Multiple Session Announcements and Calls for Abstracts
American Geophysical Union Fall Meeting
14-18 December 2015
San Francisco, California
Abstract submission deadline: 11:59 p.m. Eastern Daylight Time
Wednesday, 5 August 2015
For further information or to submit an abstract, please go to:
http://fallmeeting.agu.org/2015/abstract-submissions
The American Geophysical Union (AGU) is currently accepting abstract
submissions for the 2015 Fall Meeting. The meeting will be held 14-18
December 2015 in San Francisco, California.
Abstract submission deadline for all sessions is 11:59 p.m. Eastern
Daylight Time on Wednesday, 5 August 2015. Specific criteria and
instructions for submitting abstracts are available online, at:
http://fallmeeting.agu.org/2015/abstract-submissions.
Conveners of the following three sessions invite presentations from the
Arctic community:
Session 7845: The Role of Meltwater in Abrupt Climate Change: From
the Arctic to Antarctic
Conveners: Jenna C Hill and Alan Condron
The discharge of meltwater and icebergs to the polar oceans is known to
have a major impact on global ocean circulation and may be critical in
forcing abrupt climate change; however the mechanisms remain unclear.
Recent work has highlighted that meltwater inputs far beyond the North
Atlantic can have a significant effect on global climate. As the
Greenland and Antarctic ice sheets continue melting, it is essential to
understand how changes in freshwater influence ocean circulation and
climate. This session will bring together results from numerical
modeling, instrumental, and proxy studies investigating the role of
freshwater in driving abrupt climate shifts during varying time periods.
We encourage submissions from high-resolution models, new geochemical
proxies, records of iceberg transport and meltwater pathways, and
innovative studies focusing on freshwater forcing in subtropical and/or
tropical latitudes and other far-field sites, including the Arctic,
Antarctic and Pacific, in addition to traditional North Atlantic records.
https://agu.confex.com/agu/fm15/preliminaryview.cgi/Session7845Session 7958: Predictability of Subarctic Weather: Internal
Variability, Teleconnections, and Local Forcing
Conveners: James E Overland, John J Cassano, Jun Inoue, and Thomas Jung
Understanding the potential for subarctic low frequency circulation to
impact mid-latitude extreme weather events is complex, involving
internal variability, direct forcing, and teleconnections. Although
continuing Arctic changes are hypothesized as a source of external
forcing, this is controversial and several authors note mid-latitude and
even equatorial connections to subarctic circulation. One can say that
we are in a pre-consensus period not unlike El Nino research in 1980.
Current synthesis suggests that there will be no net mid-latitude
cooling, only a potential for severe events. Linkages will be regional
and based on amplification of existing weather patterns such as eastern
North American troughing and the Siberian High. Multiple mechanisms
contribute. A Grand Science Challenge on subarctic dynamics together
with additional Arctic observations can improve skill in extended-range
weather forecasts that is the basis of the Year of Polar Prediction
(YOPP).
https://agu.confex.com/agu/fm15/preliminaryview.cgi/Session7958Session 9021: Arctic Change: Exploring the Trajectory Towards
a New State
Conveners: Peter Schlosser, Maribeth S Murray, Robert Newton,
and Gabriela Ibarguchi
About a decade ago it has been hypothesized that the Arctic is on a
trajectory towards a new, seasonally ice-free state (Eos, Vol. 86, No.
34, 23 August 2005). Features that were expected to develop during the
transition to this new state include a practically ice free Arctic Ocean
during summer, a smaller Greenland Ice Sheet, development of an active
layer due to widespread thawing of permafrost, and northward expansion
of vegetation zones. This session explores evidence for the progression
of the Arctic system towards a new state, the rate at which the
transition takes place, the nature of the transition (incremental vs
abrupt), perceptions of the impacts, and present and future responses to
a possible state shift. Contributions of results from observations,
model studies, and syntheses of the evolution of the Arctic system, both
in the disciplinary and transdisciplinary context, are encouraged.
https://agu.confex.com/agu/fm15/preliminaryview.cgi/Session9021
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