J. L. Jiménez
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View article: Investigating fire-induced ozone production from local to global scales
Investigating fire-induced ozone production from local to global scales Open
Tropospheric ozone (O3) production from wildfires is highly uncertain; previous studies have identified both production and loss of O3 in fire-influenced air masses. To capture the total ozone production attributable to a smoke plume, we b…
View article: A nitrate photolysis source of tropospheric HONO is incompatible with current understanding of atmospheric chemistry
A nitrate photolysis source of tropospheric HONO is incompatible with current understanding of atmospheric chemistry Open
Recent observations of nitrous acid (HONO) in the remote troposphere show much higher concentrations than can be explained through known sources, with important implications for air quality and climate. Laboratory evidence and modelling of…
View article: Nitrogen Oxides in the Remote Marine Environment: Implications for Oceanic Emissions and Photolysis of Particulate Nitrate
Nitrogen Oxides in the Remote Marine Environment: Implications for Oceanic Emissions and Photolysis of Particulate Nitrate Open
Nitric oxide (NO) in the remote marine atmosphere is underestimated by chemistry‐climate models. We explore the potential oceanic emissions of NO and its impacts using a global chemistry‐climate model with a newly developed oceanic NO emis…
View article: Particulate Matter Concentrations Derived from Airborne High Spectral Resolution Lidar Measurements Using Machine Learning Regression
Particulate Matter Concentrations Derived from Airborne High Spectral Resolution Lidar Measurements Using Machine Learning Regression Open
We use measurements of near-surface aerosol backscatter, extinction, and depolarization acquired by four NASA Langley Research Center airborne High Spectral Resolution Lidars (HSRLs) in machine learning (ML) regression algorithms to derive…
View article: Evaluation of UKESM aerosol size and composition using ATom measurements indicates missing marine aerosol formation mechanisms
Evaluation of UKESM aerosol size and composition using ATom measurements indicates missing marine aerosol formation mechanisms Open
Atmospheric aerosols influence climate through their interactions with radiation and clouds, yet large uncertainties remain in their simulation by global models. This study evaluates the United Kingdom Earth System Model version 1.1 (UKESM…
View article: Supplementary material to "Simulated reductions in Heterogeneous Isoprene Epoxydiol Reactive Uptake from aerosol morphology in the contiguous United States using the Community Multiscale Air Quality Model (CMAQv5.3.2)"
Supplementary material to "Simulated reductions in Heterogeneous Isoprene Epoxydiol Reactive Uptake from aerosol morphology in the contiguous United States using the Community Multiscale Air Quality Model (CMAQv5.3.2)" Open
View article: Simulated reductions in Heterogeneous Isoprene Epoxydiol Reactive Uptake from aerosol morphology in the contiguous United States using the Community Multiscale Air Quality Model (CMAQv5.3.2)
Simulated reductions in Heterogeneous Isoprene Epoxydiol Reactive Uptake from aerosol morphology in the contiguous United States using the Community Multiscale Air Quality Model (CMAQv5.3.2) Open
Aerosol particles contain complex mixtures of polar and non-polar species that can undergo organic-inorganic phase separations. In phase-separated aerosol particles, the phase state of the outer organic coating can modulate heterogeneous c…
View article: High-resolution multi-pollutant mapping in Denver, Colorado
High-resolution multi-pollutant mapping in Denver, Colorado Open
Characterizing traffic-related air pollutants (TRAPs), which significantly impact health, and greenhouse gases (GHGs) can be challenging in urban environments. Mobile monitoring has the potential to capture the spatial distribution of thes…
View article: The Impact of UVC Light on Indoor Air Chemistry: A Modeling Study
The Impact of UVC Light on Indoor Air Chemistry: A Modeling Study Open
Germicidal ultraviolet light (GUV) is gaining attention for air disinfection, particularly following the COVID-19 pandemic. GUV air cleaning devices use 222 or 254 nm light to remove airborne and surface pathogens from indoor environments,…
View article: Year-Round Analysis of Multiphase Sulfate Production in Aerosol Particles in East Asia
Year-Round Analysis of Multiphase Sulfate Production in Aerosol Particles in East Asia Open
Missing sulfate production pathways have been implicated as the cause of model underestimates of sulfate during haze events in East Asia. We add multiphase oxidation of SO2 in aerosol particles by H2O2, O
View article: Mitigation of Indoor Air Pollution from Air Cleaners Using a Catalyst
Mitigation of Indoor Air Pollution from Air Cleaners Using a Catalyst Open
View article: Examining the Effects of Parameterized Changes in the Chemical Composition of Wildfire Emissions on Forecasted Air Quality
Examining the Effects of Parameterized Changes in the Chemical Composition of Wildfire Emissions on Forecasted Air Quality Open
View article: Development and characterization of an aircraft inlet system for broader quantitative particle sampling at higher altitudes: aerodynamic lenses, beam and vaporizer diagnostics, and pressure-controlled inlets
Development and characterization of an aircraft inlet system for broader quantitative particle sampling at higher altitudes: aerodynamic lenses, beam and vaporizer diagnostics, and pressure-controlled inlets Open
Field-deployable real-time aerosol mass spectrometers (AMSs) typically use an aerodynamic lens as an inlet that collimates aerosols into a narrow beam over a wide range of particle sizes. Such lenses need constant upstream pressure to work…
View article: Estimates of submicron particulate matter (PM1) concentrations for 1998–2022 across the contiguous USA: leveraging measurements of PM1 with nationwide PM2·5 component data
Estimates of submicron particulate matter (PM1) concentrations for 1998–2022 across the contiguous USA: leveraging measurements of PM1 with nationwide PM2·5 component data Open
National Institute of Environmental Health Sciences, National Institutes of Health.
