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Production of oxygenated volatile organic compounds from the ozonolysis of coastal seawater
(2023-09-26)
Dry deposition of ozone (O3) to the ocean surface and the ozonolysis of organic material found in the sea surface microlayer (SSML) is a potential source of volatile organic compounds (VOC) to the marine atmosphere. We use ...
Assessment of N2O5 heterogeneous reaction mechanisms in the Community Multiscale Air Quality (CMAQ) model
(2023-10-03)
Nitrogen oxides have negative human health impacts and play a central role in the production of secondary air quality pollutants like ozone and PM2.5. While day-time NOx cycling depends on photolytic reactions, night-time ...
Efficient production of carbonyl sulfide in the low-NOx oxidation of dimethyl sulfide
(Geophysical Research Letters, 2021-11-08)
The oxidation of carbonyl sulfide (OCS) is the primary, continuous source of stratospheric sulfate aerosol particles, which can scatter shortwave radiation and catalyze heterogeneous reactions in the stratosphere. While ...
Measurements of Volatile Organic Compounds in an Occupied Classroom
(2022-07-27)
This dataset contains measurements of indoor air quality made in an occupied classroom at the University of Wisconsin, Madison. The measurements are described in detail in the attached readme file. Measurements include: ...
Observations of biogenic volatile organic compounds over a mixed temperate forest during the summer to autumn transition
(2022-09-26)
The exchange of trace gases between the biosphere and the atmosphere is an important process that controls both chemical and physical properties of the atmosphere with implications for air quality and climate change. The ...
Oceanic emissions of dimethyl sulfide and methanethiol and their contribution to sulfur dioxide production in the marine atmosphere
(Atmospheric Chemistry and Physics Discussions, 2021-10-18)
Oceanic emissions of dimethyl sulfide (CH3SCH3, DMS) have long been recognized to impact aerosol particle composition and size, the concentration of cloud condensation nuclei (CCN), and Earth’s radiation balance. The impact ...
Simultaneous Detection of Ozone and Nitrogen Dioxide by Oxygen Anion Chemical Ionization Mass Spectrometry: A Fast Time Response Sensor Suitable for Eddy Covariance Measurements
(Atmos. Meas. Tech., Published by Copernicus Publications on behalf of the European Geosciences Union., 2020-04-01)
We report on the development, characterization, and field deployment of a fast time response sensor for measuring ozone (O3) and nitrogen dioxide (NO2) concentrations utilizing chemical ionization time-of-flight mass ...
Speciated Volatile Organic Compound Measurements in Downtown Chicago
(2024-06-19)
Real time measurements of ambient volatile organic compounds were made using a Tofwerk’s PTR-ToF-MS equipped with an Aerodyne gas chromatography instrument in downtown Chicago (University of Illinois Science and Engineering ...
Cloud Processing of DMS Oxidation Products Limits SO2 and OCS Production in the Eastern North Atlantic Marine Boundary Layer
(2024-06-19)
Dimethyl sulfide (DMS) is the major sulfur species emitted from the ocean. The gas-phase oxidation of DMS by hydroxyl radicals proceeds through the stable, soluble intermediate hydroperoxymethyl thioformate (HPMTF), ...
Observation-Based Constraints on Modeled Aerosol Surface Area: Implications for Heterogeneous Chemistry
(2022-05)
Heterogeneous reactions occurring at the surface of atmospheric aerosol particles regulate the production and lifetime of a wide array of atmospheric gases. Aerosol surface area plays a critical role in setting the rate ...