Journal Article

FZJ-2023-01934

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Contrasting Influence of Nitrogen Oxides on the Cloud Condensation Nuclei Activity of Monoterpene‐Derived Secondary Organic Aerosol in Daytime and Nighttime Oxidation

Zhang, C. ; Guo, Y. ; Shen, H. ; Luo, H. ; Pullinen, I. ; Schmitt, S. H. ; Wang, M. ; Fuchs, H.FZJ* ; Kiendler-Scharr, A. ; Wahner, A.FZJ* ; Mentel, T. F. (Corresponding author)FZJ* ; Zhao, D. (Corresponding author)

2023
Wiley Hoboken, NJ

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Please use a persistent id in citations: http://hdl.handle.net/2128/34353  doi:10.1029/2022GL102110

Abstract: Anthropogenic nitrogen oxides may influence the cloud condensation nuclei (CCN) activity of biogenic secondary organic aerosols (SOA) in both daytime photooxidation and nighttime NO3 oxidation, which has significant implications for the climatic impact of SOA. We investigated the influence of NOx on the CCN activity of monoterpene-derived SOA in OH oxidation and in NO3 oxidation. In OH oxidation, NOx had little influence on the hygroscopic parameter κ of organic aerosol (κOrg), which was attributed to the minor fraction of organic nitrates (ON) in SOA (<24%), resulted from the low branching ratio of RO2 + NO to form ON. In contrast, in NO3 oxidation κOrg was much reduced compared to OH/O3 oxidation due to a dominant fraction of ON. We report κ of MT-derived ON formed in photo-oxidation and NO3 oxidation (0.029–0.052) for the first time to our knowledge, which may be used to improve model simulations of CCN concentrations.

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Contributing Institute(s):

1. Troposphäre (IEK-8)

Research Program(s):

1. 2111 - Air Quality (POF4-211) (POF4-211)

Appears in the scientific report 2023

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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