Robert M. Healy
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View article: Integrating Simulations and Observations: A Foundation Model for Estimating the Aerosol Mixing State Index
Integrating Simulations and Observations: A Foundation Model for Estimating the Aerosol Mixing State Index Open
International audience
View article: Distribution of semi-volatile organic compounds, metals, and biological activities in two industrialized cities in Ontario, Canada using passive air sampling
Distribution of semi-volatile organic compounds, metals, and biological activities in two industrialized cities in Ontario, Canada using passive air sampling Open
Passive air sampling enabled targeted characterization of semi-volatile pollutants and endocrine disrupting activities impacting two industrialized cities in Ontario, Canada.
View article: Mobile Laboratory Investigations of Industrial Point Source Emissions during the MOOSE Field Campaign
Mobile Laboratory Investigations of Industrial Point Source Emissions during the MOOSE Field Campaign Open
Industrial emissions of trace gases and VOCs can be an important contributor to air quality in cities. Disentangling different point sources from each other and characterizing their emissions can be particularly challenging in dense indust…
View article: The Michigan–Ontario Ozone Source Experiment (MOOSE): An Overview
The Michigan–Ontario Ozone Source Experiment (MOOSE): An Overview Open
The Michigan–Ontario Ozone Source Experiment (MOOSE) is an international air quality field study that took place at the US–Canada Border region in the ozone seasons of 2021 and 2022. MOOSE addressed binational air quality issues stemming f…
View article: Spatially Resolved Source Apportionment of Industrial VOCs Using a Mobile Monitoring Platform
Spatially Resolved Source Apportionment of Industrial VOCs Using a Mobile Monitoring Platform Open
Industrial emissions of volatile organic compounds (VOCs) directly impact air quality downwind of facilities and contribute to regional ozone and secondary organic aerosol production. Positive matrix factorization (PMF) is often used to ap…
View article: Mitigation of SARS-CoV-2 Transmission at a Large Public University
Mitigation of SARS-CoV-2 Transmission at a Large Public University Open
In the Fall of 2020, many universities saw extensive transmission of SARS-CoV-2 among their populations, threatening the health of students, faculty and staff, the viability of in-person instruction, and the health of surrounding communiti…
View article: Traffic-related air pollution near roadways: discerning local impacts from background
Traffic-related air pollution near roadways: discerning local impacts from background Open
Adverse health outcomes related to exposure to air pollution have gained much attention in recent years, with a particular emphasis on traffic-related pollutants near roadways, where concentrations tend to be most severe. As such, many pro…
View article: Review of ‘A new method to quantify mineral dust and other aerosol species from aircraft platforms using single particle mass spectrometry’
Review of ‘A new method to quantify mineral dust and other aerosol species from aircraft platforms using single particle mass spectrometry’ Open
Froyd and coauthors describe an approach to quantification of dust and specific aerosol species (organics, sulfate) using single particle mass spectrometer (SPMS) measurement data combined with concurrent scattering-based particle counting…
View article: Traffic-related air pollution near roadways: discerning local impacts from background
Traffic-related air pollution near roadways: discerning local impacts from background Open
Adverse health outcomes related to exposure to air pollution have gained much attention in recent years, with a particular emphasis on traffic-related pollutants near roadways, where concentrations tend to be most severe. As such, many pro…
View article: Heavy metals in the near-road environment: Results of semi-continuous monitoring of ambient particulate matter in the greater Toronto and Hamilton area
Heavy metals in the near-road environment: Results of semi-continuous monitoring of ambient particulate matter in the greater Toronto and Hamilton area Open
Six heavy metals - Mn, Fe, Cu, Zn, Se, and Pb among other elemental species were monitored in ambient PM2.5 at three near-road ambient air monitoring locations in the Greater Toronto and Hamilton Area (GTHA) with semi-continuous X-ray fluo…
View article: Sources of particulate matter components in the Athabasca oil sands region: investigation through a comparison of trace element measurement methodologies
Sources of particulate matter components in the Athabasca oil sands region: investigation through a comparison of trace element measurement methodologies Open
The province of Alberta, Canada, is home to three oil sands regions which, combined, contain the third largest deposit of oil in the world. Of these, the Athabasca oil sands region is the largest. As part of Environment and Climate Change …
