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United States Department of Agriculture

Agricultural Research Service

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Location: Soil, Water & Air Resources Research

2013 Annual Report

1a. Objectives (from AD-416):
The objectives of this proposed research are to: 1) Measure the emission rates/fluxes of particulate matter (PM), selected volatile organic compounds (VOCs), and GHGs from open-lot cattle feedlots in Kansas and 2) Characterize the chemical nature of particulate matter emitted from commercial cattle feedlots.

1b. Approach (from AD-416):
1) Measurement of the concentration profiles of PM10 and PM2.5 in a commercial feedyard - within facility and/or downwind edge of the facility. a) Quasi-continuous – tapered element oscillating microbalance (TEOMs); and b) Time-averaged – low-volume federal reference method (FRM) samplers. 2) Measurement of the concentration profiles of greenhouse gases (i.e., CO2, N2O, CH4) and selected VOCs (i.e., phenols) - within facility and/or edge-of- facility boundaries. a) Canisters – for GHGs; and b) Sorbent tubes – for selected VOCs. 3) Meteorological tower equipped with eddy covariance instrumentation to be set up within or on the downwind edge of the facility. a) 3-D sonic anemometer; b) Open-path CO2/H2O gas analyzer; and c) Temperature profile. 4) Characterization of particulates and partitioning of VOCs from PM as a function of particle size using Raman spectroscopy.

3. Progress Report:
In 2013, we have been processing the massive dataset for the final project report. The two years of methane and ammonia laser data have been time linked to the micrometrology (micromet) data. The dataset collected using a multi-gas monitor for concentrations of ammonia, methane, carbon dioxide, and nitrous oxide has been completed for year two data (i.e., data linked to micromet data) and the data for year one is still being processed into a standard file format. The volatile organic compound (VOC) data is currently being processed with half of the VOC standards verified. Estimates for completion of the data collation with micromet data for the multi-gas monitor instrumentation is September 2013 and for VOC data to be collated with micromet data is December 2013.

4. Accomplishments

Last Modified: 10/18/2017
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