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ARS Home » Midwest Area » Ames, Iowa » National Laboratory for Agriculture and The Environment » Soil, Water & Air Resources Research » Research » Publications at this Location » Publication #275219
Title: Volatile organic compound emissions from dairy facilities in central California

Author
item HASSON, ALAM - California State University
item OGUNJEMIYO, SEGUN - California State University
item Trabue, Steven - Steve
item NIDDALA, SRIKAR - California State University
item ASHKAN, SHAWN - California State University
item VU, KENNEDY - California State University
item ADDALA, LAXMI - California State University
item OLEA, CATALINIA - California State University
item NANA, LUCIEN - California State University
item SCRUGGS, AUSTEN - California State University
item STEELE, JULIE - California State University
item SHELTON, THOMAS - California State University
item OSBORNE, BRENDA - California State University
item MC HENRY, JAMES - California State University

Submitted to: American Geophysical Union
Publication Type: Abstract Only
Publication Acceptance Date: 9/1/2011
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Emissions of volatile organic compounds (VOCs) from dairy facilities are thought to be an important contributor to high ozone levels in central California, but emissions inventories from these sources contain significant uncertainties. In this work, VOC emissions were measured at two central California dairies during 2010 and 2011. Isolation flux chambers were used to measure direct emissions from specific dairy sources, and upwind/downwind ambient profiles were measured from ground level up to heights of 60 m. Samples were collected using a combination of canisters and sorbent tubes, and were analyzed by GC-MS. Additional in-situ measurements were made using infra-red photoaccoustic detectors and Diode Laser Absorption Spectroscopy. Temperature and ozone profiles up to 250 m above ground level were also measured using a tethersonde. Substantial, fluxes of a number of VOCs including alcohols, volatile fatty acids and esters were observed at both sites. Implications of these measurements for regional air quality will be discussed.