Quantifying sources and sinks of reactive gases in the lower atmosphere using airborne flux observations


Atmospheric composition is governed by the interplay of emissions, chemistry, deposition, and transport. Substantial questions surround each of these processes, especially in forested environments with strong biogenic emissions. Utilizing aircraft observations acquired over a forest in the southeast U.S., we calculate eddy covariance fluxes for a suite of reactive gases and apply the synergistic information derived from this analysis to quantify emission and deposition fluxes, oxidant concentrations, aerosol uptake coefficients, and other key parameters. Evaluation of results against state-of-the-science models and parameterizations provides insight into our current understanding of this system and frames future observational priorities. As a near-direct measurement of fundamental process rates, airborne fluxes offer a new tool to improve biogenic and anthropogenic emissions inventories, photochemical mechanisms, and deposition parameterizations.

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@inproceedings{Wolfe2015QuantifyingSA, title={Quantifying sources and sinks of reactive gases in the lower atmosphere using airborne flux observations}, author={Glenn M. Wolfe and Thomas F. Hanisco and Heather L. Arkinson and ThuHang Bui and John D. Crounse and J. Dean-Day and Allen H. Goldstein and A. B. Guenther and S. Hall and Greg Huey and D. J. Jacob and Thomas G Karl and Patrick S. Kim and X. Liu and Margaret R Marvin and P. K. Misztal and Toan B. Nguyen and Jeff Peischl and Ilana B. Pollack and Thomas B. Ryerson and J. M. St. Clair and Alex P. Teng and Katherine Rose Travis and Kirk Ullmann and Paul O. Wennberg and Armin Wisthaler}, year={2015} }