Book/Dissertation / PhD Thesis

FZJ-2022-02576

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Investigations of the atmospheric OH, HO2 and RO2 radical chemical budgets and their impact on tropospheric ozone formation in a rural area in West-Germany in the JULIAC 2019 campaign

Cho, C. (Corresponding author)FZJ*

2022
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag Jülich
ISBN: 978-3-95806-625-0

Please use a persistent id in citations: http://hdl.handle.net/2128/31796

Abstract: Hydroxyl radicals (OH) are the main daytime oxidant, which determine the tropospheric oxidation capacity of an environment by limiting the chemical lifetime of most trace gases including volatile organic compounds (VOCs) and nitrogen oxides (NOX = NO + NO2). In the oxidation process of VOCs by OH, hydroperoxy (HO2), and organic peroxy (RO2) radicals are produced and they can regenerate OH through reactions with nitric oxide (NO). This ROX (= the sum of OH, HO2, RO2) cycle play a key role in converting primary emissions to secondary air pollutants such as ozone and secondary organic aerosols(SOA) (Levy, 1971; Carslaw et al., 2010; Li et al., 2019). Therefore, understanding the production and destruction of atmospheric ROX radicals is essential to develop strategies for efficiently mitigatingsecondary air pollutants.Measurements of atmospheric ROX radicals require highly selective and sensitive techniques because their atmospheric concentrations are very low with typical daytime values for OH of 105 - 107 cm- 3, and for HO2 and RO2 of 107 - 109 cm-3). Over the last decades, various instruments for the detection of radicals have been developed and used in various field campaigns and chamber experiments.

Note: Dissertation, Univ. Wuppertal, 2022

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Contributing Institute(s):

1. Troposphäre (IEK-8)

Research Program(s):

1. 899 - ohne Topic (POF4-899) (POF4-899)

Appears in the scientific report 2022

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Database coverage:
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