ICARUS Chamber Experiment: 2014 FIXCIT Study_20140126_METHACROLEIN/nitrogen dioxide/methyl nitrite/methacrylic acid epoxide_Hydroxyl radical_Ammonium sulfate_Methacrolein + OH, high NO, dry, then humidify and add (NH4)2SO4 seed at end

Goals:; Understand the gas-phase products of MPAN + OH. Understand what contributes to SOA from MPAN + OH.

Summary:; Within an hour of lights on, methacrolein was completely oxidized away. Significant amounts of organic aerosol were reported by AMS past 30% oxidation of methacrolein. TD-LIF reported increasing signal on their PN channel, peaking around lights off. Upon lights off, GHTOS reported significant OH interference, so the addition of NO was held off for 20 minutes. NO addition led to an excess of roughly 90ppb of NO and successfully titrated out the ozone. Wall loss was monitored for approximately an hour. MAE standard (courtesy of the Surratt group at UNC-Chapel Hill) was then injected into the chamber, at approximately ~10ppb. Wall loss was monitored again for another 90 minutes. At this point, humidified air was added to the bag to intentionally cause wall loss of MAE. Wall loss did increase after addition of humidity. Wet ammonium sulfate seed aerosol was then injected into the bag and no extra wall loss was noted from MAE.

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

Experiment Category: Gas phase chemical reaction, Aerosol formation; Oxidant: Hydroxyl radical; Reactants: METHACROLEIN, nitrogen dioxide, methyl nitrite, methacrylic acid epoxide; Reaction Type: Photooxidation; Relative Humidity: 5; Temperature: 26; Seed Name: Ammonium sulfate; Pressure: 750

To Access Resource:

Questions? Email Resource Support Contact:

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

Temporal Range

  • Begin:  2014-01-26
    End:  2014-01-26

Keywords

Resource Type dataset
Temporal Range Begin 2014-01-26
Temporal Range End 2014-01-26
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 2025-06-17
Digital Object Identifier (DOI) https://doi.org/10.5065/ywwd-6s81
Alternate Identifier d789015
Resource Version N/A
Topic Category environment
Progress completed
Metadata Date 2025-06-17T21:05:02Z
Metadata Record Identifier edu.ucar.rda::d789015
Metadata Language eng; USA
Suggested Citation Wennberg, Paul O., Seinfeld, John H., Crounse, John D., Nguyen, Tran B.. (2025). ICARUS Chamber Experiment: 2014 FIXCIT Study_20140126_METHACROLEIN/nitrogen dioxide/methyl nitrite/methacrylic acid epoxide_Hydroxyl radical_Ammonium sulfate_Methacrolein + OH, high NO, dry, then humidify and add (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/ywwd-6s81. Accessed 18 June 2025.

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