B33E:
Natural Wetlands, Inland Waters, and the Global Methane Cycle: Time to Reconcile Top-Down Atmospheric Estimates and Bottom-Up Biogeochemical Estimates of Methane Emissions III Posters

Submit an Abstract to this Session



Session ID#: 27090

Session Description:
Natural wetlands are the world's largest source of methane (CH4) to the atmosphere; emissions from inland waters have not yet been comprehensively assessed. About 50% of the world's wetlands and lakes are in regions >50˚N that are experiencing amplified warming. Wetland-methane emissions estimated from bottom-up biogeochemical, process, and Earth System models are consistently larger than those derived from top-down inverse models. Moreover, a large suite of bottom-up, biogeochemical studies exhibit large differences in magnitude, distribution and seasonality of emissions due primarily to differences in wetland areas and perhaps due to minimal use of flux observations in model evaluation. This session invites novel investigations aimed at reconciling these long-standing inconsistencies, and filling the gap in lake emissions, by reconciling the bottom-up process view with the top-down atmospheric perspective; reconciling tower, aircraft and satellite observations with process understanding; wetland/lake definitions/characterization and their influence on modeled emissions; balancing model complexity with data availability.
Primary Convener:  Elaine Matthews, NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY, United States
Conveners:  Dr. Ruth K Varner, PhD, University of New Hampshire, Durham, NH, United States, Lori Bruhwiler, NOAA Boulder, Boulder, CO, United States and David Bastviken, Linköping University, Department of Thematic Studies – Environmental Change, Linköping, Sweden
Chairs:  Elaine Matthews, NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY, United States and Lori Bruhwiler, NOAA Boulder, Boulder, CO, United States
OSPA Liaison:  Dr. Ruth K Varner, PhD, University of New Hampshire, Durham, NH, United States
Co-Organized with:
Biogeosciences, and Atmospheric Sciences

Cross-Listed:
  • A - Atmospheric Sciences
  • C - Cryosphere
  • GC - Global Environmental Change
  • H - Hydrology
Index Terms:

0475 Permafrost, cryosphere, and high-latitude processes [BIOGEOSCIENCES]
0497 Wetlands [BIOGEOSCIENCES]
1836 Hydrological cycles and budgets [HYDROLOGY]
3322 Land/atmosphere interactions [ATMOSPHERIC PROCESSES]

Abstracts Submitted to this Session:

