Antarctic Sea Ice Workshop Agenda

Public Agenda and Workshop Presentations



MONDAY JANUARY 11, 2016 

SESSION 1– The Big Picture: Patterns and Drivers of Antarctic Sea Ice Variability


8:45 A.M. BIG PICTURE PANEL


Sharon Stammerjohn, INSTAAR/University of Colorado, Boulder
Patterns of Antarctic Sea Ice Variability: Observational Insights, Gaps, and Challenges

Cecilia Bitz, University of Washington
Understanding Antarctic Climate Change: How Are We Led and Misled By Models?

Will Hobbs, University of Tasmania
Drivers and Forcings of Observed Southern Ocean Sea Ice Change


10:05 A.M. Discussion
10:35 A.M. Break



SESSION 2 –The Observational Record: Insights and Gaps


Key session questions:
• What does the observational record of Antarctic sea ice extent tell us about sea ice variability and recent trends?
• How do other observations inform our understanding?
• What are the key uncertainties in the observational record?
• What additional observations are critical for improving our understanding of sea ice and its role in the coupled system?


10:50 A.M. OBSERVATIONS PANEL

Rob Massom, Australian Antarctic Division
Antarctic Sea Ice Observations: Background

Nathan Kurtz, NASA-GSFC
Contribution of Antarctic Sea Ice Thickness Observations to Understanding of Sea Ice Volume Change

Michael Meredith, British Antarctic Survey
Ocean Observations and Antarctic Sea Ice

David Bromwich, Ohio State University
Atmospheric Observations 
Over the Antarctic Sea Ice Zone 


Sarah Das, Woods Hole Oceanographic Institute
Antarctic Sea Ice Variability and Trends Prior to the Observational Era

11:35 A.M. Opportunity for 2-minute "speed-talks" related to Observations
Steve Ackley
Ronald Kwok
David Bromwich
Claire Parkinson

11:50 A.M. Discussion
12:20 P.M. Working lunch
1:00 P.M. Breakout groups
1:50 P.M. Break
2:10 P.M. Report back from breakout group discussions
3:00 P.M. Break

 

SESSION 3 -Sea Ice Variability in Earth System Models

 

Key session questions:
• What insights do modeling studies offer regarding the drivers of Antarctic sea ice variability and recent trends?

• What are the current discrepancies between models and observations, and what are possible reasons for such differences?
• What do models portend about the future of sea ice in Antarctica?
• What is needed to improve model representation of sea ice variability?

3:15 P.M. MODELING PANEL


Clara Deser, National Center for Atmospheric Research
Modeling Approaches to Understanding Antarctic Sea Ice Variability and Trends

Lorenzo Polvani, Columbia University
Using Global Climate Models to Understand Recent Antarctic Sea Ice Trends

John Fyfe, Environment and Climate Change Canada
Have the Surface Westerlies Changed?

Hughes Goosse, Université de Louvain
Antarctic Sea Ice Variability and Trends: The Role of the Ocean


3:55 P.M. 2-minute “speed talks” related to modeling

Elizabeth Hunke
Jennifer Kay
Laura Landrum
Katy Burnhardt

4:10 P.M. Discussion
4:40 P.M. Breakout groups
5:30 P.M. Adjourn and Reception


TUESDAY, JANUARY 12, 2016

SESSION 4 - Process and Attribution Studies of the Coupled System

 


Key session questions:
• What is the contribution of tropical ocean-atmosphere variability to Antarctic sea ice variability and trends?
• How does the Southern Ocean and ice shelf melt influence sea ice?
• What is the role of atmospheric phenomena such as the Amundsen Sea Low (ASL)?
• What is the role of anthropogenic forcing (GHG, ozone)?
• What is the role of natural climate variability?
• What are the key gaps in our understanding of recent sea ice change, and what are the key challenges and opportunities for addressing these gaps?

9:35 A.M. TROPICAL-POLAR CONNECTIONS PANEL


Graham Simpkins, University of California, Irvine
Tropical Pacific Teleconnections to the Southern Hemisphere High Latitudes

Xichen Li, Scripps Institution of Oceanography, UC San Diego
Rossby and Kelvin Waves Link the Atlantic SST and Antarctic Sea Ice

David Schneider, National Center for Atmospheric Research
The Role of Tropical Teleconnections in Recent Antarctic Climate Change


10:05 A.M. Discussion


10:25 A.M. OCEAN-SEA ICE AND OCEAN-SHELF ICE-SEA ICE INTERACTIONS PANEL


Doug Martinson, Lamont-Doherty Earth Observatory
Antarctic Ocean-Sea Ice Interactions

David Ferreira, University of Reading
Two-timescale Response of the Antarctic Ocean and Sea Ice to Ozone Depletion

Kyle Armour, University of Washington
The Ocean's Role in Southern Ocean Climate Change


10:55 A.M. Discussion
11:15 A.M. Break

11:30 A.M. ATMOSPHERE-SEA ICE INTERACTIONS AND ANTHROPOGENIC FORCING PANEL


Ryan Fogt, Ohio University
The Role of Anthropogenic Forcing and Natural Variability on Southern Hemisphere Atmospheric Circulation Trends

Alexander Haumann, ETH-Zürich
Dependence of Antarctic Sea-Ice Trends on Zonally Asymmetric Atmospheric Circulation Changes and Ocean Stratification

Paul Holland, British Antarctic Survey
The Seasonality of Antarctic Sea-Ice Trends


12:00 P.M. Opportunity for 2-minute “speed talks” related to processes and attribution
Katherine Leonard
Will Hobbs
Xichen Li
Alexander Haumann
Ryan Walker
Lynne Talley
Xiaojun Yuan
Paul Holland
Rob Massom
Sharon Stammerjohn

12:15 P.M. Discussion
12:45 P.M. Working Lunch
1:30 P.M. Breakout groups
2:20 P.M. Break
2:40 P.M Report back from breakout group discussions
3:30 P.M. Wrap up and final remarks
3:45 P.M. Open workshop adjourns