Journal Article

PreJuSER-62345

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Amplified trace gas removal in the troposphere

Hofzumahaus, A.FZJ* ; Rohrer, F.FZJ* ; Lu, K.FZJ* ; Bohn, B.FZJ* ; Brauers, T.FZJ* ; Chang, C.-C. ; Fuchs, H.FZJ* ; Holland, F.FZJ* ; Kita, K. ; Kondo, Y. ; Li, X.FZJ* ; Lou, S.FZJ* ; Shao, M. ; Zeng, L. ; Wahner, A.FZJ* ; Zhang, Y.

2009
American Association for the Advancement of Scienc Washington, DC [u.a.]

This record in other databases:      

Please use a persistent id in citations: doi:10.1126/science.1164566

Abstract: The degradation of trace gases and pollutants in the troposphere is dominated by their reaction with hydroxyl radicals (OH). The importance of OH rests on its high reactivity, its ubiquitous photochemical production in the sunlit atmosphere, and most importantly on its regeneration in the oxidation chain of the trace gases. In the current understanding, the recycling of OH proceeds through HO2 reacting with NO, thereby forming ozone. A recent field campaign in the Pearl River Delta, China, quantified tropospheric OH and HO2 concentrations and turnover rates by direct measurements. We report that concentrations of OH were three to five times greater than expected, and we propose the existence of a pathway for the regeneration of OH independent of NO, which amplifies the degradation of pollutants without producing ozone.

Keyword(s): J

Note: We thank the PRiDe PRD 2006 campaign team (2002CB410801), especially L. J. Zhong, M. Hu, N. Takegawa, Y. Miyazaki, M. Koike, R. Haseler, and A. Oebel, for technical help and support at the field site, and J. L. Wang for help in the in situ measurement of VOCs. C.C. thanks Academic Sinica, Taiwan, for financial support of this work. Discussions with S. C. Liu and D. H. Ehhalt are gratefully acknowledged.; Record converted from VDB: 12.11.2012

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Research Program(s):

1. Atmosphäre und Klima (P22)

Appears in the scientific report 2009

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Database coverage:
; JCR ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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