Interactions of peroxy radicals from monoterpene and isoprene oxidation simulated in the radical volatility basis set

Isoprene affects new particle formation rates in environments and experiments also containing monoterpenes. For the most part, isoprene reduces particle formation rates, but the reason is debated. It is proposed that due to its fast reaction with OH, isoprene may compete with larger monoterpenes for oxidants. However, by forming a large amount of peroxy-radicals (RO2), isoprene may also interfere with the formation of the nucleating species compared to a purely monoterpene system. We explore the RO2 cross reactions between monoterpene and isoprene oxidation products using the radical Volatility Basis Set (radical-VBS), a simplified reaction mechanism, comparing with observations from the CLOUD experiment at CERN. We find that isoprene interferes with covalently bound C20 dimers formed in the pure monoterpene system and consequently reduces the yields of the lowest volatility (Ultra Low Volatility Organic Carbon, ULVOC) VBS products. This in turn reduces nucleation rates, while having less of an effect on subsequent growth rates.

To Access Resource:

Questions? Email Resource Support Contact:

  • opensky@ucar.edu
    UCAR/NCAR - Library

Resource Type publication
Temporal Range Begin N/A
Temporal Range End N/A
Temporal Resolution N/A
Bounding Box North Lat N/A
Bounding Box South Lat N/A
Bounding Box West Long N/A
Bounding Box East Long N/A
Spatial Representation N/A
Spatial Resolution N/A
Related Links N/A
Additional Information N/A
Resource Format PDF
Standardized Resource Format PDF
Asset Size N/A
Legal Constraints

Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Access Constraints None
Software Implementation Language N/A

Resource Support Name N/A
Resource Support Email opensky@ucar.edu
Resource Support Organization UCAR/NCAR - Library
Distributor N/A
Metadata Contact Name N/A
Metadata Contact Email opensky@ucar.edu
Metadata Contact Organization UCAR/NCAR - Library

Author Schervish, M.
Heinritzi, M.
Stolzenburg, D.
Dada, L.
Wang, M.
Ye, Qing
Hofbauer, V.
DeVivo, J.
Bianchi, F.
Brilke, S.
Duplissy, J.
El Haddad, I.
Finkenzeller, H.
He, X.
Kvashnin, A.
Kim, C.
Kirkby, J.
Kulmala, M.
Lehtipalo, K.
Lopez, B.
Makhmutov, V.
Mentler, B.
Molteni, U.
Nie, W.
Petäjä, T.
Quéléver, L.
Volkamer, R.
Wagner, A.
WInkler, P.
Yan, C.
Donahue, N.
Publisher UCAR/NCAR - Library
Publication Date 2024-07-01T00:00:00
Digital Object Identifier (DOI) Not Assigned
Alternate Identifier N/A
Resource Version N/A
Topic Category geoscientificInformation
Progress N/A
Metadata Date 2025-07-10T20:00:41.403825
Metadata Record Identifier edu.ucar.opensky::articles:42502
Metadata Language eng; USA
Suggested Citation Schervish, M., Heinritzi, M., Stolzenburg, D., Dada, L., Wang, M., Ye, Qing, Hofbauer, V., DeVivo, J., Bianchi, F., Brilke, S., Duplissy, J., El Haddad, I., Finkenzeller, H., He, X., Kvashnin, A., Kim, C., Kirkby, J., Kulmala, M., Lehtipalo, K., Lopez, B., Makhmutov, V., Mentler, B., Molteni, U., Nie, W., Petäjä, T., Quéléver, L., Volkamer, R., Wagner, A., WInkler, P., Yan, C., Donahue, N.. (2024). Interactions of peroxy radicals from monoterpene and isoprene oxidation simulated in the radical volatility basis set. UCAR/NCAR - Library. https://n2t.net/ark:/85065/d7vt1xfj. Accessed 31 July 2025.

Harvest Source