Date

Multiple Session Announcements and Calls for Abstracts
American Geophysical Union Fall Meeting
5-9 December 2011
San Francisco, California

Abstract Submission Deadline for all Sessions:
Thursday, 4 August 2011

  1. B49 - Natural Wetlands: Observations and Modeling of Distributions
    and Methane Dynamics

  2. B55- Multi-trophic Level Response to Climate Change in Arctic
    Tundra Ecosystem

  3. H116 - Variations in Lake Stratification, Energy Budgets, and
    Ecosystem Dynamics Across Latitudes


  1. B49 - Natural Wetlands: Observations and Modeling of Distributions
    and Methane Dynamics

Organizers of Session B49, "Natural Wetlands: Observations and Modeling
of Distributions and Methane Dynamics," announce a call for abstracts.
The session will be convened at the American Geophysical Union (AGU)
Fall Meeting, 5-9 December 2011 in San Francisco, California.

Natural wetlands are the world's largest methane source and are highly
sensitive to climate variations. Uncertainties in methane emission are
driven in part by the spatial and temporal heterogeneity of oxidation,
production and emission processes in these ecosystems, as well as by the
inherent variation in vegetation and hydrologic regimes of the world's
wetlands. Understanding and integrating knowledge about wetland
distributions, processes, and characteristics from local field studies
to regional/global scales is crucial to predicting biogeochemical and
distributional dynamics under past, present, and future climates.

Organizers invite abstracts for modeling and measurement studies
focusing on: mechanisms of methane production, oxidation, and emission;
remote sensing of surface hydrological dynamics and vegetation
characterization; and modeling of wetland distributions and their
methane dynamics under all climates.

The abstract submission deadline for this and all other sessions is
Thursday, 4 August 2011 at 11:59 p.m. Eastern Daylight Time. To submit
an abstract, you must enter the first author's current AGU member ID and
password at: http://agu-fm11.abstractcentral.com/.

For further information, please contact:
Ruth Varner
Email: ruth.varner [at] unh.edu

Elaine Matthews
Email: ematthews [at] giss.nasa.gov

Kimberly Wickland
Email: kpwick [at] usgs.gov

Joe Melton
Email: joe.melton [at] epfl.ch


  1. B55- Multi-trophic Level Response to Climate Change in Arctic
    Tundra Ecosystem

Organizers of Session B55, "Multi-trophic Level Response to Climate
Change in Arctic Tundra Ecosystem," announce a call for abstracts. The
session will be convened at the American Geophysical Union (AGU) Fall
Meeting, 5-9 December 2011 in San Francisco, California.

Evidence accumulating from many disciplines shows that the Arctic is
currently undergoing a warming trend and multiple models predict this
warming will continue. As highlighted by the Arctic Climate Impact
Assessment (ACIA), climate change responses across trophic levels are
understudied in arctic systems compared to in others.

Organizers welcome studies that consider the cascade of changes that are
triggered, either directly or indirectly, by arctic warming; and in
particular studies focused on the impact of changing seasonality on
cross-trophic level dynamics. Empirical studies based on field
observations and experiments, as well as those based in either
terrestrial or aquatic habitats are all welcome.

The abstract submission deadline for this and all other sessions is
Thursday, 4 August 2011 at 11:59 p.m. Eastern Daylight Time. To submit
an abstract, you must enter the first author's current AGU member ID and
password at: http://agu-fm11.abstractcentral.com/.

For further information, please contact:
Natalie Boelman
Email: nboelman [at] ldeo.columbia.edu

Eric Post
Email: esp10 [at] psu.edu


  1. H116 - Variations in Lake Stratification, Energy Budgets, and
    Ecosystem Dynamics Across Latitudes

Organizers of Session H116, "Variations in Lake Stratification, Energy
Budgets, and Ecosystem Dynamics Across Latitudes," announce a call for
abstracts. The session will be convened at the American Geophysical
Union (AGU) Fall Meeting, 5-9 December 2011 in San Francisco,
California.

Warming trends, atmospheric teleconnections, and other variations in
climate modify the physical forcing of lakes on diurnal, synoptic,
seasonal, and interannual time scales. These, in turn, affect surface
heat fluxes and water temperature, as well as ice cover, stratification,
the depth and frequency of vertical mixing, and the extent and
penetration of riverine inflows. Changes in vertical and horizontal
transport affect rates of biogeochemical processes within lakes.

Organizers invite presentations that examine climate-related variations
in lake energy budgets, mixing dynamics, ice cover and duration, and
consequences for the biogeochemistry of lake systems from the tropics to
high latitudes.

The abstract submission deadline for this and all other sessions is
Thursday, 4 August 2011 at 11:59 p.m. Eastern Daylight Time. To submit
an abstract, you must enter the first author's current AGU member ID and
password at: http://agu-fm11.abstractcentral.com/.

For further information, please contact:
Sally MacIntyre
Email: sally [at] icess.ucsb.edu

John Lenters
Email: jlenters2 [at] unl.edu

Christopher Arp
Email: cdarp [at] alaska.edu