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Estimation of In-Canopy Ammonia Sources and Sinks in a Fertilized Zea mays Field
Citation:
BASH, J. O., J. T. Walker, G. G. Katul, M. R. Jones, E. Nemitz, AND W. P. Robarge. Estimation of In-Canopy Ammonia Sources and Sinks in a Fertilized Zea mays Field. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 44(5):1683-1689, (2010).
Impact/Purpose:
The National Exposure Research Laboratory′s (NERL′s) Atmospheric Modeling and Analysis Division (AMAD) conducts research in support of EPA′s mission to protect human health and the environment. AMAD′s research program is engaged in developing and evaluating predictive atmospheric models on all spatial and temporal scales for forecasting the Nation′s air quality and for assessing changes in air quality and air pollutant exposures, as affected by changes in ecosystem management and regulatory decisions. AMAD is responsible for providing a sound scientific and technical basis for regulatory policies based on air quality models to improve ambient air quality. The models developed by AMAD are being used by EPA, NOAA, and the air pollution community in understanding and forecasting not only the magnitude of the air pollution problem, but also in developing emission control policies and regulations for air quality improvements.
Description:
An analytical model was developed that describes the in-canopy vertical distribution of NH3 source and sinks and vertical fluxes in a fertilized agricultural setting using measured in-canopy concentration and wind speed profiles.
URLs/Downloads:
Estimation of In-Canopy Ammonia Sources and Sinks in a Fertilized Zea Mays Field (PDF, NA pp, 7479 KB, about PDF)Environmental Science and Technology
