B11B:
Closing the Global Nitrous Oxide Budget: Magnitude, Spatiotemporal Patterns, and Responses I Posters


Session ID#: 10301

Session Description:
Atmospheric mixing ratios of nitrous oxide (N2O) substantially increased since the preindustrial era. Understanding the sources and magnitude of N2O as well as their historical responses to natural and anthropogenic driving forces is the key to effectively mitigate N2O emissions and climate change. This session aims at bringing together studies quantifying and predicting N2O emissions through the analysis of existing emissions inventories, empirical/statistical modeling, atmospheric inverse modeling and process-based ecosystem modeling. The objective of the session is to better constrain global and regional N2O budgets, understand the underlying mechanisms of spatiotemporal variations, and evaluate potential mitigation practices. Abstracts using observations and modeling at multiple spatial and temporal scales are invited.
Primary Convener:  Hanqin Tian, Auburn University, Auburn, AL, United States
Conveners:  Chaoqun Lu, Iowa Sate University, Ames, United States, Eri Saikawa, Emory University, Department of Environmental Sciences, Atlanta, GA, United States and Akihiko Ito, NIES National Institute of Environmental Studies, Ibaraki, Japan
Chairs:  Akihiko Ito, NIES National Institute of Environmental Studies, Ibaraki, Japan and Chaoqun Lu, Iowa Sate University, Ames, United States
OSPA Liaison:  Chaoqun Lu, Iowa Sate University, Ames, United States

Cross-Listed:
  • A - Atmospheric Sciences
  • GC - Global Environmental Change
Co-Sponsor(s):
  • IGBP: International Geosphere-Biosphere Programme -
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:

Global Estimation of Soil Nitrous Oxide Emission Using a Semi-Empirical Model and a Global Dataset (68653)
Shoji Hashimoto, Forestry & Forest Prod Res Ist, Tsukuba, Japan
Emission of Nitrous Oxide in Temperate Forests with Different Stages of Nitrogen Saturation in Central Japan (71865)
Fan Shaoyan, Tokyo University of Agriculture and Technology, Tokyo, Japan
Estimation of Pre-industrial Nitrous Oxide Emission from the Terrestrial Biosphere (73384)
Rongting Xu1, Hanqin Tian2, Chaoqun Lu3, Bowen Zhang1, Shufen Pan1 and Jia Yang1, (1)Auburn University, International Center for Climate and Global Change Research and School of Forestry and Wildlife Sciences, Auburn, AL, United States, (2)Auburn University, International Center for Climate and Global Change Research, Auburn, AL, United States, (3)Iowa State University, Ames, IA, United States
Diurnality of soil nitrous oxide (N2O) emissions (75966)
Ilya Gelfand1, Richard Moyer2, Asia Poe3, Da Pan4, Michael Abraha3, Jiquan Chen3, Mark A Zondlo5 and Philip Robertson3, (1)Ben-Gurion University, Midreshet Ben-Gurion, Israel, (2)Albright College, Reading, United States, (3)Michigan State University, East Lansing, MI, United States, (4)Princeton University, Civil and Environmental Engineering, Princeton, NJ, United States, (5)Princeton University, Civil and Environmental Engineering, Princeton, United States
Re-quantifying China’s N2O emissions from croplands (76162)
Feng Zhou and Ziyin Shang, Peking University, Beijing, China
Sensitivity of terrestrial N2O emission to atmospheric nitrogen deposition (76430)
Akihiko Ito1, Kengo Sudo2, Kazuya Nishina1, Kentaro Ishijima3 and Motoko Ito Inatomi4, (1)NIES National Institute of Environmental Studies, Ibaraki, Japan, (2)Nagoya University, Nagoya, Japan, (3)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, (4)Ibaraki University, Mito, Japan
Improved global estimation of N2O emission from nitrification using a process-based model and meta-analysis (76561)
Motoko Ito Inatomi, Ibaraki University, Mito, Japan, Tomohiro Hajima, JAMSTEC Japan Agency for Marine-Earth Science and Technology, Research Center for Environmental Modeling and Application, Yokohama, Japan and Akihiko Ito, NIES National Institute of Environmental Studies, Ibaraki, Japan
Comparison of N2O fluxes measured using flux-gradient, eddy-covariance, and chamber methods from an agricultural site (79314)
Shannon Elizabeth Brown1, Steve Sargent2, Pedro Machado1, Valerie Freemantle1, Luana Carvalho de Sena Rabelo1 and Claudia Wagner-Riddle1, (1)University of Guelph, School of Environmental Sciences, Guelph, ON, Canada, (2)Campbell Scientific, Inc., Logan, UT, United States
Using the DeNitrification-DeComposition Framework to Simulate Global Soil Nitrous Oxide Emissions in the Community Land Model with Coupled Carbon and Nitrogen (83752)
Brian Seok, Emory University, Atlanta, GA, United States and Eri Saikawa, Emory University, Department of Environmental Sciences, Atlanta, GA, United States
Evaluating Soil Oxygen as a Control on N2O Emissions from Ruminant Urine Patches under Different Irrigation Frequencies (84633)
Jennifer Owens1, Timothy J Clough1, Johannes Laubach2, John Hunt2, Rodney T Venterea3 and Rebecca L Phillips4, (1)Lincoln University, Lincoln, New Zealand, (2)Manaaki Whenua -- Landcare Research, Lincoln, New Zealand, (3)USDA Beltsville Agricultural Research Center, Beltsville, MD, United States, (4)Landcare Research, Lincoln, New Zealand
Measurements of N2O and SF6 mole fraction between 1977 and 1998 in archived air samples from Cape Meares, Oregon (85474)
Terry Rolfe, Portland State University, Portland, United States, Andrew L Rice, Portland State University, Portland, OR, United States and Jonathan Radda, Southern Oregon University, Physics, Ashland, OR, United States
N2O fluxes over a corn field from an open-path, laser-based eddy covariance system and static chambers (86013)
Lei Tao1, Da Pan2, Ilya Gelfand3, Michael Abraha4, Richard Moyer5, Asia Poe4, Kang Sun6, Philip Robertson4 and Mark A Zondlo7, (1)NEC Laboratories America, Princeton, NJ, United States, (2)Princeton University, Civil and Environmental Engineering, Princeton, NJ, United States, (3)Michigan State University, W.K. Kellogg Biological Station, Great Lakes Bioenergy Research Center, United States, (4)Michigan State University, East Lansing, MI, United States, (5)Albright College, Reading, United States, (6)Harvard-Smithsonian Center for Astrophysics, Cambridge, United States, (7)Princeton University, Civil and Environmental Engineering, Princeton, United States

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