B111
The Global Methane Cycle

Session ID#: 80720

Session Description:
Methane is a potent greenhouse gas with a shorter atmospheric lifetime than CO2 but a stronger warming potential molecule for molecule.  Concentrations of CH4 continue to increase, making it a critical component of pathways to mitigate climate change. This session highlights bottom-up and top-down integration of measurements and model simulations of methane sources and sinks. Examples of relevant topics include wetland and freshwater emissions, sources from the agriculture and energy sectors, and inverse modeling and atmospheric isotopes. The session also invites research on inter-annual and decadal scale trends and variability. The research presented will contribute to an updated global methane budget being developed under the umbrella of the Global Carbon Project and to IPCC AR6 carbon budgets.
Co-Organized:
  • GC - Global Environmental Change
Index Terms:

0426 Biosphere/atmosphere interactions [BIOGEOSCIENCES]
0475 Permafrost, cryosphere, and high-latitude processes [BIOGEOSCIENCES]
0497 Wetlands [BIOGEOSCIENCES]
1615 Biogeochemical cycles, processes, and modeling [GLOBAL CHANGE]

Primary Convener:  Robert B Jackson, Stanford University, Stanford, CA, United States
Conveners:  Marielle Saunois1, Benjamin Poulter2 and Philippe Bousquet1, (1)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France(2)NASA GSFC, Biospheric Science, Greenbelt, MD, United States
Primary Liaison:  Robert B Jackson, Stanford University, Stanford, CA, United States
 
An observation-driven assessment of wetland CH4 emissions under a changing climate (490590)
Ernest Koffi1, Peter Bergamaschi2, Ramdane Alkama3 and Alessandro Cescatti3, (1)European Commission Joint Research Centre, Ispra Vey, Italy, (2)European Commission Joint Research Centre, Ispra, Italy, (3)European Commission, Joint Research Centre, Ispra, Italy
 
A new broadband acoustic method for quantifying marine gas seepage applied to Methane budgets within the North Sea (493050)
Jianghui Li, Institute of Sound and Vibration Research (ISVR), Southampton, United Kingdom, Ben Roche, University of Southampton, Southampton, SO14, United Kingdom, Jonathan Bull, University of Southampton, Ocean and Earth Science, Southampton, United Kingdom, Paul White, University of Southampton, Institute of Sound and Vibration Research, Southampton, United Kingdom and Gaye Bayrakci, University of Southampton, Ocean and Earth Science, Southampton, SO14, United Kingdom
 
Investigating the contribution of different CH4 sources to global CH4 budget utilising CH4 and δ13C-CH4 observations in atmospheric inverse modelling (494700)
Vilma Kangasaho1, Aki Tsuruta1, Tuula Aalto1, Leif Bjarne Backman1, Sander Houweling2, Maarten C Krol3,4, Wouter Peters5,6, Ingrid Theodora van der Laan-Luijkx4, Sebastian Lienert7, Fortunat Joos8, Edward J Dlugokencky9, Sylvia Michel10, James W C White11 and Rebecca Fisher12, (1)Finnish Meteorological Institute, Helsinki, Finland, (2)SRON, Netherlands Institute for Space Research, Utrecht, Netherlands, (3)Netherlands Institute for Space Research, Utrecht, Netherlands, (4)Wageningen University and Research, Wageningen, Netherlands, (5)Wageningen University, Wageningen, Netherlands, (6)University of Groningen, Groningen, Netherlands, (7)University of Bern, Climate and Environmental Physics, Bern, Switzerland, (8)Univ Bern, Climate and Environmental Physics, Bern, Switzerland, (9)NOAA/ESRL Global Monitoring Division, Boulder, CO, United States, (10)Institute of Arctic and Alpine Research, Geological Sciences, Boulder, CO, United States, (11)Univ Colorado, Institute of Arctic and Alpine Research, Boulder, CO, United States, (12)Royal Holloway, University of London, Egham, United Kingdom
 
