Quantifying sources and sinks of reactive gases in the lower atmosphere using airborne flux observations. Issue 19 (10th October 2015)

• Record Type: Journal Article
• Authors: Wolfe, G. M.; Hanisco, T. F.; Arkinson, H. L.; Bui, T. P.; Crounse, J. D.; Dean‐Day, J.; Goldstein, A.; Guenther, A.; Hall, S. R.; Huey, G.; Jacob, D. J.; Karl, T.; Kim, P. S.; Liu, X.; Marvin, M. R.; Mikoviny, T.; Misztal, P. K.; Nguyen, T. B.; Peischl, J.; Pollack, I.; Ryerson, T.; St. Clair, J. M.; Teng, A.; Travis, K. R.; Ullmann, K.; Wennberg, P. O.; Wisthaler, A.
• Is Part Of: Geophysical research letters. Volume 42:Issue 19(2015:Oct.)
• Page Start: 8231
• Page End: 8240
• Publication Date: 2015-10-10
• Subjects: flux -- isoprene -- deposition -- emission -- SEAC4RS -- biosphere; Geophysics -- Periodicals; Planets -- Periodicals; Lunar geology -- Periodicals; 550
• DOI: 10.1002/2015GL065839
• Languages: English
• ISSNs: 0094-8276

Abstract

Abstract: 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. Key Points: Airborne flux observations for a suite of reactive gases Direct constraints on production, loss, and surface‐atmosphere exchange Comprehensive evaluation of chemical budgets over a temperate forest