John E. Shilling
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View article: ARM FY2026 Aerosol Operations Plan
ARM FY2026 Aerosol Operations Plan Open
View article: Revisiting the Effects of Seed Liquid Water Content on Isoprene Secondary Organic Aerosol Growth
Revisiting the Effects of Seed Liquid Water Content on Isoprene Secondary Organic Aerosol Growth Open
Aerosol liquid water content (LWC) has been shown to enhance partitioning of water-soluble oxygenated organic vapors into the aerosol particles and facilitate aqueous chemistry, impact SOA formation, composition, and physicochemical proper…
View article: Investigation of Bara-Baruga (mangrove) ecosystem recovery after a hail storm in Boambee Creek, Gumbaynggirr, NSW
Investigation of Bara-Baruga (mangrove) ecosystem recovery after a hail storm in Boambee Creek, Gumbaynggirr, NSW Open
Context Understanding the causes of decline in mangrove forests requires on-ground investigations, which are best conducted in collaboration with Traditional Knowledge Holders. Aims To compare the ecological communities and contaminants in…
View article: Chemical Evolution of Biomass Burning Aerosols across Wildfire Plumes in the Western U.S.: From Near-Source to Regional Scales
Chemical Evolution of Biomass Burning Aerosols across Wildfire Plumes in the Western U.S.: From Near-Source to Regional Scales Open
The atmospheric processing of biomass burning organic aerosol (BBOA) and its implications for tropospheric aerosol physicochemical properties remain uncertain. To address this gap, we investigate the chemical transformation of BBOA from wi…
View article: Assessment of Extinction‐, Satellite‐, and Model‐Based Vertical Cloud Condensation Nuclei (CCN) Retrieval Methods Using Airborne CCN Measurements Over the Southern Great Plains
Assessment of Extinction‐, Satellite‐, and Model‐Based Vertical Cloud Condensation Nuclei (CCN) Retrieval Methods Using Airborne CCN Measurements Over the Southern Great Plains Open
Accurate estimates of the vertical profile of cloud condensation nuclei (CCN) concentration are crucial to better quantify aerosol‐cloud interactions. We assessed the correlation between the vertical CCN concentrations obtained from extinc…
View article: Simulating Droplet-Resolved Haze and Cloud Chemistry Forming Secondary Organic Aerosols in Turbulent Conditions within Laboratory and Cloud Parcels
Simulating Droplet-Resolved Haze and Cloud Chemistry Forming Secondary Organic Aerosols in Turbulent Conditions within Laboratory and Cloud Parcels Open
Most models do not explicitly simulate droplet-resolved cloud chemistry and the interactions between turbulence and cloud chemistry due to large associated computational costs. Here, we incorporate the formation of isoprene epoxydiol secon…
View article: Kinetic Modeling of Secondary Organic Aerosol in a Weather-Chemistry Model: Parameterizations, Processes, and Predictions for GOAmazon
Kinetic Modeling of Secondary Organic Aerosol in a Weather-Chemistry Model: Parameterizations, Processes, and Predictions for GOAmazon Open
Secondary organic aerosol (SOA) forms and evolves in the atmosphere through many pathways and processes, over diverse spatial and time scales. Hence, there is a need to represent these widely-varying kinetic processes in large-scale atmosp…
View article: Atmospheric Radiation Measurement (ARM) airborne field campaign data products between 2013 and 2018
Atmospheric Radiation Measurement (ARM) airborne field campaign data products between 2013 and 2018 Open
Airborne measurements are pivotal for providing detailed, spatiotemporally resolved information about atmospheric parameters and aerosol and cloud properties, thereby enhancing our understanding of dynamic atmospheric processes. For 30 yea…
View article: ARM FY2025 Aerosol Operations Plan
ARM FY2025 Aerosol Operations Plan Open
View article: Anthropogenic Extremely Low Volatility Organics (ELVOCs) Govern the Growth of Molecular Clusters Over the Southern Great Plains During the Springtime
Anthropogenic Extremely Low Volatility Organics (ELVOCs) Govern the Growth of Molecular Clusters Over the Southern Great Plains During the Springtime Open
New particle formation (NPF) often drives cloud condensation nuclei concentrations and the processes governing nucleation of molecular clusters vary substantially in different regions. The growth of these clusters from ∼2 to >10 nm diamete…
View article: Atmospheric Radiation Measurement (ARM) airborne field campaign data products between 2013 and 2018
Atmospheric Radiation Measurement (ARM) airborne field campaign data products between 2013 and 2018 Open
Airborne measurements are pivotal for providing detailed, spatiotemporally resolved information about atmospheric parameters, and aerosol and cloud properties, thereby enhancing our understanding of dynamic atmospheric processes. For 30 ye…
View article: Observation-constrained kinetic modeling of isoprene SOA formation in the atmosphere
Observation-constrained kinetic modeling of isoprene SOA formation in the atmosphere Open
Isoprene has the largest global non-methane hydrocarbon emission, and the oxidation of isoprene plays a crucial role in the formation of secondary organic aerosol (SOA). Two primary processes are known to contribute to SOA formation from i…
View article: Comment on egusphere-2024-97
Comment on egusphere-2024-97 Open
Abstract. Isoprene has the largest global non-methane hydrocarbon emission, and the oxidation of isoprene plays a crucial role in the formation of secondary organic aerosols (SOA). Two primary processes are known to contri…
View article: Comment on egusphere-2024-97
Comment on egusphere-2024-97 Open
