B037:
Greenhouse Gas Exchange, Production and Biogeochemical Transformations in Marine and Terrestrial High-Latitude Open-Water Systems





Session ID#: 26207

Session Description:
High-latitude warming has the potential to release carbon stored beneath lakes and rivers, thaw subsea permafrost in the coastal zone, and dissociate methane hydrate beneath the oceans. These high-latitude carbon stocks contain enough carbon to dramatically elevate the global greenhouse gas inventory, yet their atmospheric contributions appear relatively small, at present. Aquatic systems are conduits for transmitting carbon-mobilizing heat into sediments and the seafloor. They are also habitats for biological communities that consume and transform carbon and other elements into biomass and other reservoirs, thereby limiting gas transfer to the atmosphere. We welcome microbiological, geochemical, and modeling studies from a range of aquatic systems including lakes, rivers, polynyas, ice-covered and ice-free seas, that quantify fluxes, constrain origins, and decipher elemental cycles influencing carbon and greenhouse gas exchange. We encourage studies that utilize novel instrumental and analytical strategies, and explore carbon cycle and greenhouse gas dynamics during previous climate transitions.
Primary Convener:  John Pohlman, USGS Coastal and Marine Science Center Woods Hole, Woods Hole, MA, United States
Convener:  Brett Thornton, Stockholm University, Dept. of Geological Sciences, Stockholm, Sweden

Abstracts Submitted to this Session:

Katy Sparrow, Stockholm University, Stockholm, Sweden and John D Kessler, University of Rochester, Rochester, NY, United States
Ellem Damm, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany
Clayton Elder1, Xiaomei Xu1, Jennifer Clare Walker1, Katey M Walter Anthony2, John Pohlman3, Christopher D Arp4, Amy Townsend-Small5, Kenneth M Hinkel5 and Claudia I Czimczik1, (1)University of California Irvine, Irvine, CA, United States, (2)University of Alaska Fairbanks, Water and Environmental Research Center, Fairbanks, AK, United States, (3)U.S. Geological Survey, Woods Hole Coastal and Marine Science Center, Woods Hole, MA, United States, (4)University of Alaska Fairbanks, Fairbanks, AK, United States, (5)University of Cincinnati, Cincinnati, OH, United States
Simon Bowring1, Ronny Lauerwald2, Bertrand Guenet1, Dan Zhu3 and Philippe Ciais4, (1)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France, (2)University of Exeter, College of Engineering, Mathematics and Physical Sciences, Exeter, EX4, United Kingdom, (3)CEA Saclay DSM / LSCE, Gif sur Yvette, France, (4)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette, France
Joshua Dean1, Ype Van der Velde1, Michael F Billett2, Kerry Jane Dinsmore3, Mark Garnett4, Ove Meisel1 and A Johannes Dolman1, (1)Free University of Amsterdam, Amsterdam, Netherlands, (2)University of Stirling, Stirling, United Kingdom, (3)Centre for Ecology and Hydrology, Biosphere-Atmosphere Interactions, Edinburgh, United Kingdom, (4)Scottish Universities Environmental Research Center at the University of Glasgow, NERC Radiocarbon Facility, East Kilbride, United Kingdom
Andrea Pain, University of Florida, Department of Geological Sciences, Gainesville, FL, United States, Jonathan B Martin, University of Florida, Geological Sciences, Gainesville, FL, United States and Ellen Eckels Martin, University of Florida, Geological Sciences, Ft Walton Beach, FL, United States
Jens Greinert1, John Pohlman2, Peter Urban1 and Miriam Roemer3, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)U.S. Geological Survey, Woods Hole Coastal and Marine Science Center, Woods Hole, MA, United States, (3)Marum and University of Bremen, Bremen, Germany
Ove Meisel, Joshua Dean, Jorien Vonk and A Johannes Dolman, Free University of Amsterdam, Amsterdam, Netherlands

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