A43P:
Rising Atmospheric Methane: Causes and Consequences II Posters


Submit an Abstract to this Session


Session ID#: 53900

Session Description:
The global burden of atmospheric methane has exhibited periods of both rapid growth and stagnation over the past two decades, with unexplained rapid growth since 2014. This growth has been accompanied by a negative isotopic shift (δ13C-CH4), reversing the trend of the past two centuries. Methane does not have a single dominant source, but rather a wide spectrum of anthropogenic and natural sources.  This diversity of uncertain sources has led to a number of recent explanations for recent growth including: tropical wetlands, livestock, fossil fuels (coupled with declining biomass burning), and changes in the methane sink (via reaction with OH).  The warming impact of methane's unexpected growth is now the largest deviation from the Paris Agreement. This session invites work that investigates processes controlling the methane budget using in situ measurements, satellite observations, and modeling, as well as the ways in which emissions can be reduced.
Primary Convener:  Euan G Nisbet, Royal Holloway, University of London, Department of Earth Sciences, Egham, United Kingdom
Conveners:  Martin Manning, Victoria University of Wellington, Wellington, New Zealand and Sara E Mikaloff-Fletcher, National Institute of Water and Atmospheric Research (NIWA), Wellington, New Zealand
Primary Liaison:  Euan G Nisbet, Royal Holloway, University of London, Department of Earth Sciences, Egham, United Kingdom
Chairs:  Euan G Nisbet, Royal Holloway, University of London, Department of Earth Sciences, Egham, United Kingdom and Sara E Mikaloff-Fletcher, National Institute of Water and Atmospheric Research (NIWA), Wellington, New Zealand
OSPA Liaison:  Euan G Nisbet, Royal Holloway, University of London, Department of Earth Sciences, Egham, United Kingdom

Cross-Listed:
  • B - Biogeosciences
  • GC - Global Environmental Change
  • SI - Societal Impacts and Policy Sciences
Index Terms:

0315 Biosphere/atmosphere interactions [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0428 Carbon cycling [BIOGEOSCIENCES]
1605 Abrupt/rapid climate change [GLOBAL CHANGE]
1615 Biogeochemical cycles, processes, and modeling [GLOBAL CHANGE]

Abstracts Submitted to this Session:

