Related Topics: Air Research

Air Research Products in the Science Inventory

Records 1 to 25 of 369

An examination of a voluntary policy model to effect behavioral change and influence interactions and decision-making in the freight sector (JOURNAL)
An examination of a voluntary policy model to effect behavioral change and influence interactions and decision-making in the freight sector
On-road Emissions and Chemical Transformation of Nitrogen Oxides (JOURNAL)
Nitrogen dioxide (NO2) not only is linked with a number of adverse effects on the respiratory system, but also contributes to the formation of ground-level ozone (O3) and fine particulate matter (PM2.5) pollution. NO2 levels near major roads have been monitored as part of the one...
Predicting Thermal Behavior of Secondary Organic Aerosols (JOURNAL)
Volume concentrations of steady-state secondary organic aerosol (SOA) were measured in 139 steadystate single precursor hydrocarbon oxidation experiments after passing through a temperature controlled inlet tube. Higher temperatures resulted in greater loss of particle volume, wi...
Community vulnerability to health impacts of wildland fire smoke exposure (JOURNAL)
Identifying communities vulnerable to adverse health effects from exposure to wildfire smoke may help prepare responses, increase the resilience to smoke and improve public health outcomes during smoke days. We developed a Community Health-Vulnerability Index (CHVI) based on fact...
Dietary and Pharmacological Intervention to Mitigate the Cardiopulmonary Effects of Air Pollution Toxicity (JOURNAL)
Background: Human exposure to air pollution has long been associated with excess morbidity and mortality. Although regulatory measures carried out under the “Clean Air Act” have saved millions of lives, there are still hundreds of thousands of people in the U.S. that live in area...
Fine Particulate Matter and Cardiovascular Disease: Comparison of Assessment Methods for Long-term Exposure (JOURNAL)
Background Adverse cardiovascular events have been linked with PM2.5 exposure obtained primarily from air quality monitors, which rarely co-locate with participant residences. Modeled PM2.5 predictions at finer resolution may more accurately predict residential exposure; however ...
Reducing emissions from freight transportation the “SmartWay” (JOURNAL)
How to Develop a Green Freight Program
Development and evaluation of a physics-based windblown dust emission scheme implemented in the CMAQ modeling system (JOURNAL)
A new windblown dust emission treatment was incorporated in the Community Multiscale Air Quality (CMAQ) modeling system. This new model treatment has been built upon previously developed physics-based parameterization schemes from the literature. A distinct and novel feature of t...
A Citizen Science and Government Collaboration: Developing Tools to Facilitate Community Air Monitoring (JOURNAL)
The U.S. Environmental Protection Agency (EPA) is actively involved in supporting citizen science projects and providing communities with information and assistance for conducting their own air pollution monitoring. As part of a Regional Applied Research Effort (RARE) project, EP...
Characterizing the impact of projected changes in climate and air quality on human exposures to ozone (JOURNAL)
The impact of climate change on human and environmental health is of critical concern. Population exposures to air pollutants both indoors and outdoors are influenced by a wide range of air quality, meteorological, behavioral, and housing-related factors, many of which are also i...
Assessing the impact of fine particulate matter (PM2.5) on respiratory-cardiovascular chronic diseases in the New York City Metropolitan area using Hierarchical Bayesian Model estimates (JOURNAL)
An enhanced research paradigm is presented to address the spatial and temporal gaps in fine particulate matter (PM2.5) measurements and generate realistic and representative concentration fields for use in epidemiological studies of human exposure to ambient air particulate conce...
Source identification of coarse particles in the Desert Southwest, USA using Positive Matrix Factorization (JOURNAL)
The Desert Southwest Coarse Particulate Matter Study was undertaken to further our understanding of the spatial and temporal variability and sources of fine and coarse particulate matter (PM) in rural, arid, desert environments. Sampling was conducted between February 2009 and Fe...
Multi-perspective observations of NO2 over the Denver area during DISCOVER-AQ: Insights for future monitoring (JOURNAL)
The final deployment in the DISCOVER-AQ1 series of air quality field campaigns focused on the Northern Front Range of Colorado including the Denver Metropolitan Area in July-August 2014. The overarching goal of these campaigns was to improve the interpretation of satellite observ...
