Doug R. Worsnop
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View article: New particle formation dynamics in the central Andes: contrasting urban and mountaintop environments
New particle formation dynamics in the central Andes: contrasting urban and mountaintop environments Open
In this study, we investigate atmospheric new particle formation (NPF) across 65 d in the Bolivian central Andes at two locations: the mountaintop Chacaltaya station (CHC, 5.2 km above sea level) and an urban site in El Alto–La Paz (EAC), …
View article: The evolution of nucleation- and Aitken-mode particle compositions in a boreal forest environment during clean and pollution-affected new-particle formation events
The evolution of nucleation- and Aitken-mode particle compositions in a boreal forest environment during clean and pollution-affected new-particle formation events Open
View article: A comprehensive evaluation of enhanced temperature influence on gas and aerosol chemistry in the lamp-enclosed oxidation flow reactor (OFR) system
A comprehensive evaluation of enhanced temperature influence on gas and aerosol chemistry in the lamp-enclosed oxidation flow reactor (OFR) system Open
Oxidation flow reactors (OFRs) have been extensively utilized to examine the formation of secondary organic aerosol (SOA). However, the UV lamps typically employed to initiate the photochemistry in OFRs can result in an elevated reactor te…
View article: New Particle Formation dynamics in the central Andes: Contrasting urban and mountain-top environments
New Particle Formation dynamics in the central Andes: Contrasting urban and mountain-top environments Open
In this study, we investigate atmospheric new particle formation (NPF) across 65 days in the Bolivian Central Andes at two locations: the mountain-top Chacaltaya station (CHC, 5.2 km above sea level) and an urban site in El Alto-La Paz (EA…
View article: Supplementary material to "New Particle Formation dynamics in the central Andes: Contrasting urban and mountain-top environments"
Supplementary material to "New Particle Formation dynamics in the central Andes: Contrasting urban and mountain-top environments" Open
View article: Identifying the seeding signature in cloud particles from hydrometeor residuals
Identifying the seeding signature in cloud particles from hydrometeor residuals Open
Cloud seeding experiments for modifying clouds and precipitation have been underway for nearly a century; yet practically all the attempts to link precipitation enhancement or suppression to the presence of seeding materials within clouds …
View article: Measurements of Atmospheric Aerosol with the Vaporization Inlet for Aerosols and the Filter Inlet for Gases and Aerosols on a Bipolar Multi-Reagent Chemical Ionization Mass Spectrometer
Measurements of Atmospheric Aerosol with the Vaporization Inlet for Aerosols and the Filter Inlet for Gases and Aerosols on a Bipolar Multi-Reagent Chemical Ionization Mass Spectrometer Open
Atmospheric aerosols can be composed of a wide variety of organic and inorganic chemicals, which can dramatically affect the environmental impact of the particles. Understanding the chemical composition of aerosol assists in understanding …
View article: Comment on amt-2023-230
Comment on amt-2023-230 Open
Abstract. Oxidation flow reactors (OFRs) have been widely used to investigate the formation of secondary organic aerosol (SOA). However, the UV lamps that are commonly used to initiate photochemistry in OFRs can lead to in…
View article: Comment on amt-2023-230
Comment on amt-2023-230 Open
Abstract. Oxidation flow reactors (OFRs) have been widely used to investigate the formation of secondary organic aerosol (SOA). However, the UV lamps that are commonly used to initiate photochemistry in OFRs can lead to in…
View article: Nanoparticle ranking analysis: determining new particle formation (NPF) event occurrence and intensity based on the concentration spectrum of formed (sub-5 nm) particles
Nanoparticle ranking analysis: determining new particle formation (NPF) event occurrence and intensity based on the concentration spectrum of formed (sub-5 nm) particles Open
Here we introduce a new method, termed “nanoparticle ranking analysis”, for characterizing new particle formation (NPF) from atmospheric observations. Using daily variations of the particle number concentration at sizes immediately above t…
View article: Comment on amt-2023-230
Comment on amt-2023-230 Open
Abstract. Oxidation flow reactors (OFRs) have been widely used to investigate the formation of secondary organic aerosol (SOA). However, the UV lamps that are commonly used to initiate photochemistry in OFRs can lead to in…