Abstract. Isoprene has the largest global non-methane hydrocarbon emission, and the oxidation of isoprene plays a crucial role in the formation of secondary organic aerosols (SOA). Two primary processes are known to contri…
View article: Supplementary material to "Observation-Constrained Kinetic Modelling of Isoprene SOA Formation in the Atmosphere"
Supplementary material to "Observation-Constrained Kinetic Modelling of Isoprene SOA Formation in the Atmosphere" Open
View article: Observation-Constrained Kinetic Modelling of Isoprene SOA Formation in the Atmosphere
Observation-Constrained Kinetic Modelling of Isoprene SOA Formation in the Atmosphere Open
Isoprene has the largest global non-methane hydrocarbon emission, and the oxidation of isoprene plays a crucial role in the formation of secondary organic aerosols (SOA). Two primary processes are known to contribute to SOA formation from …
View article: Examining the vertical heterogeneity of aerosols over the Southern Great Plains
Examining the vertical heterogeneity of aerosols over the Southern Great Plains Open
Atmospheric aerosols affect the global energy budget by scattering and absorbing sunlight (direct effects) and by changing the microphysical structure, lifetime, and coverage of clouds (indirect effects). Both aerosol direct and indirect e…
View article: Retrieved Number Concentration of Cloud Condensation Nuclei (RNCCN) Profile Value-Added Product Report
Retrieved Number Concentration of Cloud Condensation Nuclei (RNCCN) Profile Value-Added Product Report Open
The cloud condensation nuclei (CCN) concentration at cloud base is the most relevant measure of the aerosol that influences droplet formation in clouds. Since the CCN concentration depends on supersaturation, a more general measure of the …
View article: Nonequilibrium Behavior in Isoprene Secondary Organic Aerosol
Nonequilibrium Behavior in Isoprene Secondary Organic Aerosol Open
Recent studies have shown that instantaneous gas-particle equilibrium partitioning assumptions fail to predict SOA formation, even at high relative humidity (∼85%), and photochemical aging seems to be one driving factor. In this study, we …
View article: ARM FY2024 Aerosol Operations Plan
ARM FY2024 Aerosol Operations Plan Open
The Atmospheric Radiation Measurement user facility (ARM) deploys a suite of aerosol and trace gas (further mentions of aerosols will assume inclusion of trace gases) instrumentation at each of ARM's observatories. ARM currently deploys fi…
View article: Comment on egusphere-2023-830
Comment on egusphere-2023-830 Open
Abstract. Atmospheric aerosols affect the global energy budget by scattering and absorbing sunlight (direct effects) and by changing the microphysical structure, lifetime, and coverage of clouds (indirect effects). Both ae…
View article: Comment on egusphere-2023-830
Comment on egusphere-2023-830 Open
Abstract. Atmospheric aerosols affect the global energy budget by scattering and absorbing sunlight (direct effects) and by changing the microphysical structure, lifetime, and coverage of clouds (indirect effects). Both ae…
View article: Examining the vertical heterogeneity of aerosols over the Southern Great Plains
Examining the vertical heterogeneity of aerosols over the Southern Great Plains Open
Atmospheric aerosols affect the global energy budget by scattering and absorbing sunlight (direct effects) and by changing the microphysical structure, lifetime, and coverage of clouds (indirect effects). Both aerosol direct and indirect e…
View article: Supplementary material to "Examining the vertical heterogeneity of aerosols over the Southern Great Plains"
Supplementary material to "Examining the vertical heterogeneity of aerosols over the Southern Great Plains" Open
Fig. S1.Vertical profiles of (a) carbon monoxide mixing ratio (CO), (b) ozone mixing ratio (O3), and (c) sulfur dioxide mixing ratio (SO2) over the SGP site during the spring IOP (blue) and summer IOP (red).The line and circle markers repr…
View article: Optical modeling of a radioisotope atmospheric chamber
Optical modeling of a radioisotope atmospheric chamber Open
View article: Cloud Condensation Nuclei Closure Study Using Airborne Measurements Over the Southern Great Plains
Cloud Condensation Nuclei Closure Study Using Airborne Measurements Over the Southern Great Plains Open
Airborne measurements of non‐refractory bulk aerosol chemical composition, aerosol size distributions, and cloud condensation nuclei (CCN) were conducted onboard a research aircraft during the Holistic Interactions of Shallow Clouds, Aeros…
View article: Look Up: Probing the Vertical Profile of New Particle Formation and Growth in the Planetary Boundary Layer With Models and Observations
Look Up: Probing the Vertical Profile of New Particle Formation and Growth in the Planetary Boundary Layer With Models and Observations Open
The processes of new particle formation (NPF) and growth are important contributors to cloud condensation nuclei (CCN) concentrations, and CCN are important for climate from their impact on planetary radiative forcing. While the general ub…
View article: Airborne flux measurements of ammonia over the southern Great Plains using chemical ionization mass spectrometry
Airborne flux measurements of ammonia over the southern Great Plains using chemical ionization mass spectrometry Open
Ammonia (NH3) is an abundant trace gas in the atmosphere and an important player in atmospheric chemistry, aerosol formation and the atmosphere–surface exchange of nitrogen. The accurate determination of NH3 emission rates remains a challe…
View article: Data for EMSL Project 50100 from February 2023
Data for EMSL Project 50100 from February 2023 Open
View article: Data for EMSL Project 50100 from February 2023
Data for EMSL Project 50100 from February 2023 Open