Real-world observations of reduced nitrogen and ultrafine particles in commercial cooking organic aerosol emissions
Kim S, Machesky J, Gentner D, Presto A. Real-world observations of reduced nitrogen and ultrafine particles in commercial cooking organic aerosol emissions. Atmospheric Chemistry And Physics 2024, 24: 1281-1298. DOI: 10.5194/acp-24-1281-2024.Peer-Reviewed Original ResearchOrganic aerosolAerosol mass spectraParticle number concentrationFine particulate matterUltrafine particlesSize distribution measurementsOA massNumber concentrationPM massUrban backgroundMobile laboratoryParticulate matterRestaurant emissionsPlumeAerosolMass spectral differencesReal world observationsPM sizeUrban ultrafine particlesReduced nitrogenOxygen-containing functional groupsDistribution measurementsSpectral differencesPM2.5Sampled restaurantsIncreasing Contributions of Temperature-Dependent Oxygenated Organic Aerosol to Summertime Particulate Matter in New York City
Hass-Mitchell T, Joo T, Rogers M, Nault B, Soong C, Tran M, Seo M, Machesky J, Canagaratna M, Roscioli J, Claflin M, Lerner B, Blomdahl D, Misztal P, Ng N, Dillner A, Bahreini R, Russell A, Krechmer J, Lambe A, Gentner D. Increasing Contributions of Temperature-Dependent Oxygenated Organic Aerosol to Summertime Particulate Matter in New York City. ACS ES&T Air 2024, 1: 113-128. PMID: 39309979, PMCID: PMC11415007, DOI: 10.1021/acsestair.3c00037.Peer-Reviewed Original ResearchOxygenated organic aerosolCooking-related organic aerosolHydrocarbon-like organic aerosolOrganic aerosolParticulate matterAerosol source apportionmentFraction of OAAverage PM2.5 concentrationPositive matrix factorizationSpeciated particulate matterAir quality policiesOOA factorsAerosol compositionAerosol componentsSummertime concentrationsGas-phase measurementsObservation networkPM2.5 concentrationsSource apportionmentSecondary OASpatiotemporal variationsHeat eventsAerosolSummertimeClimate changeSecondary Brown Carbon Formation From Photooxidation of Furans From Biomass Burning
Joo T, Machesky J, Zeng L, Hass‐Mitchell T, Weber R, Gentner D, Ng N. Secondary Brown Carbon Formation From Photooxidation of Furans From Biomass Burning. Geophysical Research Letters 2024, 51 DOI: 10.1029/2023gl104900.Peer-Reviewed Original ResearchNitrogen-containing organic compoundsBrown carbon formationSecondary organic aerosolSecondary Brown CarbonOrganic compoundsBrown carbonCarbon formationAmmonium sulfate seed aerosolSulfate seed aerosolOptical propertiesReduced nitrogen speciesVolatile organic compoundsAccretion reactionsBiomass burningAmmonium sulfate aerosolsFurfural oxidationBrC formationSeed aerosolAtmospheric oxidantsOrganic aerosolPhotochemical agingGas-phase carbonHigh reactivityAmbient biomassPhotooxidation