Active Atmosphere-Ecosystem Exchange of the Vast Majority of Detected Volatile Organic Compounds

Author:

Park J.-H.12,Goldstein A. H.13,Timkovsky J.2,Fares S.14,Weber R.1,Karlik J.5,Holzinger R.2

Affiliation:

1. Department of Environmental Science, Policy, and Management, University of California at Berkeley, Berkeley, CA 94720, USA.

2. Institute for Marine and Atmospheric Research Utrecht, Princetonplein 5, 3584 CC, Utrecht, Netherlands.

3. Department of Civil and Environmental Engineering, University of California at Berkeley, Berkeley, CA 94720, USA.

4. Consiglio per la ricerca e la sperimentazione in agricoltura–Research Center for the Soil-Plant System, Rome, Italy.

5. University of California Cooperative Extension, Bakersfield, CA 93307, USA.

Abstract

Two-Way Street Most studies of volatile organic compounds (VOCs) found in the atmosphere, which play important roles in atmospheric chemistry, have concentrated on dominant species such as isoprene. There are thousands of other classes of VOCs, and how they are exchanged between the biosphere and the atmosphere is unclear. Park et al. (p. 643 ) measured the fluxes of more than 500 types of VOCs using a highly sensitive type of mass spectrometry and an absolute value eddy covariance method. The majority of these species were actively exchanged between the atmosphere and the biosphere, with more than a quarter showing net deposition. These results should help to improve air quality and global climate models, and strengthen our understanding of atmospheric VOC chemistry.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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