A043:
Extratropical Large-Scale Atmospheric Circulation Variability





Session ID#: 23647

Session Description:
The extratropical atmospheric circulation is characterized by large-scale variability patterns such as blocking events, large-amplitude/quasi-stationary planetary waves, and annular modes. The midlatitude variability is important to the extratropical weather (and weather extremes), as well as the interaction of the extratropical troposphere with the tropics, stratosphere, ocean, and cryosphere. While widely studied, many questions remain unanswered about the dynamics, predictability, and climate projections of the extratropical atmospheric variability, and current weather/climate models have difficulties faithfully reproducing some of the observed behavior.

The goal of this session is to synthesize observational, hierarchical modeling, and theoretical studies of various aspects of this variability such as the associated dynamics, sources of predictability, responses to climate change, and connections with weather extremes. A deeper understanding will improve weather predictions on sub-seasonal and longer timescales, and help with interpreting regional responses to climate change. These are active areas of research with significant scientific and socio-economic impacts.

Primary Convener:  Ding Ma, Columbia University of New York, Earth Institute, Palisades, NY, United States
Conveners:  Elizabeth A Barnes, Colorado State University, Fort Collins, CO, United States, Pedram Hassanzadeh, Rice University, Department of Mechanical Engineering, Houston, TX, United States and Ji Nie, Columbia University of New York, Lamont Doherty Earth Observatory, Palisades, NY, United States

Cross-Listed:
  • C - Cryosphere
  • H - Hydrology
  • OS - Ocean Sciences
Index Terms:

1616 Climate variability [GLOBAL CHANGE]
1620 Climate dynamics [GLOBAL CHANGE]
3305 Climate change and variability [ATMOSPHERIC PROCESSES]
3319 General circulation [ATMOSPHERIC PROCESSES]

Abstracts Submitted to this Session:

Michael Goss, Stanford Earth Sciences, Stanford, CA, United States; The Pennsylvania State University, University Park, PA, United States, Sukyoung Lee, Penn State University, University Park, PA, United States, Steven B Feldstein, Penn St Univ, University Park, PA, United States and Noah S Diffenbaugh, Department of Environmental Earth System Science and Woods Institute for the Environment, Stanford University, Stanford, CA, United States
Lilan Chen, Xiu-Qun Yang and Jiabei Fang, Nanjing University, Nanjing, China
Junsu Kim, Taekyu Jang, Jincheol Kim and Yoonjae Kim, KMA Korea Meteorological Administration, Seoul, South Korea
Tao Lingfeng, Xiu-Qun Yang and Xuguang Sun, Nanjing University, Nanjing, China
Xiu-Qun Yang, Liying Wang and Jiabei Fang, Nanjing University, Nanjing, China
Paul Hezel, University of Bergen, Bergen, Norway and Camille Li, Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway
Qigang Wu1, Yonghong Yao1 and Shizuo Liu2, (1)Nanjing University, School of Atmospheric Sciences, Nanjing, China, (2)Nanjing University, Nanjing, AL, China
Andrea M Jenney and David A Randall, Colorado State University, Atmospheric Science, Fort Collins, CO, United States
David J Lorenz, Center for Climatic Research, Madison, WI, United States
Yang Zhang1, Yu Nie2, Gang Chen3 and Xiu-Qun Yang1, (1)Nanjing University, Nanjing, China, (2)Beijing Climate Center, China Meteorological Administration, Beijing, China, (3)Cornell University, Ithaca, NY, United States
Noboru Nakamura, University of Chicago, Department of Geophysical Sciences, Chicago, IL, United States and Shao Ying Huang, University of Chicago, Department of the Geophysical Sciences, Chicago, IL, United States
Yonghong Yao, Nanjing University, School of Atmospheric Sciences, Nanjing, China, Hai Lin, Environment Canada, Meteorological Research Division, Science & Technology Branch, Dorval, QC, Canada and Qigang Wu, Nanjing University, Nanjing, China
Bradford Barrett1, Alexander R Davies1, Cecily N Steppe2 and Colin Hackbarth1, (1)US Naval Academy, Oceanography, Annapolis, MD, United States, (2)US Naval Academy, Annapolis, MD, United States
Erica Madonna1,2, Camille Li1,2, Christian M. Grams3 and Tim Woollings4, (1)University of Bergen, Geophysical Institute, Bergen, Norway, (2)Bjerknes Centre for Climate Research, Bergen, Norway, (3)ETH Zurich, Institute for Atmospheric and Climate Science, Zurich, Switzerland, (4)University of Oxford, Dept. of Physics, Oxford, United Kingdom
Yannick Peings, University of California Irvine, Earth System Science, Irvine, CA, United States, Gudrun Magnusdottir, University of California Irvine, Irvine, CA, United States and Julien Cattiaux, CNRM-GAME, Toulouse Cedex 01, France
Kevin Bowley, John R Gyakum and Eyad Atallah, McGill University, Montreal, QC, Canada
Jiabei Fang, Nanjing University, Nanjing, China
Jeremy Garmeson Fyke, Los Alamos National Laboratory, Los Alamos, NM, United States, Jan Lenaerts, University of Colorado at Boulder, Boulder, CO, United States and Hailong Wang, Pacific Northwest National Laboratory, Richland, WA, United States
Pedram Hassanzadeh, Rice University, Houston, TX, United States, Ding Ma, Columbia University of New York, Earth Institute, Palisades, NY, United States and Zhiming Kuang, Harvard Univ, Cambridge, MA, United States
David W J Thompson, Colorado State University, Fort Collins, CO, United States
José M. Castanheira, Universidade de Aveiro, Aveiro, Portugal and Carlos A F Marques, University of Aveiro, Aveiro, Portugal
Aditi Sheshadri, Columbia University of New York, White Plains, NY, United States and Raymond Alan Plumb, MIT, Dept.of Earth Atmospheric and Planetary Sciences, Cambridge, MA, United States
Lukas Brunner1, Nathalie Schaller2, Jana Sillmann2 and Andrea Karin Steiner3, (1)University of Graz, Wegener Center, Graz, Austria, (2)Center for International Climate and Environmental Research Oslo, Oslo, Norway, (3)University of Graz, Graz, Austria
Chaoxia Yuan, Nanjing, China, Wenmao Li, Nanjing University of Information Science & Technology, Nanjing, China and Zhaoyong Guan, NUIST Nanjing University of Information Science and Technology, Nanjing, China