of Toronto, Toronto, Canada, (6)Columbia University, Department of Applied Physics and Applied Mathematics, New York, NY, United States
 
Impact of Future Sea Ice Loss on Large-Scale Patterns of Atmospheric Variability (1158025)
Melissa Gervais, Pennsylvania State University Main Campus, Meteorology and Atmospheric Science, University Park, PA, United States, Samantha Staskiewicz, Pennsylvania State University Main Campus, University Park, PA, United States, Lantao Sun, Colorado State University, Department of Atmospheric Science, Fort Collins, CO, United States and Clara Deser, National Center for Atmospheric Research, Climate and Global Dynamics Division, Boulder, CO, United States
 
The Atmospheric Response to the Weddell Sea Polynya (1164374)
Holly Ayres, University of Reading, Reading, RG6, United Kingdom, David Ferreira, University of Reading, Reading, United Kingdom and Wonsun Park, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
 
Air mass excursions and pole-to-midlatitude dynamical connection (1168633)
Noboru Nakamura, University of Chicago, Department of the Geophysical Sciences, Chicago, IL, United States
 
Sea Ice Perturbations in Aquaplanet Simulations: Isolating the Physical Climate Responses From Model Interventions (1183540)
Mark England and Nicole Feldl, University of California Santa Cruz, Santa Cruz, CA, United States
 
Convenient Untruths — How We Underestimate Arctic Warming and How We Can Stop (1195179)
Peter Jacobs, NASA Goddard Space Flight Center, Greenbelt, MD, United States, Nathan J L Lenssen, NASA Goddard Institute for Space Studies, New York, United States and Gavin A Schmidt, NASA/GISS, New York, United States
 
The Role of Moisture in Polar Amplification (1198083)
Po-Chun Chung, Santa Cruz, California, UNITED STATES and Nicole Feldl, University of California Santa Cruz, Santa Cruz, CA, United States
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