View article: Supplementary material to "A comprehensive evaluation of enhanced temperature influence on gas and aerosol chemistry in the lamp-enclosed oxidation flow reactor (OFR) system"
Supplementary material to "A comprehensive evaluation of enhanced temperature influence on gas and aerosol chemistry in the lamp-enclosed oxidation flow reactor (OFR) system" Open
View article: A comprehensive evaluation of enhanced temperature influence on gas and aerosol chemistry in the lamp-enclosed oxidation flow reactor (OFR) system
A comprehensive evaluation of enhanced temperature influence on gas and aerosol chemistry in the lamp-enclosed oxidation flow reactor (OFR) system Open
Oxidation flow reactors (OFRs) have been widely used to investigate the formation of secondary organic aerosol (SOA). However, the UV lamps that are commonly used to initiate photochemistry in OFRs can lead to increases in the reactor temp…
View article: Comment on amt-2023-171
Comment on amt-2023-171 Open
Abstract. Cloud seeding experiments for modifying cloud and precipitation have been underway for nearly a century; yet practically all the attempts to link precipitation enhancement or suppression to the presence of seedin…
View article: Supplementary material to "Identifying the seeding signature in cloud particles from hydrometeor residuals"
Supplementary material to "Identifying the seeding signature in cloud particles from hydrometeor residuals" Open
View article: Identifying the seeding signature in cloud particles from hydrometeor residuals
Identifying the seeding signature in cloud particles from hydrometeor residuals Open
Cloud seeding experiments for modifying cloud and precipitation have been underway for nearly a century; yet practically all the attempts to link precipitation enhancement or suppression to the presence of seeding materials remained inclus…
View article: Comment on ar-2023-5
Comment on ar-2023-5 Open
Abstract. Here we introduce a new method, termed “Nano Ranking Analysis,” for characterizing new particle formation (NPF) from atmospheric observations. Using daily variations of the particle number concentration at sizes …
View article: Nano Ranking Analysis: determining NPF event occurrence and intensity based on the concentration spectrum of formed (sub-5 nm) particles
Nano Ranking Analysis: determining NPF event occurrence and intensity based on the concentration spectrum of formed (sub-5 nm) particles Open
Here we introduce a new method, termed “Nano Ranking Analysis,” for characterizing new particle formation (NPF) from atmospheric observations. Using daily variations of the particle number concentration at sizes immediately above the conti…
View article: Laboratory study of the heterogeneous ice nucleation on black-carbon-containing aerosol
Laboratory study of the heterogeneous ice nucleation on black-carbon-containing aerosol Open
Soot and black carbon (BC) particles are generated in the incomplete combustion of fossil fuels, biomass, and biofuels. These airborne particles affect air quality, human health, aerosol–cloud interactions, precipitation formation, and cli…
View article: Laboratory study of the heterogeneous ice nucleation on black carbon containing aerosol
Laboratory study of the heterogeneous ice nucleation on black carbon containing aerosol Open
Black carbon (BC) particles are generated in the incomplete combustion of fossil fuels, biomass, and biofuels. These airborne particles affect air quality, human health, and climate. At present, the climate effects of BC particles are not …
View article: Kinetically controlled glass transition measurement of organic aerosol thin films using broadband dielectric spectroscopy
Kinetically controlled glass transition measurement of organic aerosol thin films using broadband dielectric spectroscopy Open
Glass transitions from liquid to semi-solid and solid phase states have important implications for reactivity, growth, and cloud-forming (cloud condensation nuclei and ice nucleation) capabilities of secondary organic aerosols (SOAs). The …
View article: Kinetic Controlled Glass Transition Measurement of Organic Aerosol Thin FilmsUsing Broadband Dielectric Spectroscopy
Kinetic Controlled Glass Transition Measurement of Organic Aerosol Thin FilmsUsing Broadband Dielectric Spectroscopy Open
Glass transitions from liquid to semi-solid and solid phase states have important implications for reactivity, growth, and cloud forming (cloud condensation nuclei and ice nucleation) capabilities of secondary organic aerosols (SOA). The s…
View article: Supplementary material to "Kinetic Controlled Glass Transition Measurement of Organic Aerosol Thin FilmsUsing Broadband Dielectric Spectroscopy"
Supplementary material to "Kinetic Controlled Glass Transition Measurement of Organic Aerosol Thin FilmsUsing Broadband Dielectric Spectroscopy" Open