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“Evaluation of Regional Isoprene Emission Estimates in California
Based on Direct Airborne Flux Measurements”. 

“Presentation is available for downloading”

Allen H. Goldstein, Ph.D., and 
Pawel K. Misztal, Ph.D.,
University of California, Berkeley

Friday, June 12, 2015 10:00 a.m., PDT (WEBCAST)
Coastal Hearing Room, 2nd Floor, Cal/EPA Building
1001 I Street, Sacramento, California

Accurately modeled Biogenic Volatile Organic Compound (BVOC)
emissions are an essential input to atmospheric chemistry
simulations of ozone and particle formation. BVOC emission models
originate from leaf and branch level measurements with scaling to
regional or larger spatial levels based on vegetation landcover
data derived Basal Emission Factors (BEFs), but they generally
lack validation by regional scale measurements. We directly
assess isoprene emission-factor databases for BVOC emission
models by deriving BEFs from direct airborne fluxes aggregated at
2 km resolution and averaged spatially over ecoregions covering
~10,000 km of California. Ecoregion averaged BEFs from the
landcover used by the Model of Emissions of Gases and Aerosols
from Nature (MEGAN) v. 2.1 BVOC emission model agreed within 10%
(r²=0.82) with measured BEFs, with few discrepancies (either
overestimation or underestimation). For more go to the
announcement at:
http://www.arb.ca.gov/research/seminars/goldstein3/goldstein3.htm

Main menu:
   http://www.arb.ca.gov/research/seminars/seminars.htm

Webcast:  http://www.calepa.ca.gov/broadcast/?bdo=1

Please send your-e-mail for the Q&A participation
to:   coastalrm@calepa.ca.gov

For more information on this seminar presentation please
contact:
   Ash Lashgari, Ph.D., at (916) 323-1506 or
Ash.Lashgari@arb.ca.gov

For more information on the ARB Research Seminar Series please
contact:
   Peter Mathews at (916) 323-8711 or Peter.Mathews@arb.ca.gov

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