The Greenhouse Gas Methane Emissions from Waste Sources in the UK (499625)
Semra Bakkaloglu1, David Lowry2, Rebecca Fisher2, James Lawrence France2, Mathias Lanoisellé3, Julianne Fernandez3, Katarina Vinkovic4, Huilin Chen5, Stewart Davies6, Euan G Nisbet2 and Dave Lowry, Rebecca Fisher, James France, Mathias Lanoiselle, Julianna Fernandez, Katarina Vinkovic, Huilin Chen, Stewart Davies, Euan Nisbet, (1)Royal Holloway University of London, Egham, TW20, United Kingdom, (2)Royal Holloway, University of London, Egham, United Kingdom, (3)Royal Holloway University of London, Egham, United Kingdom, (4)University of Groningen, Center for Isotope Research, Groningen, Netherlands, (5)University of Groningen, Centre for Isotope Research, Groningen, Netherlands, (6)Viridor Viridor Waste Management Limited, Peninsula House, Rydon Lane, Exeter, Devon, United Kingdom
 
The significant contribution of lake depth in regulating global lake diffusive methane emissions (500496)
Changhui Peng1, Mingxu Li2 and Qiuan Zhu2, (1)University of Quebec at Montreal UQAM, Montreal, QC, Canada, (2)Northwest A&F University, Yangling, China
 
Global Methane, Project MOYA, and the UK’s Net Zero target. (507847)
Euan G Nisbet1, David Lowry2, Rebecca Fisher2, James L France2, Grant Allen3, James D Lee4 and MOYA Consortium, (1)Royal Holloway University of London, Egham, TW20, United Kingdom, (2)Royal Holloway, University of London, Egham, United Kingdom, (3)University of Manchester, Manchester, M13, United Kingdom, (4)University of York, Department of Chemistry, York, United Kingdom
 
Using a methane-specific land cover model to improve bottom-up estimates of pan-Arctic biogenic methane emissions (510861)
McKenzie Ann Kuhn1, Gustaf Hugelius2, Mikael Hovemyr3 and David Olefeldt1, (1)University of Alberta, Department of Renewable Resources, Edmonton, AB, Canada, (2)Stockholm University, Department of Physical Geography, Stockholm, Sweden, (3)Stockholm University, Stockholm, Sweden
 
Overviews of the last release of the Global Methane Budget 2000-2017: what have we learnt about the last 10 years of increasing methane? (511695)
Marielle Saunois1, Ann Stavert2, Benjamin Poulter3, Philippe Bousquet1, Josep Gili Canadell4, Robert B Jackson5, Peter A Raymond6, Edward J Dlugokencky7, Sander Houweling8,9, Prabir Kumar Patra10, Philippe Ciais1 and GCP-CH4 group, (1)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France, (2)Commonwealth Scientific and Industrial Research Organisation (CSIRO), Yarralumla, Australia, (3)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (4)CSIRO Marine & Atmospheric Res, Canberra, Australia, (5)Stanford University, Stanford, CA, United States, (6)Yale University, New Haven, CT, United States, (7)NOAA/ESRL Global Monitoring Division, Boulder, CO, United States, (8)SRON, Netherlands Institute for Space Research, Utrecht, Netherlands, (9)Vrije Universiteit Amsterdam, Amsterdam, Netherlands, (10)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan
 
Estimation of Rice Paddy Methane Emissions from Continuous Meteorological and Hyperspectral Observations with Deep Learning (516060)
Bolun Li1, Youngryel Ryu1, Benjamin Dechant1, Juwon Kong1, Yulin Yan2 and Minseok Kang1, (1)Seoul National University, Seoul, South Korea, (2)Seoul National University, Seoul, Korea, Republic of (South)
 
Testing the bottom-up estimates of geological methane emissions: seepage in Western NY, USA (517281)
Roxana Kazemi and Vasilii V Petrenko, University of Rochester, Department of Earth and Environmental Sciences, Rochester, NY, United States
 
Methane observations across US eco-climates using existing NEON infrastructure (520361)
Natchaya Pingintha Durden1, Christopher Florian1, Hongyan Luo1, Stefan Metzger2,3, Michael SanClements2,4 and Rommel C Zulueta5, (1)National Ecological Observatory Network, Battelle, Boulder, CO, United States, (2)National Ecological Observatory Network Program, Battelle, Boulder, CO, United States, (3)University of Wisconsin-Madison, Dept. of Atmospheric and Oceanic Sciences, Madison, WI, United States, (4)University of Colorado, Institute of Arctic and Alpine Research, Boulder, CO, United States, (5)National Ecological Observatory Network, Instrumented Systems, Boulder, CO, United States
 
The Isotopic Composition Of Fugitive Greenhouse Gases From Energy Wells Of The Western Canada Sedimentary Basin (520383)
Karlis Muehlenbachs, University of Alberta, Edmonton, AB, Canada and Gabriela Gonzalez Arismendi, University of Alberta, Earth and Atmospheric Science, Edmonton, AB, Canada
 
