Arlene M. Fiore
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View article: Contrasting Air Pollution Responses to Hourly Varying Anthropogenic NO <sub>x</sub> Emissions in the Contiguous United States
Contrasting Air Pollution Responses to Hourly Varying Anthropogenic NO <sub>x</sub> Emissions in the Contiguous United States Open
Monthly mean concentrations of air pollutants such as tropospheric nitrogen dioxide (NO2) columns retrieved from satellite instruments are frequently used to infer NOx emissions. An underlying assumption, also implicit in some global model…
View article: Supplementary material to "Contrasting Air Pollution Responses to Hourly Varying Anthropogenic NO <sub>x</sub> Emissions in the Contiguous United States"
Supplementary material to "Contrasting Air Pollution Responses to Hourly Varying Anthropogenic NO <sub>x</sub> Emissions in the Contiguous United States" Open
View article: Global hotspots and mechanisms of extreme humid heat and air pollution co-occurrence
Global hotspots and mechanisms of extreme humid heat and air pollution co-occurrence Open
Exposure to extreme humid heat and air pollution each represent significant, well-characterized environmental hazards to human health. But the questions of where, when, and why they may co-occur, and whether humid heat may exacerbate pollu…
View article: Supplementary material to "Global hotspots and mechanisms of extreme humid heat and air pollution co-occurrence"
Supplementary material to "Global hotspots and mechanisms of extreme humid heat and air pollution co-occurrence" Open
View article: A graph theory-based algorithm for the reduction of atmospheric chemical mechanisms
A graph theory-based algorithm for the reduction of atmospheric chemical mechanisms Open
The atmospheric chemistry of volatile organic compounds (VOC) has a major influence on atmospheric pollutants and particle formation. Accurate modeling of this chemistry is essential for air quality models. Complete representations of VOC …
View article: Detecting tropospheric composition and climate responses to US air pollution controls in the context of internally-arising variability
Detecting tropospheric composition and climate responses to US air pollution controls in the context of internally-arising variability Open
Since the 1970s, air pollutant emissions controls in the United States (US) have lowered concentrations of ozone (O 3 ) and aerosols, which have opposing radiative effects on surface temperature. Using a pair of initial-condition ensembles…
View article: A Graph Theory-Based Algorithm for the Reduction of Atmospheric Chemical Mechanisms
A Graph Theory-Based Algorithm for the Reduction of Atmospheric Chemical Mechanisms Open
The atmospheric chemistry of volatile organic compounds (VOC) has a major influence on atmospheric pollutants and particle formation. Accurate modeling of this chemistry is essential for air quality models. Complete representations of VOC …
View article: Opinion: Beyond global means – novel space-based approaches to indirectly constrain the concentrations of and trends and variations in the tropospheric hydroxyl radical (OH)
Opinion: Beyond global means – novel space-based approaches to indirectly constrain the concentrations of and trends and variations in the tropospheric hydroxyl radical (OH) Open
The hydroxyl radical (OH) plays a central role in tropospheric chemistry, as well as influencing the lifetimes of some greenhouse gases. Because of limitations in our ability to observe OH, we have historically relied on indirect methods t…
View article: Origin and Limits of Invariant Warming Patterns in Climate Models
Origin and Limits of Invariant Warming Patterns in Climate Models Open
Climate models exhibit an approximately invariant surface warming pattern in typical end-of-century projections. This observation has been used extensively in climate impact assessments for fast calculations of local temperature anomalies,…
View article: Are Hourly PM2.5 Forecasts Sufficiently Accurate to Plan Your Day? Individual Decision Making in the Face of Increasing Wildfire Smoke
Are Hourly PM2.5 Forecasts Sufficiently Accurate to Plan Your Day? Individual Decision Making in the Face of Increasing Wildfire Smoke Open
