1. CLIVAR/CliC/SCAR Southern Ocean Region Implementation Panel
Members
Ian Renfrew - co-chair
Kevin Speer - co-chair
Aike Beckmann
Yasushi Fukumachi
Hugues Goosse
Niki Gruber
Christian Hass
Ex-Officio members:
Eberhard Fahrbach
Alex Orsi
Doug Martinson
Alberto Naveira Garabato
Steve Rintoul
Sabrina Speich
Dave Thompson
Michiel van den Broeke Mike Sparrow, IPO

2. Modes of SH Climate Variability
Scott Polar Research Institute, Cambridge UK, June 2005
D. Thompson: The mean state of the southern hemisphere atmosphere
N. Gillett: Human influences on the southern annular mode
G Marshall: Southern hemisphere annular mode indices
I. Wainer: Southern Ocean Modes of Climate Variability - Representation in models and their Impact on Regional Climate
D. Bromwich: Decadal variability of the Antarctic-Enso teleconnection and its association with the Southern Annular Mode
X. Yuan: The impact of high latitude climate modes on Antarctic sea ice
J. Turner: Links between the Antarctic and the rest of the climate system
P. Mayewski: Calibrated ice core derived climate proxies
M. Meredith: Circumpolar ocean transport response to forcing by the Southern Annular Mode
A. Beckmann: Ice-ocean modes in the Antarctic marginal seas
M. Drinkwater: Modes of Antarctic Sea Ice Drift Variability, and their connection to atmosphere-ocean modes

3. Modes of SH Climate Variability
M. Van den Broeke: The semi-annual oscillation in the southern hemisphere and its influence on temperature and sea ice
A. Stoessel: The role of Southern Ocean sea ice and convection on the mean state and variability of the global deep ocean
A. Orsi and S. Osterhus: Antarctic Bottom Water variability and sensitivity to change.
S. Stark: Southern Ocean variability and climate change in HadCM3
Results reported in next issue of CLIVAR Exchanges.

4. Status of Southern Ocean Observations

5. MAY 2004
NOV 2005

7. Climate of Antarctica and the Southern Ocean (CASO)
S. Rintoul, E. Fahrbach and I. Renfrew
on behalf of the CLIVAR/CliC/SCAR Southern Ocean Panel

8. Climate research themes for the IPY
Antarctica and the Southern Ocean in the global water cycle
Southern hemisphere teleconnections
Climate processes at the Antarctic continental margin
Climate – ecosystem – biogeochemistry interactions in the Southern Ocean
Records of past Antarctic climate variability and change

9. Tackling key unknowns:
CASO will:
Obtain the first circumpolar snapshot of the Southern Ocean, including physical, ecological and biogeochemical properties.
Measure the circumpolar extent and thickness of Antarctic sea ice through an annual cycle for the first time.
Observe the sub-ice ocean circulation, water mass properties and biological distributions

10. IPY Observing System: Synoptic multi-disciplinary transects
Sea ice volume
Enhanced sea ice drifter array
Ocean circulation under sea ice
Enhanced Southern Ocean Argo
Enhanced meteorological measurements
Ice cores from high accumulation rate coastal sites
Process studies

12. SASSI
Synoptic Antarctic Shelf-Slope Interactions Study

14. Recommendations:
Maintain a focus on the Southern Ocean (thank you for an excellent workshop)
Get involved in IPY-related modelling studies
“What if….?” experiments
Beware of single-hemisphere expts