Anthropogenic methane emissions in China estimated from GOSAT satellite observations (524937)
Jian-Xiong Sheng1, Rachel Tunnicliffe2, Ronald G Prinn1, Anita Ganesan3, Matthew L Rigby3, Tia Scarpelli4, Lu Shen4, Shaojie Song4, Yuzhong Zhang4, Joannes D Maasakkers5, Greet Georgette Alice Janssens-Maenhout6, Hartmut Boesch7 and Robert Parker7, (1)Massachusetts Institute of Technology, Cambridge, MA, United States, (2)University of Bristol, School of Chemistry, Bristol, United Kingdom, (3)University of Bristol, Bristol, United Kingdom, (4)Harvard University, Cambridge, MA, United States, (5)SRON, Netherlands Institute for Space Research, Utrecht, Netherlands, (6)European Commission Joint Research Centre, Ispra Vey, Italy, (7)University of Leicester, Leicester, United Kingdom
 
Methane Emissions across Aquatic Ecosystems - From Headwater Streams to the Open Ocean (526083)
Judith Andrea Rosentreter1, Alberto V. Borges2, Peter A Raymond3, Bridget R Deemer4, Meredith Holgerson5, Shaoda Liu3, Chunlin Song6, Carlos M Duarte7, David Olefeldt8, Battin Tom9, Paul del Giorgio10, Yves Prairie11 and Bradley Eyre12, (1)Southern Cross University, Centre for Coastal Biogeochemistry, Lismore, NSW, Australia, (2)University of Liege, Chemical Oceanography Unit, Liege, Belgium, (3)Yale University, New Haven, CT, United States, (4)Southwest Biological Science Center, U.S. Geological Survey, Flagstaff, AZ, United States, (5)St. Olaf College, Northfield, OR, United States, (6)Yale University, New Haven, United States, (7)King Abdullah University of Science and Technology, Red Sea Research Center, Thuwal, Saudi Arabia, (8)University of Alberta, Department of Renewable Resources, Edmonton, AB, Canada, (9)Ecole Polytechnique Federale de Lausanne, Lausanne, Switzerland, (10)University of Quebec at Montreal UQAM, Montreal, QC, Canada, (11)UQAM, Montreal, QC, Canada, (12)Southern Cross Univerisity, Lismore, Australia
 
Towards Improved Tropical African Methane Emission Estimates Using TROPOMI XCH4 Data (542675)
Mark Lunt, University of Edinburgh, Edinburgh, EH9, United Kingdom, Paul I Palmer, University of Edinburgh, School of Geosciences, Edinburgh, United Kingdom, Liang Feng, University of Edinburgh, NCEO, Edinburgh, EH9, United Kingdom, Jochen Landgraf, SRON Netherlands Institute for Space Research, Utrecht, Netherlands and Pepijn Veefkind, Royal Netherlands Meteorological Institute, De Bilt, Netherlands
 
Wetland FLUXNET synthesis for CH4: understanding CH4 fluxes at daily to interannual timescales (Invited) (544811)
Sara H Knox, University of British Columbia, Vancouver, BC, Canada, Robert B Jackson, Stanford University, Stanford, CA, United States, Benjamin Poulter, NASA GSFC, Biospheric Science, Greenbelt, MD, United States, Etienne Fluet-chouinard, Stanford University, Earth System Science, Stanford, CA, United States, Lisamarie Windham-Myers, U.S. Geological Survey, Water Resources Mission Area, Menlo Park, CA, United States, Kyle B Delwiche, Massachusetts Inst of Tech, Cambridge, MA, United States, Dennis D Baldocchi, University of California Berkeley, Department of Environmental Science, Policy, and Management, Berkeley, CA, United States, Sheel Bansal, U.S. Geological Survey, Northern Prairie Wildlife Research Center, Jamestown, ND, United States, Annalea Lohila, Finnish Meteorological Institute, Helsinki, Finland, Gavin McNicol, Lawrence Livermore National Laboratory, Livermore, CA, United States, William J Riley, Lawrence Berkeley National Laboratory, Berkeley, CA, United States, Karina V Schafer, National Science Foundation, Arlington, VA, United States, Cove Sturtevant, University of California Berkeley, Berkeley, CA, United States, Jess Turner, University of Wisconsin Madison, Madison, United States, Masahito Ueyama, Osaka Prefecture University, Sakai, Japan, Zutao Yang, Stanford University, Stanford, United States and Zhen Zhang, University of Maryland College Park, College Park, MD, United States
 
