B21H:
Global and Regional Nitrous Oxide Budget: Data, Models, and Uncertainty II

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Session ID#: 31713

Session Description:
Nitrous oxide (N2O) emissions and atmospheric concentrations have been steadily growing for decades, yet large uncertainties remain on the magnitude, sources and controlling factors of emissions. In order to assess climate stabilization pathways consistent with the Paris climate agreement, improved understanding of the global N2O budget and its regular assessment are imperative. This session aims to bring together studies to help quantify global and regional N2O budgets through the analysis of emissions inventories, field observations, terrestrial and ocean biogeochemical modeling, and atmospheric inverse modeling. Abstracts using any of these methods or their combination and approaches at multiple spatial and temporal scales are invited. Research from this session is expected to contribute to the development of a biannual update of the global N2O budget supported by the Global Carbon Project and the International Nitrogen Initiative.
Primary Convener:  Hanqin Tian, Auburn University, Auburn, AL, United States
Conveners:  Rona Thompson, Norwegian Institute for Air Research, Kjeller, Norway, Josep Gili Canadell, CSIRO Ocean and Atmosphere, Canberra, ACT, Australia and Wilfried Winiwarter, IIASA International Institute for Applied Systems Analysis, Laxenburg, Austria
Chairs:  Rona Thompson, Norwegian Institute for Air Research, Kjeller, Norway, Hanqin Tian, Boston College, Schiller Institute for Integrated Science and Society, Department of Earth and Environmental Sciences, Boston, United States, Josep Gili Canadell, CSIRO Ocean and Atmosphere, Canberra, ACT, Australia and Wilfried Winiwarter, IIASA International Institute for Applied Systems Analysis, Laxenburg, Austria
OSPA Liaison:  Jia Yang, Auburn University, International Center for Climate and Global Change Research and School of Forestry and Wildlife Sciences, Auburn, AL, United States
Index Terms:

0315 Biosphere/atmosphere interactions [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0469 Nitrogen cycling [BIOGEOSCIENCES]
0490 Trace gases [BIOGEOSCIENCES]

Abstracts Submitted to this Session:

The Nitrous Oxide (N2O) Budget: Constraints from Atmospheric Observations and Models (Invited) (218574)
Michael J Prather, University of California Irvine, Earth System Science Department, Irvine, CA, United States
Estimating North American N2O emissions and the N fertilizer yield fraction using the Carbon Tracker-Lagrange regional inversion framework (284847)
Cynthia D Nevison, INSTAAR/University of Colorado, Boulder, CO, United States, Arlyn Andrews, NOAA, Earth System Research Laboratory, Boulder, United States, Kirk W Thoning, NOAA, Global Monitoring Laboratory, Boulder, CO, United States, Edward J Dlugokencky, NOAA, Global Monitoring Laboratory, Boulder, United States, Colm Sweeney, Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States, Eri Saikawa, Emory University, Department of Environmental Sciences, Atlanta, GA, United States, Scot M Miller, Carnegie Institution for Science - Stanford, Department of Global Ecology, Stanford, CA, United States, Joshua Simon Benmergui, Harvard University, Cambridge, MA, United States and Marc Laurenz Fischer, Lawrence Berkeley National Lab, Berkeley, CA, United States
The 2017 Fertilizer Emissions Airborne Study (FEAST): Quantifying N2O emissions from croplands and fertilizer plants in the Mississippi River Valley. (254325)
Eric A Kort1, Alexander Gvakharia1, Mackenzie Lynn Smith2, Steve Conley3 and Kimberly Frauhammer4, (1)University of Michigan Ann Arbor, Climate and Space Sciences and Engineering, Ann Arbor, MI, United States, (2)Scientific Aviation Inc., Boulder, CO, United States, (3)Scientific Aviation, Boulder, CO, United States, (4)University of Michigan, Ann Arbor, United States
Global importance of soil freeze-thaw induced emissions of nitrous oxide from croplands (260182)
Claudia Wagner-Riddle1, Katelyn A Congreves2, Diego Abalos3, Aaron A Berg4, Shannon Elizabeth Brown1, Jaison Thomas Ambadan Thomas5, Xiaopeng Gao6 and Mario Tenuta6, (1)University of Guelph, School of Environmental Sciences, Guelph, ON, Canada, (2)University of Saskatchewan, Saskatoon, SK, Canada, (3)Wageningen University and Research Center, Department of Soil Quality, Wageningen, Netherlands, (4)University of Guelph, Department of Geography, Environment and Geomatics, Guelph, ON, Canada, (5)University of Guelph, Guelph, ON, Canada, (6)University of Manitoba, Department of Soil Science, Winnipeg, MB, Canada
Permafrost Thaw increases Emissions of Nitrous Oxide from Subarctic Peatlands (249981)
Carolina Voigt1, Maija E Marushchak2, Richard E Lamprecht1, Marcin Antoni Jackowicz-Korczynski3,4, Amelie Lindgren3,5, Mikhail Mastepanov6,7, Torben R Christensen3,8, Lars Granlund2, Teemu Tahvanainen2, Pertti Juhani Martikainen1 and Christina Biasi1, (1)University of Eastern Finland, Kuopio, Finland, (2)University of Eastern Finland, Joensuu, Finland, (3)Lund University, Lund, Sweden, (4)Aarhus University, Department of Ecoscience, Arctic Research Centre, Roskilde, Denmark, (5)Stockholm University, Department of Physical Geography, Stockholm, Sweden, (6)Aarhus University, Department of Ecoscience, Aarhus C, Denmark, (7)Arctic Research Center, Aarhus University, Depatment of Ecoscince, Roskilde, Denmark, (8)Aarhus University, Department of Ecoscience, Roskilde, Denmark
Measuring and modeling of soil N2O emissions - How well are we doing? (Invited) (209364)
Klaus Butterbach-Bahl, Aarhus University, Land-CRAFT, AgroEcology, Aarhus C, Denmark, Kiese Ralf, Karlsruhe Institute of Technology, Karlsruhe, Germany, Christian Werner, Biodiversity and Climate Research Centre, Frankfurt, United States and Benjamin Wolf, Karlsruhe Institute of Technology, IMK-IFU, Garmisch, Germany

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