View article: Ten scientific reasons in support of airborne transmission of SARS-CoV-2
Ten scientific reasons in support of airborne transmission of SARS-CoV-2 Open
View article: Positive matrix factorization of large real-time atmospheric mass spectrometry datasets using error-weighted randomized hierarchical alternating least squares
Positive matrix factorization of large real-time atmospheric mass spectrometry datasets using error-weighted randomized hierarchical alternating least squares Open
Weighted positive matrix factorization (PMF) has been used by scientists to find small sets of underlying factors in environmental data. However, as the size of the data has grown, increasing computational costs have made it impractical to…
View article: Supplementary material to "Investigating fire-induced ozone production from local to global scales"
Supplementary material to "Investigating fire-induced ozone production from local to global scales" Open
View article: Investigating fire-induced ozone production from local to global scales
Investigating fire-induced ozone production from local to global scales Open
Tropospheric ozone (O3) production from wildfires is highly uncertain; previous studies have identified both production and loss of O3 in fire-influenced air masses. To capture the total ozone production attributable to a smoke plume, we b…
View article: Transmission of SARS-CoV-2: still up in the air – Authors' reply
Transmission of SARS-CoV-2: still up in the air – Authors' reply Open
View article: Mitigation of indoor air pollution from air cleaners using a catalyst
Mitigation of indoor air pollution from air cleaners using a catalyst Open
The COVID-19 pandemic highlighted the importance of indoor air quality and the role of airborne transmission in disease spread. Heightened public awareness led to an increase in the commercialization and use of air cleaners. While several …
View article: Global Model of Atmospheric Chlorate on Earth
Global Model of Atmospheric Chlorate on Earth Open
Naturally occurring chlorate (ClO 3 − ) has been observed on Earth and potentially plays important roles in hydrology and mineralogy on Mars. However, natural sources of chlorate are uncertain. Here, we quantify the importance of atmospher…
View article: Observations of tropospheric HONO are incompatible with understanding of atmospheric chemistry
Observations of tropospheric HONO are incompatible with understanding of atmospheric chemistry Open
Recent observations of nitrous acid (HONO) in the remote troposphere found much higher concentrations than can be explained through known sources, with important implications for air quality and climate. Laboratory evidence and modelling o…
View article: Supplementary material to "Observations of tropospheric HONO are incompatible with understanding of atmospheric chemistry"
Supplementary material to "Observations of tropospheric HONO are incompatible with understanding of atmospheric chemistry" Open
View article: Supplementary material to "Development, Characterization and Rapid Diagnostics of an Aircraft Aerosol Mass Spectrometer Inlet System"
Supplementary material to "Development, Characterization and Rapid Diagnostics of an Aircraft Aerosol Mass Spectrometer Inlet System" Open
View article: Development, Characterization and Rapid Diagnostics of an Aircraft Aerosol Mass Spectrometer Inlet System
Development, Characterization and Rapid Diagnostics of an Aircraft Aerosol Mass Spectrometer Inlet System Open
Field-deployable real-time aerosol mass spectrometers typically use an aerodynamic lens as an inlet that collimates aerosols into a narrow beam over a wide range of particle sizes. Such lenses need constant upstream pressure to work consis…
View article: Humid Summers Promote Urban Aqueous‐Phase Production of Oxygenated Organic Aerosol in the Northeastern United States
Humid Summers Promote Urban Aqueous‐Phase Production of Oxygenated Organic Aerosol in the Northeastern United States Open
Aqueous‐phase uptake and processing of water‐soluble organic compounds can promote secondary organic aerosol (SOA) production. We evaluated the contributions of aqueous‐phase chemistry to summertime urban SOA at two sites in New York City.…
View article: Exploring the processes controlling secondary inorganic aerosol: evaluating the global GEOS-Chem simulation using a suite of aircraft campaigns
Exploring the processes controlling secondary inorganic aerosol: evaluating the global GEOS-Chem simulation using a suite of aircraft campaigns Open
Secondary inorganic aerosols (sulfate, nitrate, and ammonium, SNA) are major contributors to fine particulate matter. Predicting concentrations of these species is complicated by the cascade of processes that control their abundance, inclu…
View article: Implementation of Futures Markets in the Livestock Sector of Sucre, Colombia: A Volatility Modeling Approach
Implementation of Futures Markets in the Livestock Sector of Sucre, Colombia: A Volatility Modeling Approach Open
View article: Fine Particle pH and Sensitivity to NH<sub>3</sub> and HNO<sub>3</sub> over South Korea During KORUS-AQ
Fine Particle pH and Sensitivity to NH<sub>3</sub> and HNO<sub>3</sub> over South Korea During KORUS-AQ Open
Using a new approach that constrains thermodynamic modeling of aerosol composition with measured gas-to-particle partitioning of inorganic nitrate, we estimate the acidity levels for aerosol sampled in the South Korean planetary boundary l…
View article: Evolution of Reactive Organic Compounds and Their Potential Health Risk in Wildfire Smoke
Evolution of Reactive Organic Compounds and Their Potential Health Risk in Wildfire Smoke Open
Wildfires are an increasing source of emissions into the air, with health effects modulated by the abundance and toxicity of individual species. In this work, we estimate reactive organic compounds (ROC) in western U.S. wildland forest fir…