Ryan C. Sullivan
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View article: Global Simulations Suggest Biomass Burning Aerosol Emissions From Grassland Fires Could Be Important Ice Nucleating Particles
Global Simulations Suggest Biomass Burning Aerosol Emissions From Grassland Fires Could Be Important Ice Nucleating Particles Open
Ice nucleating particles (INP) capable of nucleating ice crystals via immersion freezing at temperatures above approximately −35°C may strongly influence cloud glaciation, with implications for global precipitation and climate feedback. In…
View article: Basins of Attraction for Third-Order Sigmoid Beverton Holt Difference Equation
Basins of Attraction for Third-Order Sigmoid Beverton Holt Difference Equation Open
The third-order difference equation yn+1=a1yn21+yn2+a2yn−121+yn−12+a3yn−221+yn−22, as a potential discrete time model of population dynamics with three generation involved, is studied. The parts of the basins of attraction of three equilib…
View article: Spontaneous Oxidation of Nitrous Acid to Nitric Acid in Supermicron Aqueous Droplets Is Acid-Accelerated
Spontaneous Oxidation of Nitrous Acid to Nitric Acid in Supermicron Aqueous Droplets Is Acid-Accelerated Open
It is generally assumed that acidic submicron atmospheric aerosol particles do not constitute a significant sink for nitrous acid (HONO), as this weak acid would remain protonated and volatile, yet the uptake of HONO to larger less acidic …
View article: Analysis of nano- and micro- particles in ice cores from polar and high altitude glaciers by spICP-TOFMS
Analysis of nano- and micro- particles in ice cores from polar and high altitude glaciers by spICP-TOFMS Open
Due to its small particle size, nanoparticle (NPs) and and microparticles (μPs) could reside in the air for a long time affecting human health and the environment. Understanding of its sources and dynamics in the atmosphere remains a …
View article: Challenges in measuring nanoparticles and microparticles by single particle ICP-QMS and ICP-TOFMS: size-dependent transport efficiency and limited linear dynamic range
Challenges in measuring nanoparticles and microparticles by single particle ICP-QMS and ICP-TOFMS: size-dependent transport efficiency and limited linear dynamic range Open
The transport efficiency of microparticles larger than ∼700 nm decreases with size. While SiO 2 particles as large as 5 µm are completely vaporized in the ICP, the ion detection system limited linear dynamic range will often require signal…
View article: Carbon Adsorbent Properties Impact Hydrated Electron Activity and Perfluorocarboxylic Acid (PFCA) Destruction
Carbon Adsorbent Properties Impact Hydrated Electron Activity and Perfluorocarboxylic Acid (PFCA) Destruction Open
Carbon-based adsorbents used to remove recalcitrant water contaminants, including perfluoroalkyl substances (PFAS), are often regenerated using energy-intensive treatments that can form harmful byproducts. We explore mechanisms for sorbent…
View article: Conflicts of Interest in the Assessment of Chemicals, Waste, and Pollution
Conflicts of Interest in the Assessment of Chemicals, Waste, and Pollution Open
Pollution by chemicals and waste impacts human and ecosystem health on regional, national, and global scales, resulting, together with climate change and biodiversity loss, in a triple planetary crisis. Consequently, in 2022, countries agr…
View article: The Surface Atmosphere Integrated Field Laboratory (SAIL) Campaign
The Surface Atmosphere Integrated Field Laboratory (SAIL) Campaign Open
The science of mountainous hydrology spans the atmosphere through the bedrock and inherently crosses physical and disciplinary boundaries: land–atmosphere interactions in complex terrain enhance clouds and precipitation, while watersheds r…
View article: Aging-Associated Augmentation of Gut Microbiome Virulence Capability Drives Sepsis Severity
Aging-Associated Augmentation of Gut Microbiome Virulence Capability Drives Sepsis Severity Open
Older adults suffer more frequent and worse outcomes from sepsis, a critical illness secondary to infection. The reasons underlying this unique susceptibility are incompletely understood.