Hysteretic methane emission temperature dependence from microbial and abiotic interactions (549317)
Kuang-Yu Chang1, William J Riley1, Patrick M Crill2, Robert F Grant3, Sara H Knox4, Gavin McNicol5, Robert B Jackson6 and Benjamin Poulter7, (1)Lawrence Berkeley National Laboratory, Berkeley, CA, United States, (2)Stockholm University, Stockholm, Sweden, (3)University of Alberta, Department of Renewable Resources, Edmonton, AB, Canada, (4)University of British Columbia, Vancouver, BC, Canada, (5)Lawrence Livermore National Laboratory, Livermore, CA, United States, (6)Stanford University, Stanford, CA, United States, (7)NASA GSFC, Biospheric Science, Greenbelt, MD, United States
 
High-precision cavity ring-down measurements of ẟ13CO2 and ẟ13CH4 along the Eastern North Atlantic onboard the sailing research vessel Fleur de Passion (550813)
Jonathan D Bent1, Daphne Donis2, Magdalena Hofmann1, Gregor Lucic1, Daniel F McGinnis2 and The Crew of the Fleur de Passion, (1)Picarro, Inc., Santa Clara, CA, United States, (2)University of Geneva, Department F.-A. Forel for Environmental and Aquatic Sciences (DEFSE), Geneva, Switzerland
 
Using Gaussian Process Emulation to Quantify the Global Methane Budget (554248)
Angharad Caroline Stell1, Luke Western1 and Matthew L Rigby2, (1)University of Bristol, School of Chemistry, Bristol, United Kingdom, (2)University of Bristol, Bristol, United Kingdom
 
Process-based mapping of global wetland carbon isotopic signatures of methane (559857)
Youmi Oh1, Qianlai Zhuang1, Licheng LIU1, Lisa R Welp1, Xin Lan2,3, Sourish Basu2, Edward J Dlugokencky4, Lori Bruhwiler2, John B Miller2, Sylvia Englund Michel5 and Stefan Schwietzke6, (1)Purdue University, Department of Earth, Atmospheric, and Planetary Sciences, West Lafayette, IN, United States, (2)NOAA, ESRL/GMD, Boulder, CO, United States, (3)Cooperative Institute for Research in Environmental Studies, Boulder, CO, United States, (4)NOAA/ESRL Global Monitoring Division, Boulder, CO, United States, (5)University of Colorado at Boulder, Boulder, CO, United States, (6)Environmental Defense Fund, Berlin, Germany
 
High-frequency in situ δ13C-CH4and δD-CH4observations from Zeppelin Mountain, Svalbard (572123)
Brett F Thornton, Kristian Andersson, Joachim Jansen and Patrick M Crill, Stockholm University, Department of Geological Sciences, Stockholm, Sweden
 
FLUXNET Methane Synthesis: Modeling Wetland Methane Fluxes from Sites to the Globe (575186)
Gavin McNicol1, Etienne Fluet-chouinard1, Zhen Zhang2, Jeremy Irvin3, Sharon Zhou3, Fred Lu4, Andrew Kondrich3, Vincent Liu3, Andrew Ng3, Sara Knox5, Benjamin Poulter6 and Robert B Jackson7, (1)Stanford University, Earth System Science, Stanford, CA, United States, (2)University of Maryland College Park, College Park, MD, United States, (3)Stanford University, Computer Science, Stanford, CA, United States, (4)Stanford University, Statistics, Stanford, CA, United States, (5)University of British Columbia, Vancouver, AB, Canada, (6)NASA GSFC, Biospheric Science, Greenbelt, MD, United States, (7)Stanford University, Stanford, CA, United States
 
Influences of hydroxyl radical on the top-down estimate of the global methane budget (585755)
Yuanhong Zhao1, Marielle Saunois1, Philippe Bousquet1, Michaela Imelda Hegglin2 and Bo Zheng1, (1)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France, (2)Unversity of Reading, Reading, United Kingdom
 
Continuous Measurement of Methane δ13C-CH4 and δD-CH4 Stable Isotope Ratios for Regional Source Identification (586520)
Christopher Rennick1, Tim Arnold2,3 and Edward Chung2,3, (1)National Physical Laboratory, Environment, Teddington, United Kingdom, (2)National Physical Laboratory, Teddington, United Kingdom, (3)University of Edinburgh, School of Geosciences, Edinburgh, United Kingdom
 
