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United States Department of Agriculture

Agricultural Research Service

Research Project: EMISSION AND DISPERSION OF AIR QUALITY CONSTITUENTS FROM AGRICULTURAL SYSTEMS Project Number: 3625-11630-002-00
Project Type: Appropriated

Start Date: Apr 15, 2006
End Date: Sep 30, 2009

Objective:
Evaluate emission and dispersion patterns to the boundary layer as a function of complex terrain and structural obstructions; Quantify the effectiveness of agricultural management to reduce ammonia and nitrous oxide emissions into the atmosphere; Identify and quantify volatile organic compounds (VOC) attached to particulates emitted from animal feeding operations and manure application on to fields. Identify and quantify amounts of endotoxins and pathogens emitted and dispersed from animal feeding operations and manure application sites.

Approach:
Utilize a wind tunnel to conduct a series of wind flow simulations over model scale terrain and structures to determine the wind flow patterns over complex agricultural sites that include buildings. Conduct lidar measurements of particulates and water vapor coupled with turbulence measurements obtained from sonic anemometers to characterize the turbulence regime in limited fetch environments. Evaluate the potential of using open path FTIR measurements to compliment the lidar measurements in the development of improved emission and dispersion models. Conduct studies on ammonia and nitrous oxide emission from controlled laboratory studies using soil columns and various manure application practices coupled with field studies to ascertain the impact of different soil and cropping management practices on these emissions. Collect particulate samples using samplers located at various positions from different livestock production facilities to determine the variation of particulate concentration and the VOC compounds attached to the particulates.

Last Modified: 8/27/2014
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