Physical and biological land surface characteristics affect how energy, water, aerosols, and greenhouse gases are exchanged with the atmosphere. Thus, interactions between the land surface and the atmosphere represent a key component of the climate system. To improve predictions of global and regional climates, a better understanding of the tight coupling between land and atmosphere is needed. Observational and experimental studies can improve our understanding of land-atmosphere interactions. For example, eddy covariance measurements of fluxes of energy and matter help constrain flux dynamics across multiple time scales from hours to years and create large, long-term datasets to examine variability in land-atmosphere interactions. This data provides base data for ecosystem models. Chamber studies have provided the information needed to investigate process-based dynamics of GHG emissions. New technologies are expanding measurements to all landscapes across Canada – i.e., agricultural, forest, and peatland sites. These studies provide powerful tools to explore biophysical and biogeochemical processes underlying land-atmosphere interactions. This session highlights innovative research of all aspects of field campaigns observing land-atmosphere interactions.

Conveners: Shannon Brown, School of Environmental Sciences, University of Guelph; Elyn Humphreys, Geography and Environmental Studies, Carleton University; Sara Knox, Department of Geography, The University of British Columbia; Paul Moore, Earth, Environment & Society, McMaster University

2:00pm - 2:15pm    Water and Radiation-Use Efficiencies of Miscanthus and Corn on Marginal Land in the Coastal Plain Region of North Carolina    
Presenter(s): Henrique Carvalho (invited speaker)

2:15pm - 2:30pm    Effect of Enhance Efficiency Fertilizers on Nitrous Oxide Emissions in Canada: A Meta-Analysis    
Presenter(s): Vera Sokolov

2:30pm - 2:45pm    Effectiveness of dual inhibitors at reducing N2O emissions from Ontario corn and wheat urea-fertilized farm plots    
Presenter(s): David Pelster

2:45pm - 3:00pm    Identifying the drivers of springtime N2O emissions using two decades of micrometeorological and soil measurements with DNDC modeling    
Presenter(s): Leah Brown

3:00pm - 3:15pm    Methane emissions from swine farms in Manitoba    
Presenter(s): Andrew  VanderZaag

3:15pm - 3:30pm    Microbial methanogenesis in animal manure storage: modelling and developing potential methane mitigation strategy    
Presenter(s): Birk Li