Related Topics: Climate Change Research

Climate Change Research Products in the Science Inventory

Records 1 to 25 of 235

Multigenerational Theoretical Study of Isoprene Peroxy Radical 1–5-Hydrogen Shift Reactions that Regenerate HOx Radicals and Produce Highly Oxidized Molecules (JOURNAL)
A computational protocol is employed to glean new insight into the kinetics of several 1,5-hydrogen atom (H) shift reactions subsequent to first- and second-generation OH/O2 additions to isoprene. The M06-2X density functional was initially used with the Nudged Elastic Band (NEB)...
Exposure and Human Health Evaluation of Airborne Pollution from the World Trade Center Disaster (JOURNAL)
In the days following the September 11, 2001, terrorist attack on New York City's World Trade Center (WTC) towers, many Federal agencies, including the U.S. Environmental Protection Agency (EPA), were called upon to bring their technical and scientific expertise to the national e...
Modelling black carbon absorption of solar radiation: combining external and internal mixing assumptions (JOURNAL)
An accurate simulation of the absorption properties is key for assessing the radiative effects of aerosol on meteorology and climate. The representation of how chemical species are mixed inside the particles (the mixing state) is one of the major uncertainty factors in the assess...
A new method for assessing the efficacy of emission control strategies (JOURNAL)
Regional-scale air quality models and observations at routine air quality monitoring sites are used to determine attainment/non-attainment of the ozone air quality standard in the United States. In current regulatory applications, a regional-scale air quality model is applied for...
The potential effects of climate change on air quality across the conterminous US at 2030 under three Representative Concentration Pathways (JOURNAL)
The potential impacts of climate change on regional ozone (O3) and fine particulate (PM2.5) air quality in the United States are investigated by downscaling Community Earth System Model (CESM) global climate simulations with the Weather Research and Forecasting (WRF) model, then ...
Do Changes in Temperature and Inflation Pressure Affect Rolling Resistance During Road and Track Testing for Fuel Economy of Class 8 Tractor-Trailers? (JOURNAL)
Do Changes in Temperature and Inflation Pressure Affect Rolling Resistance During Road and Track Testing for Fuel Economy of Class 8 Tractor-Trailers?
Using a Simple Climate Model to Project Emissions Mitigation Opportunities in the Transportation Sector (JOURNAL)
An analysis of mobile carbon capture methods
A Maieutic Exploration of Nudging Strategies for Regional Climate Applications Using the WRF Model (JOURNAL)
The use of nudging in the Weather Research and Forecasting (WRF) Model to constrain regional climate downscaling simulations is gaining in popularity because it can reduce error and improve consistency with the driving data. While some attention has been paid to whether nudging i...
Long-term evaluation of air sensor technology under ambient conditions in Denver, Colorado (JOURNAL)
Air pollution sensors are quickly proliferating for use in a wide variety of applications, with a low price point that supports use in high-density networks, citizen science, and individual consumer use. This emerging technology motivates the assessment under real-world condition...
Can Air Quality Management Drive Sustainable Fuels Management at the Temperate Wildland-Urban Interface? (JOURNAL)
Sustainable fire management has eluded all industrial societies. Given increasing wildfire events and magnitude, prescribed burning is promoted as the key to reducing fire hazard, but resultant smoke can adversely affect public health and compliance with air quality standards. Ho...
Modeling and Controls Development of 48V Mild Hybrid Electric Vehicles (JOURNAL)
The Advanced Light-Duty Powertrain and Hybrid Analysis tool (ALPHA) was created by EPA to evaluate the Greenhouse Gas (GHG) emissions of Light-Duty (LD) vehicles. It is a physics-based, forward-looking, full vehicle computer simulator capable of analyzing various vehicle types c...
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...
Key Issues for Seamless Integrated Chemistry–Meteorology Modeling (JOURNAL)
Online coupled meteorology–atmospheric chemistry models have greatly evolved in recent years. Although mainly developed by the air quality modeling community, these integrated models are also of interest for numerical weather prediction and climate modeling, as they can con...
The Southeast Atmosphere Studies (SAS): coordinated investigation and discovery to answer critical questions about fundamental atmospheric processes (JOURNAL)
The Southeast Atmosphere Studies (SAS), encompassing the Southern Oxidant and Aerosol Study (SOAS), the Southeast Nexus of Air Quality and Climate (SENEX) study, the Nitrogen, Oxidants, Mercury and Aerosols: Distributions, Sources and Sinks (NOMADSS) study deployed in the field f...
A framework for expanding aqueous chemistry in the Community Multiscale Air Quality (CMAQ) model version 5.1 (JOURNAL)
This paper describes the development and implementation of an extendable aqueous-phase chemistry option (AQCHEM − KMT(I)) for the Community Multiscale Air Quality (CMAQ) modeling system, version 5.1. Here, the Kinetic PreProcessor (KPP), version 2.2.3, is used to generate a Rosen...
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...
Projecting state-level air pollutant emissions using an integrated assessment model: GCAM-USA. (JOURNAL)
Integrated Assessment Models (IAMs) characterize the interactions among human and earth systems. IAMs typically have been applied to investigate future energy, land use, and emission pathways at global to continental scales. Recent directions in IAM development include enhanced t...
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...
Chemical transport model simulations of organic aerosol in southern California: model evaluation and gasoline and diesel source contributions (JOURNAL)
Gasoline- and diesel-fueled engines are ubiquitous sources of air pollution in urban environments. They emit both primary particulate matter and precursor gases that react to form secondary particulate matter in the atmosphere. In this work, we updated the organic aerosol module ...
Semivolatile POA and parameterized total combustion SOA in CMAQv5.2: impacts on source strength and partitioning (JOURNAL)
Mounting evidence from field and laboratory observations coupled with atmospheric model analyses shows that primary combustion emissions of organic compounds dynamically partition between the vapor and particulate phases, especially as near-source emissions dilute and cool to amb...
Emissions from Prescribed Burning of Agricultural Fields in the Pacific Northwest (JOURNAL)
Prescribed burns of winter wheat stubble and Kentucky bluegrass fields in northern Idaho and eastern Washington states (U.S.A.) were sampled using ground-, aerostat-, airplane-, and laboratory-based measurement platforms to determine emission factors, compare methods, and provide...
Light absorption of secondary organic aerosol: Composition and contribution of nitro-aromatic compounds (JOURNAL)
Secondary organic aerosol (SOA) might affect the atmospheric radiation balance through absorbing light at shorter visible and UV wavelengths. However, the composition and optical properties of light-absorbing SOA is poorly understood. In this work, SOA filter samples were collect...
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 dise...
Climate change impacts on projections of excess mortality at 2030 using spatially varying ozone-temperature (JOURNAL)
We project the change in ozone-related mortality burden attributable to changes in climate between a historical (1995-2005) and near-future (2025-2035) time period while incorporating a non-linear and synergistic effect of ozone and temperature on mortality. We simulate air quali...
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...