Climate-carbon cycle feedbacks during the response to pulse perturbations of methane (424323)
Kristina Rolph, Pennsylvania State University Main Campus, University Park, PA, United States and Chris E Forest, The Pennsylvania State University, Meteorology and Atmospheric Science, University Park, United States
Effects of Methane and Hydroxyl Radical Chemistry on Decadal Methane Emissions Estimates (444173)
Newton Nguyen1, Christian Frankenberg2,3, Yi Yin1 and Alexander J. Turner4, (1)California Institute of Technology, Pasadena, CA, United States, (2)NASA Jet Propulsion Laboratory, Pasadena, United States, (3)California Institute of Technology, Pasadena, United States, (4)UC Berkeley, Berkeley, CA, United States
Simulating Methane Trends and Variability Over the 1980-2014 period Using GFDL-AM4 Model (392583)
Jian He1, Dr. Vaishali Naik2, Larry Wayne Horowitz2, Edward J Dlugokencky3 and Kirk W Thoning3, (1)Princeton University, The Program in Atmospheric and Oceanic Sciences, Princeton, NJ, United States, (2)NOAA Geophysical Fluid Dynamics Laboratory, Princeton, United States, (3)NOAA Earth System Research Laboratory, Boulder, CO, United States
Global methane budget by inversion modelling utilising δ13C-CH4 observations in CarbonTracker Europe – CH4 (359099)
Vilma Kangasaho1, Aki Tsuruta1, Tuula Aalto1, Leif Bjarne Backman1, Sander Houweling2, Maarten C Krol3,4, Wouter Peters5, Ingrid Theodora van der Laan-Luijkx6,7, Sebastian Lienert8, Fortunat Joos9, Edward J Dlugokencky10, Sylvia Michel11, James W C White12 and Rebecca Fisher13, (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, Environmental Sciences, Wageningen, Netherlands, (5)Wageningen University, Meteorology and Air Quality, Wageningen, Netherlands, (6)Wageningen University and Research, Wageningen, Netherlands, (7)Institute for Marine and Atmospheric Research Utrecht, Utrecht, Netherlands, (8)University of Bern, Climate and Environmental Physics, Bern, Switzerland, (9)Univ Bern, Climate and Environmental Physics, Bern, Switzerland, (10)NOAA, Global Monitoring Laboratory, Boulder, United States, (11)University of Colorado, Institute of Arctic and Alpine Research, Boulder, CO, United States, (12)Univ Colorado, Institute of Arctic and Alpine Research, Boulder, CO, United States, (13)Royal Holloway, University of London, Department of Earth Sciences, Egham, United Kingdom
CH4-emission estimation from different sources using the present GOSAT and the next-generation imaging-spectrometer suites (362052)
Akihiko Kuze1, Hiroshi Suto2, Nobuhiro Kikuchi3, Kei Shiomi2, Fumie Kataoka4, Yutaka Kondo5 and Takahiro Kawashima4, (1)GoRadS, INC., Tokyo, Japan, (2)Japan Aerospace Exploration Agency, Tsukuba, Japan, (3)JAXA, Tsukuba, Ibaraki, Japan, (4)Remote Sensing Technology Center of Japan, Tsukuba, Japan, (5)National Institute of Polar Research, Tachikawa, Japan
Diagnosing Global Changes in Atmospheric Methane Using Ethane and Propane (405317)
Douglas Finch1, Paul I Palmer2, Emily Dowd1, Dr. Detlev Helmig3, Brendan Blanchard4, Isobel J Simpson5, Donald Ray Blake5, Martin K Vollmer6, Stefan Reimann7, Anja Claude8, Christian Plass-Duelmer8 and Dagmaer Kubistin9, (1)University of Edinburgh, School of Geosciences, Edinburgh, United Kingdom, (2)University of Edinburgh, School of GeoSciences, Edinburgh, United Kingdom, (3)Boulder A.I.R., Boulder, United States, (4)University of Colorado at Boulder, Institute of Arctic and Alpine Research, Boulder, United States, (5)University of California Irvine, Department of Chemistry, Irvine, United States, (6)Empa, Duebendorf, Switzerland, (7)Empa, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf, Switzerland, (8)Deutscher Wetterdienst (DWD), Hohenpeißenberg, Germany, (9)Deutscher Wetterdienst (DWD), Meteorological Observatory Hohenpeissenberg, Hohenpeissenberg, Germany
Little evidence for significant increases in total U.S. methane emissions over the past decade (413324)
Xin Lan1,2, Pieter P Tans3, Colm Sweeney3, Arlyn Andrews4, Edward J Dlugokencky3, Stefan Schwietzke5,6, Jonathan Kofler7, Kathryn McKain8,9, Patricia M Lang10, Kirk W Thoning11, Molly Crotwell3,12, Stephen A Montzka3, Benjamin R Miller13, Dr. Detlev Helmig14 and Sebastien Biraud15, (1)NOAA, ESRL/GMD, Boulder, CO, United States, (2)University of Colorado at Boulder, CIRES, Boulder, CO, United States, (3)NOAA, Global Monitoring Laboratory, Boulder, United States, (4)SilverLining, Washington, DC, United States, (5)NOAA Boulder, Boulder, CO, United States, (6)Cooperative Institute for Research in Environmental Studies, Boulder, CO, United States, (7)NOAA Boulder, Earth System Research Laboratory, Global Monitoring Division, Boulder, CO, United States, (8)NOAA Boulder, ESRL, Boulder, United States, (9)University of Colorado at Boulder, CIRES, Boulder, United States, (10)National Oceanic and Atmospheric Administration, Global Monitoring Division, Earth System Research Laboratory, Boulder, CO, United States, (11)NOAA, Global Monitoring Laboratory, Boulder, CO, United States, (12)Cooperative Institute for Research in Environmental Sciences, Boulder, United States, (13)Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, (14)Boulder A.I.R., Boulder, United States, (15)Lawrence Berkeley National Laboratory, Berkeley, CA, United States
Methane Monitor: The First Full Year of Campaigns and Lessons Learned (344515)
William David Tandy Jr, Ball Aerospace & Technologies Corp, Boulder, CO, United States
Can the methane burden be brought back to Paris targets?- options for reduction and removal. (416444)
Euan G Nisbet, David Lowry, Rebecca Fisher and James L France, Royal Holloway, University of London, Department of Earth Sciences, Egham, United Kingdom
The Methane-To-Go (CH4-To-Go) Field Campaign in the Persian/Arabian Gulf – Emissions from Off- and On-shore Natural Gas and Oil Operations (464448)
Heidi Huntrieser1, Anke Roiger2, Daniel N Sauer1, Hans Schlager2 and Daniel Zavala Araiza3, (1)German Aerospace Center (DLR) Oberpfaffenhofen, Institute of Atmospheric Physics, Wessling, Germany, (2)German Aerospace Center DLR Oberpfaffenhofen, Institute of Atmospheric Physics, Oberpfaffenhofen, Germany, (3)Environmental Defense Fund, Amsterdam, Netherlands
Baseline Methane Concentrations using Eddy Covariance Methods near a Hydraulic Fracturing Site (360384)
Chante Vines, Ohio State University Main Campus, Columbus, OH, United States, Camilo Rey-Sanchez, North Carolina State University, Raleigh, United States, Derek Johnson, West Virginia University, Morgantown, WV, United States, Jaclyn Hatala Matthes, Harvard Forest, Petersham, United States, Sarah Russell, University of British Columbia, Geography, Vancouver, BC, Canada and Gil Bohrer, The Ohio State University, Department of Civil, Environmental and Geodetic Engineering, Columbus, United States
Redox Transitions Enhance Methane Production in Peat Systems (448457)
Jared Lee Wilmoth, Princeton University, Princeton Environmental Institute, Geosciences, Princeton, NJ, United States, Xiao Liu, University of Massachusetts Lowell, Biological Science, Lowell, MA, United States, Jeffra Schaefer, Rutgers University New Brunswick, New Brunswick, NJ, United States, Julie Shoemaker, Lesley University, Boston, MA, United States, Satish Myneni, Princeton University, Princeton, NJ, United States and Xinning Zhang, Princeton University, Dept. of Geosciences and Princeton Environmental Institute, Princeton, NJ, United States
Why is there is a persistent decrease in the amplitude of the seasonal cycle of atmospheric methane over the Arctic? (411525)
Paul Palmer1, James Barlow2, Liang Feng3, Douglas Finch2 and Lori Bruhwiler4, (1)University of Edinburgh, Edinburgh, United Kingdom, (2)University of Edinburgh, School of Geosciences, Edinburgh, United Kingdom, (3)University of Edinburgh, NCEO, Edinburgh, EH9, United Kingdom, (4)NOAA, Global Monitoring Laboratory, Boulder, United States
Unexpected observation of emission of subglacial methane to the atmosphere (433887)
Jesper Riis Christiansen, University of Copenhagen, Department of Geosciences and Natural Resource Management, København K, Denmark and Christian Juncher Jørgensen, Aarhus University, Department of Bioscience, Arctic Environment, Aarhus C, Denmark

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