Dear Colleagues: I'd like to draw your attention to these permafrost/carbon
related sessions. The first will focus more on carbon and biogeochemistry,
whereas the second has a focus on the physical processes aspects of permafrost.
Note that AGU submission deadline is early this year: Aug 4, 2011
GC26 Permafrost and Methane 3. Vulnerability of Permafrost Carbon to Climate
Change:
Permafrost zone soils contain 1670 Pg of carbon (C). Permafrost degradation
can change ecosystem C storage by enhancing microbial activity and ecosystem
respiration, but can also stimulate plant growth and increase C stored in
vegetation and surface soil. This session invites papers that examine
factors causing losses and gains in ecosystem C storage in particular that
relate to the question: What is the magnitude, timing and form of C release
from permafrost zone ecosystems to the atmosphere in a changing climate?
Papers may address any aspect of this topic from microbial communities to
the global scale, using a range of measurements or modeling to detect and
forecast permafrost thaw and the influence on the C cycle and future climate.
Ted Schuur, University of Florida
Kevin Schaefer, National Snow and Ice Data Center
co-Sponsors: Global Change, Biogeosciences, Cryosphere
C09 Dynamics of Permafrost Degradation - Impacts and Feedbacks:
Permafrost underlies 24% of the Earth's land surface with thermokarst
processes affecting ice-rich terrain. We solicit papers reflecting current
knowledge of permafrost degradation dynamics, including impacts of
disturbance and climate change, and resulting climate feedbacks. Submissions
are welcome from a range of permafrost-climate dynamics topics, including
remote sensing of permafrost degradation (satellite, airborne, ground-based,
geophysics); field-based or modeling process studies; cryolithologic /
paleoenvironmental studies; biogeochemistry; geomorphologic / ecohydrologic
feedbacks; landscape-scale modeling; integration of permafrost degradation
into land surface and carbon cycle models; and probabilistic risk assessments.
Cynthia Dinwiddie, Southwest Research Institute
Sarah Godsey, Pennsylvania State University
Guido Grosse, University of Alaska Fairbanks
Anna Liljedahl, University of Alaska Fairbanks
co-Sponsors: Biogeosciences, Global Environmental Change, Hydrology, Near
Surface Geophysics
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Ted Schuur, Ph.D.
Assoc. Professor of Ecosystem Ecology
Department of Biology
220 Bartram Hall, PO Box 118526
University of Florida
Gainesville, FL, 32611-8526
ph 352-392-7913
fax 352-392-3993
[email protected]
http://biology.ufl.edu/ecosystemdynamics/
