Greenhouse Gas Emissions from Ground Level Area Sources in a Dairy Operation
نویسندگان
چکیده
A new protocol similar to EPA method TO-14A was established to quantify and report variations in greenhouse gas (GHG) emissions from different ground level area sources (GLAS) in a free-stall dairy in central Texas. The objective of the study was to estimate and compare methane (CH4), carbon dioxide (CO2), and nitrous oxide (N2O) emission factors (EFs) from different GLAS using this new protocol during summer. A week-long sampling was performed during summer and seventy five chromatograms of air samples were acquired from six delineated GLAS (loafing pen, walkway, barn, silage pile, settling basin and lagoon) of the same dairy. Three primary GHGs were identified from the dairy operation during sampling period and the gas chromatograph (GC) was calibrated for CH4, CO2, and N2O. The GHGs concentrations measured at different GLAS during summer were ranged from 4.04±3.4 to 2493±1298, 383±131 to 3107±3878, and 0.06±0.03 to
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