Wildfire frequency is increasing as the climate changes, and the resulting air pollution poses health risks. Just as people routinely use hourly weather forecasts to plan their day's activities around precipitation, reliable hourly air qua…
View article: Spatially Resolved Temperature Response Functions to CO<sub>2</sub> Emissions
Spatially Resolved Temperature Response Functions to CO<sub>2</sub> Emissions Open
Carbon dioxide (CO 2 ) emissions affect local temperature; quantifying that local response is important for learning about the earth system, the impacts of mitigation, and adaptation needs. We assume the climate system can be represented a…
View article: bneR - A collaborative workflow for air quality modeling and uncertainty characterization using the Bayesian Nonparametric Ensemble
bneR - A collaborative workflow for air quality modeling and uncertainty characterization using the Bayesian Nonparametric Ensemble Open
View article: Opinion: Beyond Global Means: Novel Space-Based Approaches to Indirectly Constrain the Concentrations, Trends, and Variations of Tropospheric Hydroxyl Radical (OH)
Opinion: Beyond Global Means: Novel Space-Based Approaches to Indirectly Constrain the Concentrations, Trends, and Variations of Tropospheric Hydroxyl Radical (OH) Open
The hydroxyl radical (OH) plays a central role in tropospheric chemistry as well as influencing the lifetimes of some climate gases, such as methane. Because of limitations in our ability to observe OH, we have historically relied on indir…
View article: Data and code for "Anthropogenic fingerprint detectable in upper tropospheric ozone trends retrieved from satellite" (Yu et al. 2024, ES&T)
Data and code for "Anthropogenic fingerprint detectable in upper tropospheric ozone trends retrieved from satellite" (Yu et al. 2024, ES&T) Open
Data and code for "Anthropogenic fingerprint detectable in upper tropospheric ozone trends retrieved from satellite" (Yu et al. 2024, ES&T)
View article: Evaluating the Impact of Resolving Hourly Anthropogenic Emissions on Air Pollutant Simulations in the United States Using the MUSICAv0 Model
Evaluating the Impact of Resolving Hourly Anthropogenic Emissions on Air Pollutant Simulations in the United States Using the MUSICAv0 Model Open
The capacity of chemical transport models to accurately simulate air pollutant concentrations and their diurnal changes is essential for pollution source attribution and exposure risk assessment. The Community Earth System Model (CESM) inc…
View article: Comment on egusphere-2023-2743
Comment on egusphere-2023-2743 Open
Abstract. State of the art chemistry-climate models (CCMs) still show biases compared to ground level ozone observations, illustrating remaining difficulties and challenges in the simulation of atmospheric processes govern…
View article: Ozone-related acute excess mortality projected to increase in the absence of climate and air quality controls consistent with the Paris Agreement
Ozone-related acute excess mortality projected to increase in the absence of climate and air quality controls consistent with the Paris Agreement Open
View article: Climate and Tropospheric Oxidizing Capacity
Climate and Tropospheric Oxidizing Capacity Open
The hydroxyl radical (OH) largely controls the tropospheric self-cleansing capacity by reacting with gases harmful to the environment and human health. OH concentrations are determined locally by competing production and loss processes. La…
View article: Data and code for "Anthropogenic fingerprint detectable in upper troposphere ozone trends retrieved from satellite" (Xinyuan et al. 2023 submit to PNAS)
Data and code for "Anthropogenic fingerprint detectable in upper troposphere ozone trends retrieved from satellite" (Xinyuan et al. 2023 submit to PNAS) Open
Data and code for "Anthropogenic fingerprint detectable in upper troposphere ozone trends retrieved from satellite" (Yu et al. 2023 submit to PNAS)
View article: Technical note: An assessment of the performance of statistical bias correction techniques for global chemistry-climate model surface ozone fields
Technical note: An assessment of the performance of statistical bias correction techniques for global chemistry-climate model surface ozone fields Open
State of the art chemistry-climate models (CCMs) still show biases compared to ground level ozone observations, illustrating remaining difficulties and challenges in the simulation of atmospheric processes governing ozone production and lo…
