ICARUS Chamber Experiment: 2014 FIXCIT Study_20140110_ALPHA-PINENE/hydrogen peroxide_Hydroxyl radical_No Seed_Alpha-pinene + OH, low NO, dry, (NH4)2SO4 seed at end

Goals:; To observe the low NOx oxidation products from OH + alpha-pinene for comparison to signals which were observed during the SOAS field campaign. Major first generation products should include the hydroxy hydroperoxide of alpha pinene, and pinonaldehyde.

Summary:; The experiment appeared to go well. There was a bit of a SNAFU at the beginning, as it was realized that the chamber exhaust line was still connected about 2-3 minutes after the addition of the alpha-pinene had been started. It was disconnected at this point, however, some of the alpha-pinene may have been lost to the exhaust. However, observations after the alpha-pinene addition was complete and before adding the H2O2, (PTRMS reported 28 ppbv levels of alpha-pinene and CRM OHR reported ~50 s^-1 OH reactivity) implied little of the alpha-pinene was lost to the exhaust. Thus, the experiment proceeded as planned. Particle nucleation was observed after about 1.5 hours of oxidation by the AMS. Peak organic aerosol levels of 25 ug/m^3 were reached after about 3 hours of oxidation. After ~5 hours of oxidation the lights were turned off, and ammonium sulfate seeds were added to the bag. This caused an increase in OA observed by the AMS.

Organization: 2014 FIXCIT Study; Lab Affiliation: California Institute of Technology; Chamber: Seinfeld chambers

Experiment Category: Gas phase chemical reaction; Oxidant: Hydroxyl radical; Reactants: ALPHA-PINENE, hydrogen peroxide; Reaction Type: Photooxidation; Relative Humidity: 5; Temperature: 27; Pressure: 755

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Questions? Email Resource Support Contact:

  • Bob Dattore
    dattore@ucar.edu
    UCAR/NCAR - Research Data Archive

Temporal Range

  • Begin:  2014-01-10
    End:  2014-01-10

Keywords

Resource Type dataset
Temporal Range Begin 2014-01-10
Temporal Range End 2014-01-10
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

Related Resource #1 : ICARUS Dataset at UC-Davis
Additional Information N/A
Resource Format ASCII
Standardized Resource Format ASCII
Asset Size 0.00 MB
Legal Constraints

Creative Commons Attribution 4.0 International License
Access Constraints None
Software Implementation Language N/A

Resource Support Name Bob Dattore
Resource Support Email dattore@ucar.edu
Resource Support Organization UCAR/NCAR - Research Data Archive
Distributor NCAR Research Data Archive
Metadata Contact Name N/A
Metadata Contact Email rdahelp@ucar.edu
Metadata Contact Organization NCAR Research Data Archive

Author Wennberg, Paul O.
Seinfeld, John H.
Crounse, John D.
Nguyen, Tran B.
Publisher Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory
Publication Date 2021-10-12
Digital Object Identifier (DOI) https://doi.org/10.5065/m1xr-1v29
Alternate Identifier d789020
Resource Version N/A
Topic Category environment
Progress completed
Metadata Date 2025-06-18T21:05:02Z
Metadata Record Identifier edu.ucar.rda::d789020
Metadata Language eng; USA
Suggested Citation Wennberg, Paul O., Seinfeld, John H., Crounse, John D., Nguyen, Tran B.. (2021). ICARUS Chamber Experiment: 2014 FIXCIT Study_20140110_ALPHA-PINENE/hydrogen peroxide_Hydroxyl radical_No Seed_Alpha-pinene + OH, low NO, dry, (NH4)2SO4 seed at end. Research Data Archive at the National Center for Atmospheric Research, Computational and Information Systems Laboratory. https://doi.org/10.5065/m1xr-1v29. Accessed 19 June 2025.

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