B14A:
Centennial Challenge: The Bioatmospheric N Cycle—N Emissions, Transformations, Deposition, and Terrestrial and Aquatic Ecosystem Impacts III


Submit an Abstract to this Session


Session ID#: 59714

Session Description:
Biogenic and anthropogenic emissions of reactive nitrogen (Nr) are transported, chemically transformed, and deposited on land and waters, altering structure and function of ecosystems and degrading environmental quality. Estimating atmospheric N emissions and deposition, and evaluating ecosystem responses require a diverse array of measurements and models that link processes at multiple scales. We seek presentations on physical, chemical, biological, and anthropogenic processes that drive local, regional and global nitrogen exchange, impacts on ecosystems, carbon uptake, nitrogen export, biodiversity, human health, and policy implications and responses.
Primary Convener:  Stuart B Weiss, Creekside Center for Earth Observation, Menlo Park, CA, United States
Conveners:  Meredith Galanter Hastings, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States, Maya Almaraz, University of California Davis, Joh Muir Institute of the Environment, Davis, United States and Rebecca Ryals, University of California Merced, Department of Life and Environmental Sciences, Merced, United States
Primary Liaison:  Meredith Galanter Hastings, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States
Chairs:  Meredith Galanter Hastings, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States and Stuart B Weiss, Creekside Center for Earth Observation, Menlo Park, CA, United States
OSPA Liaison:  Maya Almaraz, University of California Davis, Joh Muir Institute of the Environment, Davis, United States

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

0469 Nitrogen cycling [BIOGEOSCIENCES]
0478 Pollution: urban, regional and global [BIOGEOSCIENCES]
1615 Biogeochemical cycles, processes, and modeling [GLOBAL CHANGE]
3322 Land/atmosphere interactions [ATMOSPHERIC PROCESSES]

Abstracts Submitted to this Session:

Characterizing Remote Marine Ammonia Emissions: An Isotopic Approach in the Southern Ocean (406130)
Katye Altieri1, Marcello Vichi2, Shantelle Smith1, Casper Labuschagne3 and Kurt A.M. Spence4, (1)University of Cape Town, Oceanography Department, Cape Town, South Africa, (2)University of Cape Town, Department of Oceanography, Marine and Antarctic Research centre for Innovation and Sustainability (MARIS), Cape Town, South Africa, (3)South African Weather Service, Stellenbosch, South Africa, (4)University of Cape Town, Cape Town, South Africa
Improvement in terrestrial nitrogen cycle modeling for estimating ammonia emission from food production using current practices and sustainable alternatives (386252)
Ka Ming Fung1, Amos P. K. Tai2, Maria Val Martin3, Alexander Avramov4, Samuel Peters5 and Eri Saikawa5,6, (1)The Chinese University Hong Kong, Graduate Division of Earth and Atmospheric Sciences, Sha Tin, Hong Kong, (2)The Chinese University of Hong Kong, Department of Earth and Environmental Sciences, Faculty of Science, Hong Kong, Hong Kong, (3)University of Sheffield, Sheffield, S10, United Kingdom, (4)Emory University, Environmental Sciences, Atlanta, United States, (5)Emory University, Environmental Health, Atlanta, GA, United States, (6)Emory University, Department of Environmental Sciences, Atlanta, GA, United States
Surface-atmosphere exchange of ammonia over a corn field: eddy covariance flux measurements using QC-TILDAS (398695)
Saumya Singh1, Alexander Moravek2, Elizabeth Pattey3, Amy Irene Hiromi Hrdina4, Luc Pelletier5, Theodora Li1, Stuart Admiral6 and Jennifer G Murphy7, (1)University of Toronto, Department of Chemistry, Toronto, ON, Canada, (2)University of Toronto, Chemistry, Toronto, ON, Canada, (3)Agriculture & Agri-Food Canada, Science and Technology Branch, Ottawa, ON, Canada, (4)University of Toronto, Toronto, Canada, (5)Agriculture and Agri-Food Canada, Ottawa, Canada, (6)Agriculture and Agri-Food Canada, Science and Technology Branch, Ottawa, ON, Canada, (7)University of Toronto, Toronto, ON, Canada
The Birch Effect and Ammonia: Satellite Evidence of Substantial Rain-Induced Ammonia Emissions across the Sahel (367934)
Jonathan E Hickman, NASA Goddard Institute for Space Studies, New York, NY, United States, Enrico Dammers, Environment and Climate Change Canada, Air Quality Research Division, Toronto, ON, Canada, Corinne Galy-Lacaux, University Paul Sabatier Toulouse III, Laboratoire d'Aérologie, Toulouse, France and Guido van der Werf, Wageningen University and Research, Wageningen, Netherlands
Nitrogen on Farms: Strategies for Mitigating Losses in a Changing Climate (Invited) (411781)
Katherine Lynn Tully, University of Maryland College Park, Department of Plant Science and Landscape Architecture, College Park, United States
Nitrogen and light co-limitation of primary production in the Sacramento-San Joaquin Delta (434913)
Luke C Loken, University of California-Davis, Davis, CA, United States, Randy A Dahlgren, Univ California Davis, Davis, CA, United States, Erwin Van Nieuwenhuyse, US Department of Interior, Herndon, VA, United States and Steven Sadro, University of California Davis, Environmental Science and Policy, Davis, United States

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