B12D:
The Bioatmospheric N Cycle: N Emissions, Transformations, Deposition, and Terrestrial and Aquatic Ecosystem Impacts I 

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Session ID#: 15317

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, and Institute at Brown for Environment and Society, Providence, RI, United States, Rebecca Ryals, Brown University, Providence, RI, United States and Xj Liu, CAU China Agricultural University, Beijing, China
Chairs:  Xj Liu, CAU China Agricultural University, Beijing, China, Meredith Galanter Hastings, Brown University, Department of Earth, Environmental and Planetary Sciences, and Institute at Brown for Environment and Society, Providence, RI, United States, Rebecca Ryals, Brown University, Providence, RI, United States and Stuart B Weiss, Creekside Center for Earth Observation, Menlo Park, CA, United States
OSPA Liaison:  Rebecca Ryals, Brown University, Providence, RI, United States
Index Terms:

0315 Biosphere/atmosphere interactions [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0469 Nitrogen cycling [BIOGEOSCIENCES]
0478 Pollution: urban, regional and global [BIOGEOSCIENCES]
3322 Land/atmosphere interactions [ATMOSPHERIC PROCESSES]

Abstracts Submitted to this Session:

Ammonia Emissions from Agriculture in China (133236)
Youfan Chen1, Lin Zhang1, Yuanhong Zhao1 and Binxiang Huang2, (1)Peking University, Department of Atmospheric and Oceanic Sciences, Beijing, China, (2)CAU China Agricultural University, Beijing, China
Evaluation of the N2 emission sources from grazed grassland soils (Invited) (180800)
Karl Richards1, Diana Selbie1,2, Hong Di3, Tim Clough4, Gary Lanigan5, Keith Cameron3, Rex David Pyles1,6 and Catherine Watson7, (1)Teagasc, Wexford, Ireland, (2)AgResearch, Ruakura Research Centre, Hamilton, New Zealand, (3)Lincoln University, Lincoln, New Zealand, (4)Lincoln University, Soil & Physical Sciences, Lincoln, New Zealand, (5)Teagasc, Environment, Soils and Land-Use Research, Wexford, Ireland, (6)Lincoln University, Soil & Physical Sciences Department, Lincoln, New Zealand, (7)Agri-Food & Biosciences Institute, Agri-Environment Branch, Belfast, United Kingdom
Tracking agricultural soil nitric oxide emission variations with novel isotopic measurements (183818)
David J Miller1,2, Jiajue Chai3, Felix Guo4, Sami Overby2, Curtis J Dell5, Heather Karsten6 and Meredith Galanter Hastings1,3, (1)Brown University, Institute at Brown for Environment and Society, Providence, RI, United States, (2)Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States, (3)Brown University, Department of Earth, Environmental and Planetary Sciences, and Institute at Brown for Environment and Society, Providence, RI, United States, (4)Brown University, School of Engineering, Providence, RI, United States, (5)USDA-ARS, Pasture Systems and Watershed Management Research Unit, University Park, PA, United States, (6)Pennsylvania State University Main Campus, Department of Plant Sciences, University Park, PA, United States
The effects of more extreme rainfall patterns on nitrogen leaching from a field crop system in the upper Midwest, USA (181923)
Laura Hess1, Eve-Lyn S Hinckley2, G Philip Robertson3 and Pamela A Matson1, (1)Stanford University, Stanford, CA, United States, (2)University of Colorado at Boulder, Institute of Arctic and Alpine Research, Boulder, CO, United States, (3)Michigan State University, WK Kellogg Biological Station, Hickory Corners, United States
Nitrogen biogeochemistry in the stream and transient storage zones of a freshwater tidal ecosystem, Delaware, U.S.A. (Invited) (137072)
Rebecca T Barnes1, Audrey H Sawyer2, Corey David Wallace3 and Deon Knights3, (1)Colorado College, Environmental Studies Program, Colorado Springs, CO, United States, (2)Ohio State University Main Campus, School of Earth Sciences, Columbus, OH, United States, (3)Ohio State University Main Campus, Columbus, OH, United States
Using Spring Water Nitrate to Monitor Spatiotemporal Trends in Nitrogen Deposition for the Santa Clara Valley Habitat Plan (136842)
Stuart B Weiss, Creekside Center for Earth Observation, Menlo Park, CA, United States and Meredith Galanter Hastings, Brown University, Department of Earth, Environmental and Planetary Sciences, and Institute at Brown for Environment and Society, Providence, RI, United States
Attribution of nitrogen deposition driven by urbanization over Pearl River Delta region China (Invited) (171389)
Xuemei Wang, Jinan University, School of Atmospheric Sciences, Guangzhou, China and Zhiyong Wu, Sun Yat-Sen University, School of Atmospheric Sciences, Guangzhou, China
Impacts of Nitrogen Removal and Re-Application on N2O fluxes from Narragansett Bay: Contrasting Turfgrasses, Salt Marshes, and Wastewater Treatment Systems (165725)
Elizabeth Brannon1, Serena Moseman-Valtierra2, Ryan Kelly Quinn3, Jose Amador3, Rebecca Brown3, Brittany Lancellotti3, Keegan Glennon1, Gina Celeste3 and Vinka Craver3, (1)University of Rhode Island, Narragansett, RI, United States, (2)University of Rhode Island, Biological Sciences, Kingston, United States, (3)University of Rhode Island, Kingston, RI, United States

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