How Relevant are Freshwater Ecosystems for the Global Methane Budget? (587322)
Enrico Tomelleri1, Sylvie Pighini1, Katharina Scholz2, Ruben Sommaruga2, Giustino Tonon1, Federico Carotenuto3, Beniamino Gioli3, Franco Miglietta3, Alessandro Zaldei3 and Georg Wohlfahrt2, (1)Free University of Bozen-Bolzano, Bolzano, Italy, (2)University of Innsbruck, Innsbruck, Austria, (3)CNR National Research Council, Rome, Italy
 
Recent acceleration of methane growth rate: leading contributions from tropical wetlands and China (598880)
Yi Yin1, Frédéric Chevallier2, Christian Frankenberg3, Philippe Ciais2, Philippe Bousquet2, Marielle Saunois2, Bo Zheng2, John R Worden4, A. Anthony Bloom5, Robert Parker6, Daniel Jacob7 and Edward J Dlugokencky8, (1)Caltech, Pasadena, United States, (2)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France, (3)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (4)NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States, (5)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States, (6)University of Leicester, Leicester, United Kingdom, (7)Harvard University, Cambridge, MA, United States, (8)NOAA/ESRL Global Monitoring Division, Boulder, CO, United States
 
Quantifying the Effect of Neglecting Variable Methane LIfetime on Methane Emissions Estimates (599413)
Newton Nguyen, California Institute of Technology, Pasadena, CA, United States, Christian Frankenberg, NASA Jet Propulsion Laboratory, Pasadena, CA, United States, Alexander J. Turner, Harvard University, Cambridge, MA, United States, Yi Yin, Caltech, Pasadena, United States and Michael J Prather, Univ California Irvine, Irvine, CA, United States
 
Capturing Inundation Dynamics of Small Forested Wetlands at High Spatial and Temporal Resolution for Improved Estimation of Methane Fluxes (600284)
Kelly L. Hondula1, Ben DeVries2, C. Nathan Jones3 and Margaret Palmer1, (1)National Socio-Environmental Synthesis Center (SESYNC), Univ of MD, Annapolis, MD, United States, (2)University of Guelph, Geography, Environment and Geomatics, Guelph, Canada, (3)University of Alabama, Tuscaloosa, AL, United States
 
Detection of Fossil and Biogenic Methane at Regional Scales Using Atmospheric Radiocarbon (609206)
Heather D Graven, Imperial College London, London, SW7, United Kingdom, Giulia Zazzeri, Imperial College, London, United Kingdom and Thomas Hocking, Imperial College London, London, United Kingdom
 
Atmospheric Restoration: Removing Methane and Nitrous Oxide from Our Air (618528)
Robert B Jackson, Stanford University, Stanford, CA, United States, Edward I. Solomon, Stanford University, Chemistry, Stanford, CA, United States, Josep Gili Canadell, CSIRO Marine & Atmospheric Res, Canberra, Australia, Matteo Cargnello, Stanford University, Chemical Engineering, Stanford, United States and Christopher B Field, Stanford University, Stanford Woods Institute for the Environment, Stanford, CA, United States
 
Characterization of Methane Emissions from California Dairies: A Mobile Sensing Approach (622062)
Seyedmorteza Amini1, Longwen Gong1, Joshua Kim1, Frank Mitloehner2, Toshihiro Kuwayama1 and Michael FitzGibbon3, (1)California Air Resources Board, Sacramento, CA, United States, (2)Univ of CA Davis, Davis, CA, United States, (3)California Environmental Protection Agency Air Resources Board, Sacramento, CA, United States
 
Methane Emissions from Landfills in the Southeastern U.S. and a Comparison with Inventories (623073)
Jeff Peischl, Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, United States, Thomas B Ryerson, NOAA ESRL Chemical Sciences Division, Boulder, CO, United States and Michael Trainer, Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, CO, United States
 
Inter-annual variability of subtropical South American wetland emissions estimated from satellite methane observations (624867)
Hiroshi Takagi1, Akihiko Ito1, Heon-Sook KIM2, Shamil S Maksyutov1, Makoto Saito1 and Tsuneo Matsunaga1, (1)National Institute for Environmental Studies, Tsukuba, Japan, (2)Pusan National University, Busan, South Korea
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