View article: Sources and mixing state of summertime background aerosol in the north-western Mediterranean basin
Sources and mixing state of summertime background aerosol in the north-western Mediterranean basin Open
An aerosol time-of-flight mass spectrometer (ATOFMS) was employed to provide real-time single particle mixing state and thereby source information for aerosols impacting the western Mediterranean basin during the ChArMEx-ADRIMED and SAF-ME…
View article: Supplementary material to "Sources of Particulate Matter in the Athabasca Oil Sands Region: Investigation through a Comparison of Trace Element Measurement Methodologies"
Supplementary material to "Sources of Particulate Matter in the Athabasca Oil Sands Region: Investigation through a Comparison of Trace Element Measurement Methodologies" Open
The Xact incorporates several Quality Assurance and Quality Control measures.With each measurement the instrument takes, it simultaneously measures the concentration of a Pd rod that is located within the instrument to ensure measurement s…
View article: Sources of Particulate Matter in the Athabasca Oil Sands Region: Investigation through a Comparison of Trace Element Measurement Methodologies
Sources of Particulate Matter in the Athabasca Oil Sands Region: Investigation through a Comparison of Trace Element Measurement Methodologies Open
The province of Alberta, Canada is home to three oil sands regions which, combined, contain the third largest deposit of oil in the world. Of these, the Athabasca Oil Sands Region is the largest. As part of Environment and Climate Change C…
View article: Supplementary material to "Sources and mixing state of summertime background aerosol in the northwestern Mediterranean basin"
Supplementary material to "Sources and mixing state of summertime background aerosol in the northwestern Mediterranean basin" Open
Table 1.Pearson's correlation coefficient (R 2 ) between mass concentrations from ATOFMS (PM2.5),TEOM (PM10 & PM1), ACSM (PM1), PILS (PM10) and MAAP (PM2.5)measurements and OPS number concentrations (#/cm 3 ) for the full sampling period, …
View article: Sources and mixing state of summertime background aerosol in the northwestern Mediterranean basin
Sources and mixing state of summertime background aerosol in the northwestern Mediterranean basin Open
An aerosol time-of-flight mass spectrometer (ATOFMS) was employed to provide real-time single particle mixing state and thereby source information for aerosols impacting the western Mediterranean basin during the ChArMEx-ADRIMED and SAF-ME…
View article: Single-particle characterization of biomass burning organic aerosol (BBOA): evidence for non-uniform mixing of high molecular weight organics and potassium
Single-particle characterization of biomass burning organic aerosol (BBOA): evidence for non-uniform mixing of high molecular weight organics and potassium Open
Biomass burning organic aerosol (BBOA) can be emitted from natural forest fires and human activities such as agricultural burning and domestic energy generation. BBOA is strongly associated with atmospheric brown carbon (BrC) that absorbs …
View article: Quantification of black carbon mixing state from traffic: implications for aerosol optical properties
Quantification of black carbon mixing state from traffic: implications for aerosol optical properties Open
The climatic impacts of black carbon (BC) aerosol, an important absorber of solar radiation in the atmosphere, remain poorly constrained and are intimately related to its particle-scale physical and chemical properties. Using particle-reso…
View article: Field Measurements of Gasoline Direct Injection Emission Factors: Spatial and Seasonal Variability
Field Measurements of Gasoline Direct Injection Emission Factors: Spatial and Seasonal Variability Open
Four field campaigns were conducted between February 2014 and January 2015 to measure emissions from light-duty gasoline direct injection (GDI) vehicles (2013 Ford Focus) in an urban near-road environment in Toronto, Canada. Measurements o…
View article: Quantification of black carbon mixing state from traffic: implications for aerosol optical properties
Quantification of black carbon mixing state from traffic: implications for aerosol optical properties Open
The climatic impacts of black carbon (BC) aerosol, an important absorber of solar radiation in the atmosphere, remain poorly constrained and are intimately related to its particle-scale physical and chemical properties. Using particle-reso…
View article: Single particle characterization of biomass burning organic aerosol (BBOA): evidence for non-uniform mixing of high molecular weight organics and potassium
Single particle characterization of biomass burning organic aerosol (BBOA): evidence for non-uniform mixing of high molecular weight organics and potassium Open
Biomass burning is a major source of black carbon (BC) and primary organic aerosol globally. In particular, biomass burning organic aerosol (BBOA) is strongly associated with atmospheric brown carbon (BrC) that absorbs near ultraviolet and…