What do correlations tell us about anthropogenic – biogenic interactions and SOA formation in the Sacramento plume during CARES? [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy, 2016.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description:: pages 1,729-1,746 : digital, PDF file
Additional Creators:: Pacific Northwest National Laboratory (U.S.), United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

During the Carbonaceous Aerosols and Radiative Effects Study (CARES) the DOE G-1 aircraft was used to sample aerosol and gas phase compounds in the Sacramento, CA plume and surrounding region. We present data from 66 plume transects obtained during 13 flights in which southwesterly winds transported the plume towards the foothills of the Sierra Nevada Mountains. Plume transport occurred partly over land with high isoprene emission rates. Our objective is to empirically determine whether organic aerosol (OA) can be attributed to anthropogenic or biogenic sources, and to determine whether there is a synergistic effect whereby OA concentrations are enhanced by the simultaneous presence of high concentrations of CO and either isoprene, MVK+MACR (sum of methyl vinyl ketone and methacrolein) or methanol, which are taken as tracers of anthropogenic and biogenic emissions. Furthermore, linear and bi-linear correlations between OA, CO, and each of three biogenic tracers, “Bio”, for individual plume transects indicate that most of the variance in OA over short time and distance scales can be explained by CO.

Report Numbers:

E 1.99:pnnl-sa--110254
pnnl-sa--110254

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Published through SciTech Connect.
02/15/2016.
"pnnl-sa--110254"
"KP1701000"
Atmospheric Chemistry and Physics 16 3 ISSN 1680-7316 AM
Lawrence I. Kleinman; Chongai Kuang; Art Sedlacek; Gunnar I. Senum; Stephen R. Springston; Jian Wang; Qi Zhang; John T. Jayne; Jerome D. Fast; John M. Hubbe; John E. Shilling; Rahul A. Zaveri.

Funding Information:

AC05-76RL01830

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