Aged and Obscured Wildfire Smoke Associated with Downwind Health Risks
Joo T, Rogers M, Soong C, Hass-Mitchell T, Heo S, Bell M, Ng N, Gentner D. Aged and Obscured Wildfire Smoke Associated with Downwind Health Risks. Environmental Science & Technology Letters 2024 DOI: 10.1021/acs.estlett.4c00785.Peer-Reviewed Original ResearchWildfire smokeSmoke episodeHealth risksWildfire smoke episodeHealth risk assessmentAerosol Chemical Speciation MonitorAerosol mass spectrometryPM2.5 contributionsPotential health effectsSource apportionmentWildfire impactsWildfire activityPM2.5 measurementsPM2.5 monitoringDays of transportParticulate matterPM2.5Air pollutionSpeciation monitorElevated health risksContinental influencePeak episodesSmoke transportClimate changeChemical agingReal-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 change