% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Zhang:1006995, author = {Zhang, Chenqi and Guo, Yindong and Shen, Hongru and Luo, Hao and Pullinen, Iida and Schmitt, Sebastian H. and Wang, Mingjin and Fuchs, Hendrik and Kiendler-Scharr, Astrid and Wahner, Andreas and Mentel, Thomas F. and Zhao, Defeng}, title = {{C}ontrasting {I}nfluence of {N}itrogen {O}xides on the {C}loud {C}ondensation {N}uclei {A}ctivity of {M}onoterpene‐{D}erived {S}econdary {O}rganic {A}erosol in {D}aytime and {N}ighttime {O}xidation}, journal = {Geophysical research letters}, volume = {50}, number = {4}, issn = {0094-8276}, address = {Hoboken, NJ}, publisher = {Wiley}, reportid = {FZJ-2023-01934}, pages = {e2022GL102110}, year = {2023}, 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.}, cin = {IEK-8}, ddc = {550}, cid = {I:(DE-Juel1)IEK-8-20101013}, pnm = {2111 - Air Quality (POF4-211)}, pid = {G:(DE-HGF)POF4-2111}, typ = {PUB:(DE-HGF)16}, UT = {WOS:000949585700001}, doi = {10.1029/2022GL102110}, url = {https://juser.fz-juelich.de/record/1006995}, }