Articles | Volume 14, issue 24
Research article
23 Dec 2014
Research article |  | 23 Dec 2014

Origin, variability and age of biomass burning plumes intercepted during BORTAS-B

D. P. Finch, P. I. Palmer, and M. Parrington


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Short summary
We use the GEOS-Chem chemical transport model to quantify the CO sources responsible for the observed CO during the BORTAS-B campaign over Canada in 2011. We found the largest source was biomass burning from Ontario, with smaller sources from fossil fuel emissions from Asia and NE US. We develop an age-of-emission metric and show values in BORTAS-B are consistent with a slowing of photochemistry in plumes. Indirect evidence suggests this slowing is due to aerosols within the plumes.
Final-revised paper