Next >>

Wildfires have increased in frequency and area burned, trends expected to continue with climate change. Among other effects, fires release pollutants into the atmosphere, representing a risk to human health and downwind terrestrial and aquatic ecosystems. While human health risks...

Invited Question and Answer article for Nature Cardiovascular Research on Particulate Matter.Recent air-quality alerts in major cities due to the wildfires in Canada, Hawaii and Greece have put fine particulate matter (PM) pollution and consequent health issues into the spotlight...

Atmospheric nitrate is a key atmosphere component with implications for air quality, nutrient deposition, and climate.  However, accurately representing atmospheric nitrate concentrations within atmospheric chemistry models is a persistent challenge.  A contributing fac...

Accurate fire emissions inventories are crucial to predict the impacts of wildland fires on air quality and atmospheric composition. Two traditional approaches are widely used to calculate fire emissions: a satellite-based top-down approach and a fuels-based bottom-up approach. H...

Fires emit sufficient sulfur to affect local and regional air quality and climate. This study analyzes SO2 emission factors and variability in smoke plumes from US wildfires and agricultural fires, as well as their relationship to sulfate and hydroxymethanesulfonate (HMS) fo...

Atmospheric nitrogen (N) and sulfur (S) deposition can significantly affect forest biodiversity and production by altering the growth and survival of trees. Three decades of air quality regulations in the United States have led to large reductions in oxides of N (44–81%) an...

During April 30–August 4, 2023, smoke originating from wildfires in Canada affected most of the contiguous United States. CDC used National Syndromic Surveillance Program data to assess numbers and percentages of asthma-associated emergency department (ED) visits on days wi...

Objectives: California plans to substantially increase the use of prescribed fire to reduce risk of catastrophic wildfires. Although for a beneficial purpose, prescribed fire smoke may still pose a health concern, especially among sensitive populations. We sought to understand co...

To combat the Wildfire Crisis in the U.S., prescribed fire is being instituted at an unprecedented scale. While there are documented examples of the ability of prescribed fire to reduce the size and intensity of individual fires, and subsequently smoke produced, prescribed fire a...

A manuscript describing an analysis to produce an updated value for the ozone-related health impacts of methane emissions, relevant to social cost of carbon calculations.

This study utilizes the reduced-complexity model, Framework for Evaluating Damages and Impacts (FrEDI), to rapidly assess economic and physical impacts of climate change in the contiguous United States (U.S.).

Air quality regulations decreased nitrogen (N) and sulfur deposition across the conterminous United States (CONUS) during the last several decades. But it is unclear if declining deposition has also altered stream N at large scales. We compared watershed N inputs with N chemistry...

Future estimates of atmospheric pollutant concentrations serve as critical information for policy makers to formulate current policy indicators to achieve future targets. Tropospheric burden of O3 is modulated not only by anthropogenic and natural precursor emissions, but also ...

Atmospheric nitrogen (N) and sulfur (S) pollution increased greatly across industrialized temperate regions during much of the 20th century. Despite significant declines in recent decades, N and S deposition continue to negatively affect the distribution of many plant species. We...

Wildfire activity is increasing and can be linked to climate change effects, including rising global temperatures and more frequent drought conditions. Wildfire emissions impact human health and sensitive ecosystems, particularly in the western United States where large fire freq...

Recently, volatile chemical products (VCPs) have been increasingly recognized as important precursors for secondary organic aerosol (SOA) and ozone in urban areas. However, their atmospheric chemistry, physical transformation, and their impact on climate, environment and human he...

The air quality of any given location is the result of complex interactions between meteorology and emissions through dynamical, physical, chemical, and photochemical processes. Of the many sources of air pollution, naturally produced emissions such as nitric oxide (NO) from soil...

The brick kiln industrial sector in South Asia accounts for large amounts of short-lived climate forcer (SLCF) emissions, namely black carbon (BC), organic carbon (OC), and sulfur dioxide (SO2; the precursor to atmospheric sulfate [SO4]). These SLCFs are air pollutants and have i...

  <section style="box-sizing: inherit; display: block;" data-title="Introduction " data-gtm-vis-first-on-screen-50443292_563="37691" data-gtm-vis-total-visible-time-50443292_563="4600" data-gtm-vis-polling-id-50443292_563="607...

In April of 2018, a two-week measurement campaign was conducted to characterize methane and other gas emissions from 15 unconventional oil and natural gas production sites (well pads targeting shale) operated by Southwestern Energy in Ohio County, West Virginia. The sites were su...

Wildland fires are diminishing air quality on a seasonal and regional basis, raising concerns about respiratory health risks to the public and occupational groups. This American Thoracic Society (ATS) workshop was convened to meet the growing health threat of wildland fire smoke....

Abstract: As the climate warms, wildfires are increasing in size and intensity, posing a risk to human health and sensitive ecosystems. Studies have reported on particulate matter (PM) in wildfire smoke; however, the chemicals associated with PM, including toxic metals, have rece...

Objective(s) This study explored the feasibility, acceptability, preliminary impact, and functionality of two risk reduction mobile application (app) interventions on asthma outcomes as compared to a control arm during wildfire season. Design Three-arm, 8-week randomized clinic...

Wildland fires are a major source of gases and aerosols, and the production, dispersion, and transformation of fire emissions have significant ambient air quality impacts and climate interactions. The increase in the wildfire area burned and severity across the US and Canada in r...

Nitrogen oxides (NOx=NO2NO2) play a crucial role in the formation of ozone and secondary inorganic and organic aerosols, thus affecting human health, global radiation budget, and climate. The diurnal and spatial variations in NO2 are functions of emissions, advection, deposition,...