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The health effects of exposure to wildfire smoke are well described and include exacerbations of respiratory and cardiovascular conditions such as asthma, chronic obstructive pulmonary disease, and heart disease (1). It is important for healthcare professionals to be equipped wit...

<w:PermStart w:id="2067676263" w:edGrp="everyone"/> The U.S. Environmental Protection Agency (EPA) Dynamically Downscaled Ensemble version 2 (EDDEv2) contains 3D physics-based projections of future conditions and extreme events over a model domain with ...

Crop residues hold promise to alleviate food vs. fuel competition and contribute to biofuel production. However, the impacts of lateral sediment and carbon fluxes caused by residue removal are not fully understood. Here we employ agroecosystem modeling to conservatively estimate ...

Accurate representation of aerosol size distributions and total number concentrations is critical for evaluating particle impacts on climate, clouds, and public health. An Advanced Particle Microphysics model (APM) has been integrated into the USEPA's Community Multiscale Air Qua...

Biofuels play a key role in reducing greenhouse gas (GHG) emissions and enhancing energy security. Since the 1970s, U.S. biofuel policies have positioned the country as a leading ethanol producer. The Renewable Fuel Standard (RFS), introduced in 2005, significantly increased etha...

Biological nitrogen fixation (BNF) is the largest natural source of new nitrogen (N) that supports terrestrial productivity1,2, yet estimates of global terrestrial BNF remain highly uncertain3,4. Here we show that this uncertainty is partly because of sampling bias, as field...

Methane sensing technologies have wide application across environmental fields including oil and gas development and landfill and agricultural emissions monitoring. Anthropogenic emissions account for the majority of the global methane budget, and component-based methane emission...

The escalating frequency and severity of global wildfires necessitate an in-depth understanding and monitoring of wildfire smoke impacts, specifically its contribution to fine particulate matter (PM2.52.5). We propose a data-fusion method to study wildfire contribution to PM2.52....

Clouds are important physicochemical processors of atmospheric pollutants. Major contributors to secondary sulfate, clouds also provide media for the production and processing of secondary organic aerosol (SOA). Sulfate and organic compounds often dominate particulate mass, and t...

Rationale & Objectives: Wildfire smoke is associated with short-term respiratory outcomes including asthma exacerbation in children. As investigations into developmental exposure to wildfire smoke exposure (WSE) on children’s longer-term respiratory health are sparse, w...

Wildfire smoke risks are not uniformly distributed across people and places, and the most vulnerable communities are often disproportionately impacted. This study develops a Community Health Vulnerability Index (CHVI) using three major vulnerability components: adaptive capacity,...

Despite decades of emission control measuresaimed at improving air quality, Los Angeles (LA) continues toexperience severe ozone pollution during the summertime. Weincorporate cooking volatile organic compound (VOC) emissionsin a chemical transport model and evaluate it against o...

A portion of Alaska’s Fairbanks North Star Borough was designated as nonattainment for the 2006 24 h fine particulate matter 2.5 µm or less in diameter (PM2.5) National Ambient Air Quality Standards (NAAQS) in 2009. PM2.5 NAAQS exceedances in Fairbanks mainly occur du...

Wildland fire (i.e., prescribed fire and wildfire) smoke exposure is an emerging public health threat, in part due to climate change. Previous research has demonstrated disparities in ambient fine particulate matter (PM2.5) exposure, with Black people, among others, exposed to hi...

This study investigated the effect of relative humidity (RH) on the chemical composition of gas and particle phases formed from the photooxidation of 1,3-butadiene (13BD) in the presence of NOx under acidified andnon-acidified seed aerosol. The experiments were conducted in a 14....

As the number of methods for assessing air pollution exposure proliferate there is a need to understand the utility of these metrics (and their uncertainties) for characterizing exposures in determining potential public health outcomes at different spatial and temporal resolution...

With the increase in acres burned from wildfire over the last few decades, wildfire smoke is an increasing global public health threat. To date, wildfire smoke research, risk communication, and public health action has focused on short-term (or daily) smoke exposures. However, th...

Climate change factors and expanded population growth in the Wildland Urban Interface (transition zone between human structures and undeveloped wildland) contribute to a projected increase in wildfire frequency and smoke exposure. As an unregulated source of air pollution, reduci...

Urban ozone (O3) pollution correlates with temperature, and higher O3 often occurs during heatwaves, threatening public health. However, limited data on how anthropogenic volatile organic compound (AVOC) precursor emissions vary with temperature hinders understanding their i...

Dry deposition of atmospheric aerosols in large-scale models is a critical, but highly uncertain, sink process with a strong dependence on particle size, meteorological conditions, and land surface properties. This study investigates the particle dry deposition scheme implemented...

We used EPA’s ecohydrology model, Visualizing Ecosystem Land Management Assessments (VELMA), to 1) conduct a performance-tested synthesis of long-term Konza Prairie Biological Station (KPBS) experimental data capable of describing the interactive effects of climate, fire, g...

Exposures to airborne allergenic pollen have been increasing under the influence of changing climate. A modeling system incorporating pollen emissions and atmospheric transport and fate processes has been developed and applied to simulate spatiotemporal distributions of two major...

Green-blue-grey infrastructure (GBGI) offers environmental benefits in urban areas, yet its impact on air pollution is under-researched, and the literature fragmented. This review evaluates quantitative studies on GBGI's capability to mitigate air pollution, compares their specif...

This is an invited commentary by the journal - Proceedings of the National Academy of Sciences of the United States of America (PNAS) on a paper they recently accepted examining longer duration wildfire smoke exposure and mortality.  This commentary focuses on highlighting t...

Dry deposition of aerosols from the atmosphere is an important but poorly understood and inadequately modeled process in atmospheric systems for climate and air quality. Comparisons of currently used aerosol dry deposition models to a compendia of published field measurement stud...