Characterizing spatial and temporal variability in methane gas-flux dynamics of subtropical wetlands in the Big Cypress National Preserve, Florida (218388)
Matthew Sirianni, Florida Atlantic University, Geosciences, Boca Raton, United States, Xavier Comas, Florida International University, Earth and Environment, Miami, FL, United States and Barclay Shoemaker, US Geological Survey, Davie, FL, United States
Spatial and Temporal Variability in Biogenic Gas Accumulation and Release in The Greater Everglades at Multiple Scales of Measurement (234850)
Matthew D McClellan1, Chase Cornett2, Lucas Schaffer2 and Xavier Comas3, (1)Florida Atlantic University, Boca Raton, FL, United States, (2)Florida Atlantic University, Geosciences, Boca Raton, FL, United States, (3)Florida International University, Earth and Environment, Miami, FL, United States
Methane emissions from western Canadian peatland lakes: assessing interactive effects of groundwater connectivity and permafrost thaw (235082)
McKenzie Ann Kuhn1, Cornelia Riechert2, Cristian Estop Aragones3, Tanja Broder2, David Bastviken4, Klaus-Holger Knorr5 and David Olefeldt6, (1)University of Alberta, Department of Renewable Resources, Edmonton, Canada, (2)University of Muenster, Muenster, Germany, (3)University of Alberta, Edmonton, AB, Canada, (4)Linköping University, Department of Thematic Studies – Environmental Change, Linköping, Sweden, (5)University of Muenster, Ecohydrology and Biogeochemistry Research Group, Institute of Landscape Ecology, Muenster, Germany, (6)University of Alberta, Department of Renewable Resources, Edmonton, AB, Canada
Temporal variation of ecosystem scale methane emission from a boreal fen in relation to common model drivers (238849)
Janne Rinne1, Eeva-Stiina Tuittila2, Olli Peltola3, Xuefei Li3, Maarit Raivonen4, Pavel Alekseychik4, Sami Haapanala4, Mari Pihlatie5, Mika Aurela6, Ivan Mammarella7 and Timo Vesala7, (1)Lund University, Department of Physical Geography and Ecosystem Science, Lund, Sweden, (2)University of Eastern Finland, School of Forest Sciences, Joensuu, Finland, (3)University of Helsinki, Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, Helsinki, Finland, (4)University of Helsinki, Department of Physics, Helsinki, Finland, (5)University of Helsinki, Institute for Atmospheric and Earth System Research / Physics, Faculty of Science, Helsinki, Finland, (6)Finnish Meteorological Institute, Helsinki, Finland, (7)Institute for Atmospheric and Earth System Research/Physics, University of Helsinki, Helsinki, Finland, Helsinki, Finland
Methane ebullition fluxes from northern peatlands: initial observations from four sites of contrasting vegetation type in Caribou Bog, ME (245935)
Lee D Slater, Rutgers University, Department of Earth and Environmental Sciences, Newark, United States, Xavier Comas, Florida International University, Earth and Environment, Miami, FL, United States, Kevin Mumford, Queen''s University, Kingston, ON, Canada, Andrew S Reeve, Sen. George J. Mitchell Center, Orono, ME, United States, Dr. Ruth K Varner, PhD, University of New Hampshire, Department of Earth Sciences, Durham, United States, Xi Chen, Rutgers University, Department of Earth & Environmental Sciences, Newark, NJ, United States, William Wright, WrightPSM, Deerfield Beach, FL, United States, Jalise Wright, Rutgers University Newark, Newark, United States, Ian L Molnar, University of Western Ontario, London, ON, Canada and Magdalena Krol, York University, Civil Engineering, Toronto, ON, Canada
2015-16 ENSO Drove Tropical Soil Moisture Dynamics and Methane Fluxes (248895)
Emma L Aronson1, Diego Dierick2, Jon Botthoff3, Amanda Cantu Swanson4, Robert Johnson4 and Michael F Allen3, (1)University of California Riverside, Department of Microbiology and Plant Pathology, Riverside, CA, United States, (2)Florida International University, Miami, FL, United States, (3)University of California Riverside, Center for Conservation Biology, Riverside, CA, United States, (4)University of California Riverside, Riverside, CA, United States
Comparing Multiple Scales of CH4 Fluxes in a Boreal Transition Forest - from Soil-Chambers to Eddy Covariance (257457)
Kathleen E Savage, Woodwell Climate Research Center, Falmouth, United States, Julie Shoemaker, Lesley University, Boston, MA, United States and David Y Hollinger, USDA Forest Service, Durham, NH, United States
Understanding the Temporal Variation of CO2 and CH4 Fluxes in a Subtropical Seasonal Wetland (262814)
Nuria Gomez-Casanovas, University of Illinois at Urbana-Champaign, Institute for Sustainability, Energy, and Environment, Urbana, IL, United States, Nicholas DeLucia, University of Illinois at Urbana Champaign, Urbana, IL, United States, Evan H DeLucia, University of Illinois Urbana-Champaign, Urbana, United States, Elizabeth Boughton, Buck Island Ranch, Archbold Biological Station, Lake Placid, DC, United States and Carl Bernacchi, United States Department of Agriculture Agricultural Research Service, Global Change and Photosynthesis Research Unit, Urbana, United States
Methanogenic pathways in Alaskan peatlands at different trophic levels with evidence from stable isotope ratios and metagenomics (265858)