View article: Aging-associated augmentation of gut microbiome virulence capability drives sepsis severity
Aging-associated augmentation of gut microbiome virulence capability drives sepsis severity Open
Prior research has focused on host factors as mediators of exaggerated sepsis-associated morbidity and mortality in older adults. This focus on the host, however, has failed to identify therapies that improve sepsis outcomes in the elderly…
View article: Soil diversity on Mars: comparison between Gale and Jezero craters
Soil diversity on Mars: comparison between Gale and Jezero craters Open
International audience
View article: A universally applicable method of calculating confidence bands for ice nucleation spectra derived from droplet freezing experiments
A universally applicable method of calculating confidence bands for ice nucleation spectra derived from droplet freezing experiments Open
A suite of generally applicable statistical methods based on empirical bootstrapping is presented for calculating uncertainty and testing the significance of quantitative differences in temperature and/or ice active site densities between …
View article: Preventing spread of aerosolized infectious particles during medical procedures: A lab-based analysis of an inexpensive plastic enclosure
Preventing spread of aerosolized infectious particles during medical procedures: A lab-based analysis of an inexpensive plastic enclosure Open
Severe viral respiratory diseases, such as SARS-CoV-2, are transmitted through aerosol particles produced by coughing, talking, and breathing. Medical procedures including tracheal intubation, extubation, dental work, and any procedure inv…
View article: Response to Referee 1
Response to Referee 1 Open
Abstract. A suite of generally applicable statistical methods based on empirical bootstrapping is presented for calculating uncertainty and testing the significance of quantitative differences in temperature and/or ice active site densitie…
View article: Response to Referee 2
Response to Referee 2 Open
Abstract. A suite of generally applicable statistical methods based on empirical bootstrapping is presented for calculating uncertainty and testing the significance of quantitative differences in temperature and/or ice active site densitie…
View article: Comment on amt-2022-141
Comment on amt-2022-141 Open
A suite of generally applicable statistical methods based on empirical bootstrapping is presented for calculating uncertainty and testing the significance of quantitative differences in temperature and/or ice active site densities between …
View article: Comment on amt-2022-141
Comment on amt-2022-141 Open
Abstract. A suite of generally applicable statistical methods based on empirical bootstrapping is presented for calculating uncertainty and testing the significance of quantitative differences in temperature and/or ice active site densitie…
View article: A universally applicable method of calculating confidence bands for ice nucleation spectra derived from droplet freezing experiments
A universally applicable method of calculating confidence bands for ice nucleation spectra derived from droplet freezing experiments Open
A suite of generally applicable statistical methods based on empirical bootstrapping is presented for calculating uncertainty and testing the significance of quantitative differences in temperature and/or ice active site densities between …
View article: Volcanic ash ice nucleation activity is variably reduced by aging in water and sulfuric acid: the effects of leaching, dissolution, and precipitation
Volcanic ash ice nucleation activity is variably reduced by aging in water and sulfuric acid: the effects of leaching, dissolution, and precipitation Open
The ice nucleation activity of volcanic ash can change when exposed to liquid water or aqueous sulfuric acid through a complex interplay of geochemical alteration mechanisms.
View article: Endothelial glycocalyx degradation during sepsis: Causes and consequences
Endothelial glycocalyx degradation during sepsis: Causes and consequences Open
The glycocalyx is a ubiquitous structure found on endothelial cells that extends into the vascular lumen. It is enriched in proteoglycans, which are proteins attached to the glycosaminoglycans heparan sulfate, chondroitin sulfate, dermatan…
View article: Aerosol–Ice Formation Closure: A Southern Great Plains Field Campaign
Aerosol–Ice Formation Closure: A Southern Great Plains Field Campaign Open
Prediction of ice formation in clouds presents one of the grand challenges in the atmospheric sciences. Immersion freezing initiated by ice-nucleating particles (INPs) is the dominant pathway of primary ice crystal formation in mixed-phase…
View article: Surface Atmosphere Integrated Field Laboratory (SAIL) Science Plan
Surface Atmosphere Integrated Field Laboratory (SAIL) Science Plan Open
Mountains are the natural water towers of the world, effectively turning water vapor into readily available fresh water through precipitation, snowpack, and runoff. Unfortunately, Earth system models (ESMs) have persistently been unable to…
View article: Atmospheric aging enhances the ice nucleation ability of biomass-burning aerosol
Atmospheric aging enhances the ice nucleation ability of biomass-burning aerosol Open
Ability of biomass-burning smoke particles to glaciate clouds increases as the plume undergoes atmospheric dilution and aging.
View article: Single-particle elemental analysis of vacuum bag dust samples collected from the International Space Station by SEM/EDX and sp-ICP-ToF-MS
Single-particle elemental analysis of vacuum bag dust samples collected from the International Space Station by SEM/EDX and sp-ICP-ToF-MS Open
Air quality on board the International Space Station (ISS) is a significant concern for the long-term health of astronauts living on the station. Aerosolized particles are generated from a variety of sources, such as on-board equipment, el…
View article: Single-particle elemental analysis of vacuum bag dust samples collected from the International Space Station by SEM/EDX and sp-ICP-ToF-MS
Single-particle elemental analysis of vacuum bag dust samples collected from the International Space Station by SEM/EDX and sp-ICP-ToF-MS Open
Air quality on board the International Space Station (ISS) is a significant concern for the long-term health of astronauts living on the station. Aerosolized particles are generated from a variety of sources, such as on-board equipment, el…
View article: A simple, effective enclosure with disposable coverings for inexpensive containment of aerosolized COVID viruses during tracheal intubation and extubation
A simple, effective enclosure with disposable coverings for inexpensive containment of aerosolized COVID viruses during tracheal intubation and extubation Open
Structured Abstract Background SARS-CoV-2 (COVID-19) is a severe respiratory virus that can be transmitted through aerosol particles produced by coughing, talking, and breathing. Medical procedures used to treat severe cases such as trache…