View article: Supplementary material to "Technical note: An assessment of the performance of statistical bias correction techniques for global chemistry-climate model surface ozone fields"
Supplementary material to "Technical note: An assessment of the performance of statistical bias correction techniques for global chemistry-climate model surface ozone fields" Open
View article: Evaluating the spatial patterns of U.S. urban NOx emissions using TROPOMI NO2
Evaluating the spatial patterns of U.S. urban NOx emissions using TROPOMI NO2 Open
Satellite nitrogen dioxide (NO2) datasets are increasingly used to evaluate nitrogen oxides (NOx) emissions inventories. Such studies often use a chemical transport model or a complex statistical framework involving an assumed NO2 lifetime…
View article: An observation-based, reduced-form model for oxidation in the remote marine troposphere
An observation-based, reduced-form model for oxidation in the remote marine troposphere Open
The hydroxyl radical (OH) fuels atmospheric chemical cycling as the main sink for methane and a driver of the formation and loss of many air pollutants, but direct OH observations are sparse. We develop and evaluate an observation-based pr…
View article: Implementation and Evaluation of the Automated Model Reduction (AMORE) Version 1.1 Isoprene Oxidation Mechanism in GEOS-Chem
Implementation and Evaluation of the Automated Model Reduction (AMORE) Version 1.1 Isoprene Oxidation Mechanism in GEOS-Chem Open
Detailed chemical mechanisms are computationally challenging to include in large-scale chemical transport models such as GEOS-Chem. Employing a graph theory-based automated model reduction (AMORE) algorithm, we developed a new reduced (12 …
View article: Spatially Resolved Temperature Response Functions to CO2 Emissions
Spatially Resolved Temperature Response Functions to CO2 Emissions Open
The ability to rapidly simulate the climate implications of a large number of CO2 emissions trajectories is helpful for implementing mitigation and adaptation policies. A key variable of interest is near-surface air temperature, which is a…
View article: Arctic warming in response to regional aerosol emissions reductions
Arctic warming in response to regional aerosol emissions reductions Open
This study examines the Arctic surface air temperature response to regional aerosol emissions reductions using three fully coupled chemistry–climate models: National Center for Atmospheric Research-Community Earth System Model version 1, G…
View article: Evaluating the spatial patterns of NOx emissions in polluted areas with TROPOMI NO2
Evaluating the spatial patterns of NOx emissions in polluted areas with TROPOMI NO2 Open
Satellite datasets are increasingly used to evaluate NOx emissions inventories. Such studies often require the use of a chemical transport model or a complex statistical framework to account for meteorological factors that can complicate t…
View article: Higher‐Resolution Tropopause Folding Accounts for More Stratospheric Ozone Intrusions
Higher‐Resolution Tropopause Folding Accounts for More Stratospheric Ozone Intrusions Open
Ozone in the troposphere is a pollutant and greenhouse gas, and it is crucial to better understand its transport from the ozone‐rich stratosphere. Tropopause folding, wherein stratospheric air intrudes downward into the troposphere, enable…
View article: AMORE-Isoprene v1.0: a new reduced mechanism for gas-phase isoprene oxidation
AMORE-Isoprene v1.0: a new reduced mechanism for gas-phase isoprene oxidation Open
Gas-phase oxidation of isoprene by ozone (O3) and the hydroxyl (OH) and nitrate (NO3) radicals significantly impacts tropospheric oxidant levels and secondary organic aerosol formation. The most comprehensive and up-to-date chemical mechan…
View article: Automated Machine Learning to Evaluate the Information Content of Tropospheric Trace Gas Columns for Fine Particle Estimates Over India: A Modeling Testbed
Automated Machine Learning to Evaluate the Information Content of Tropospheric Trace Gas Columns for Fine Particle Estimates Over India: A Modeling Testbed Open
India is largely devoid of high‐quality and reliable on‐the‐ground measurements of fine particulate matter (PM 2.5 ). Ground‐level PM 2.5 concentrations are estimated from publicly available satellite Aerosol Optical Depth (AOD) products c…