Lin Zhang1, Xiao Liu2, Lauren Langford3, Jeff Chanton4, Spencer Roth5, Jeffra Schaefer6, Tamar Barkay6 and Mark E Hines7, (1)Texas A&M University Corpus Christi, Corpus Christi, TX, United States, (2)University of Massachusetts Lowell, Biological Science, Lowell, MA, United States, (3)Florida State University, Tallahassee, United States, (4)Florida State University, Department of Earth, Ocean & Atmospheric Science, Tallahassee, United States, (5)Rutgers, New Brunswick, United States, (6)Rutgers University New Brunswick, New Brunswick, NJ, United States, (7)Univ Massachusetts Lowell, Lowell, MA, United States
Patterns of in-soil methane production and atmospheric emission among different land covers of a Lake Erie estuarine wetland (266613)
Camilo Rey-Sanchez1, Timothy Hector Morin2, Kay C Stefanik1, Jordan Angle1, Kelly C. Wrighton1 and Gil Bohrer3, (1)Ohio State University Main Campus, Columbus, OH, United States, (2)Syracuse University, College of Environmental Science and Forestry, Syracuse, United States, (3)The Ohio State University, Department of Civil, Environmental and Geodetic Engineering, Columbus, United States
Extreme nitrogen deposition can change methane oxidation rate in moist acidic tundra soil in Arctic regions (269041)
Jaehyun Lee, Yonsei University, School of Civil and Environmental Engineering, Seoul, Korea, Republic of (South), Jinhyun Kim, Yonsei University, College of Engineering, Seoul, South Korea and Hojeong Kang, Yonsei University, Seoul, South Korea
Enhanced contribution of wetland methane variability during recent El Nino (272643)
Zhen Zhang, ITP Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China and Benjamin Poulter, NASA Goddard Space Flight Center, Greenbelt, MD, United States
Modeling the Distribution and Type of High-Latitude Natural Wetlands for Methane Studies (276146)
Joy Romanski, NASA Goddard Institute for Space Studies, New York, NY, United States and Elaine Matthews, NASA, Ames Research Center, Moffett Field, CA, United States
The Use of Satellite Data to Relate Waterbody Surface Area and Temperature to Greenhouse Gas Emissions Across a Subarctic Landscape (280869)
Christina Herrick, University of New Hampshire, Earth Systems Research Center, Durham, United States, Michael W Palace, University of New Hampshire, Dept. of Earth Sciences and Earth Systems Research Center, Durham, United States, Martin Wik, Stockholm University, Dept. of Geological Sciences, Stockholm, Sweden, Sophia A Burke, University of New Hampshire, Department of Earth Sciences, Durham, United States and Dr. Ruth K Varner, PhD, University of New Hampshire, Dept. of Earth Sciences and Earth Systems Research Center, Durham, NH, United States
Global Inverse Modeling of CH4 and δ13C-CH4 Measurements to Understand Recent Trends in Methane Emissions (283349)
Christopher L Butenhoff1, Sayantani Karmakar2, Andrew L Rice1 and Aslam Khan Khalil2, (1)Portland State University, Physics, Portland, OR, United States, (2)Portland State University, Portland, OR, United States
Sensitivity of Global Methane Bayesian Inversion to Surface Observation Data Sets and Chemical-Transport Model Resolution (283826)
Ethan J Lew1, Christopher L Butenhoff2, Sayantani Karmakar1, Andrew L Rice2 and Aslam Khan Khalil1, (1)Portland State University, Portland, OR, United States, (2)Portland State University, Physics, Portland, OR, United States
Linking seasonal surface water dynamics with methane emissions and export from small, forested wetlands (286021)
Kelly Hondula, University of Maryland College Park, College Park, MD, United States and Margaret Palmer, National Socio-Environmental Synthesis Center (SESYNC), Annapolis, United States
Global hierarchical classification of deepwater and wetland environments from remote sensing products (292499)
Etienne Fluet-Chouinard1, Bernhard Lehner2, Filipe Aires3, Catherine Prigent3 and Peter B. McIntyre4, (1)University of Wisconsin Madison, Madison, WI, United States, (2)McGill University, Department of Geography, Montreal, QC, Canada, (3)Columbia University, New York, NY, United States, (4)Cornell University, Ithaca, NY, United States
Methane loss during the early 21st century: Observational constraints on hydroxyl abundance (296383)
Thomas W Walker, California Institute of Technology, Pasadena, CA, United States, Kevin W Bowman, NASA Jet Propulsion Laboratory, Pasadena, United States and Zhe Jiang, University Corporation for Atmospheric Research, Boulder, CO, United States
Ebullition, Plant-Mediated Transport, and Subsurface Horizontal Water Flow Dominate Methane Transport in an Arctic Sphagnum Bog (297877)
Richard A Wehr, University of Arizona, Ecology and Evolutionary Biology, Tucson, AZ, United States, Carmody K McCalley, Rochester Institute of Technology, Rochester, NY, United States, Tyler A Logan, Abisko Scientific Research Station, Swedish Polar Research Secretariat, Abisko, Sweden, Jeff Chanton, Florida State University, Department of Earth, Ocean & Atmospheric Science, Tallahassee, United States, Patrick M Crill, Stockholm University, Stockholm, Sweden, Virginia Isabel Rich, Ohio State University, Department of Microbiology, Columbus, United States and Scott R Saleska, University of Arizona, Department of Ecology & Evolutionary Biology, Tucson, AZ, United States
Testing an Ebullition Model Shows the Importance of Peat Structure in The Florida Everglades (300215)
William J Wright, Florida Atlantic University, Boca Raton, FL, United States, Jorge Ramirez, Université du Québec à Montréal, Montreal, Canada and Xavier Comas, Florida International University, Earth and Environment, Miami, FL, United States

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