IUGG 2011 Symposium on 'Manifestation of anthropogenic forcing and natural variability in the Arctic and Antarctic climate systems'
REMINDER of IUGG in Melbourne Australia : Abstract
submission extended until 1st February.
This is an invitation for abstracts for the joint session
JM-05 "Manifestation of anthropogenic
forcing and natural variability in the Arctic and Antarctic climate systems "
at the XXV International Union of Geodesy and Geophysics (IUGG) General
Assembly -- Earth on the Edge: Science for a Sustainable Planet
When: 28 June - 7 July 2011
Where: Melbourne Convention & Exhibition Centre;
last decade has seen record sea ice-extent minima in the Arctic while the
Antarctic has shown little change in sea ice variability. At the same
time, the Greenland ice sheet, Antarctic Peninsula ice shelves, and West
Antarctic outlet glaciers and surface temperatures are all showing increasing
evidence of a change in behaviour. The combined effects of anthropogenic
forcing and natural variability modes are thus yielding different levels of
response in the atmosphere, ocean and cryospheric components of the two polar
climate systems and a combination of both atmospheric and oceanic drivers are
controlling the cryospheric climate response.
session will look at the contrasting climate responses in atmosphere, ocean and
cryosphere, asking several key questions. 1) Where can we detect the anthropogenic
signal in the polar climate system (e.g. temperature, sea level pressure, sea
ice extent, ocean water mass properties, etc.)? 2) Identifying how the
large-scale natural variability driving the climate system affects these same
climate variables, whether the changes exceed natural variability
“noise” levels in the system, and does reality mirror
model-projected change. 3) Are the main modes of natural
variability influencing the Polar Regions (AO, PDO, SAM and ENSO) themselves
experiencing changes in frequency, strength and patterns due to forcings from
increasing greenhouse gases and changes to ozone and aerosols?
are interested in soliciting papers from the atmospheric, oceanic and
cryospheric communities, from observational, theoretical and modelling
perspectives, addressing these questions and the role of natural variability
and/or anthropogenic signals in individual climate components, or across the
Review: All contributed abstracts will be reviewed by the
Options: Accepted abstracts will be presented as either
oral or posters as determined by the convenors.
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