Dynamic evaluation of two decades of WRF-CMAQ ozone simulations over the contiguous United States (JOURNAL)
Dynamic evaluation of the fully coupled Weather Research and Forecasting (WRF)– Community Multi-scale Air Quality (CMAQ) model ozone simulations over the contiguous United States (CONUS) using two decades of simulations covering the period from 1990 to 2010 is conducted to ...
Simulating Aqueous-Phase Isoprene-Epoxydiol (IEPOX) Secondary Organic Aerosol Production During the 2013 Southern Oxidant and Aerosol Study (SOAS) (JOURNAL)
The lack of statistically robust relationships between IEPOX (isoprene epoxydiol)-derived SOA (IEPOX SOA) and aerosol liquid water and pH observed during the 2013 Southern Oxidant and Aerosol Study (SOAS) emphasizes the importance of modeling the whole system to understand the co...
Environmental effects of ozone depletion and its interactions with climate change: Progress report, 2016 (JOURNAL)
When considering the effects of climate change, it has become clear that processes resulting in changes in stratospheric ozone are more complex than previously believed. As a result of this, human health and environmental issues will be longer-lasting and more regionally variable...
Alternative futures of dissolved inorganic nitrogen export from the Mississippi River Basin: influence of crop management, atmospheric deposition, and population growth (JOURNAL)
Nitrogen (N) export from the Mississippi River Basin contributes to seasonal hypoxia in the Gulf of Mexico (GOM). We explored monthly dissolved inorganic N (DIN) export to the GOM for a historical year (2002) and two future scenarios (year 2022) by linking macroeonomic energy, ag...
Persistence of initial conditions in continental scale air quality simulations (JOURNAL)
This study investigates the effect of initial conditions (IC) for pollutant concentrations in the atmosphere and soil on simulated air quality for two continental-scale Community Multiscale Air Quality (CMAQ) model applications. One of these applications was performed for springt...
Nitrate radicals and biogenic volatile organic compounds: oxidation, mechanisms, and organic aerosol (JOURNAL)
Oxidation of biogenic volatile organic compounds (BVOC) by the nitrate radical (NO3) represents one of the important interactions between anthropogenic emissions related to combustion and natural emissions from the biosphere. This interaction has been recognized for more than 3 d...
The Impact of Iodide-Mediated Ozone Deposition and Halogen Chemistry on Surface Ozone Concentrations Across the Continental United States (JOURNAL)
The air quality of many large coastal areas in the United States is affected by the confluence of polluted urban and relatively clean marine airmasses, each with distinct atmospheric chemistry. In this context, the role of iodide-mediated ozone (O3) deposition over seawater and m...
Evaluation and error apportionment of an ensemble of atmospheric chemistry transport modeling systems: multivariable temporal and spatial breakdown (JOURNAL)
Through the comparison of several regional-scale chemistry transport modelling systems that simulate meteorology and air quality over the European and American continents, this study aims at i) apportioning the error to the responsible processes using time-scale analysis, ii) hel...
Highlights from the Coordinating Research Council’s 2016 Air Quality Research Needs Workshop: Top 11 ResearchNeeds (JOURNAL)
The Coordinating Research Council (CRC) conducted an Air Quality Research Needs Workshop on February 9-10, 2016 at the Georgia Institute of Technology, in Atlanta, GA. The workshop brought together researchers from academia, government, and industry to brainstorm and prioritize ...
Historical Trends in Pm2.5-Related Premature Mortality During 1990-2010 Across the Northern Hemisphere (JOURNAL)
Background: Air quality across the northern hemisphere over the past two decades has witnessed dramatic changes, with continuous improvement in developed countries in North America and Europe, but a contrasting sharp deterioration in developing regions of Asia. Objective: This s...
A Framework to Quantify the Strength of the Ecological Links Between an Environmental Stressor and Final Ecosystem Services (JOURNAL)
Anthropogenic stressors such as climate change, fire, and pollution are driving shifts in ecosystem function and resilience. Scientists generally rely on biological indicators of these stressors to signal that ecosystem conditions have been altered beyond an acceptable amount. Ho...
Associations between environmental quality and mortality in the contiguous United States 2000-2005 (JOURNAL)
BACKGROUND: Assessing cumulative effects of the multiple environmental factors influencing mortality remains a challenging task. OBJECTIVES: This study aimed to examine the associations between cumulative environmental quality and all-cause and leading cause-specific (heart disea...