Sector: Commercial
GEOS-Chem is an open?source global 3?D chemical transport model used to simulate atmospheric composition, including gases and aerosols, and their chemistry, transport, and deposition. The website provides documentation, installation and run instructions, tutorials, model version information, input datasets, and links to the user community and developer resources. Researchers use it to run simulations for air quality, climate, and biogeochemical cycling studies, and to contribute improvements back to the shared codebase.
EPA’s Human Exposure Model (HEM) is a probabilistic exposure assessment tool used to estimate how people are exposed to contaminants (often air pollutants, but not limited to them) through different pathways and microenvironments. It is designed to support human health risk assessments by translating environmental concentrations into population exposure distributions for specific pollutants, locations, and demographic groups. HEM uses information on contaminant levels, population characteristics, and time–activity patterns to produce quantitative estimates of average and high-end exposures suitable for regulatory analyses and comparative policy evaluations.
Mapping tool providing locations of facilities with air permits in NJ, along with information on air quality, weather, wind speed and direction, and overburdened communities.
Utah website to access funding opportunities for air quality projects. Provides a good example of how to set up a resource that can be used by individuals, companies, or local governments to access information about grants, rebates, tax credits, and financing for local projects.
Website for the South Carolina Efficiency and Conservation Block Grant Program. Provides an example of how to structure a subaward program to fund local projects using US Department of Energy funds.
Repository for the Simple Interactive Models for better air quality set of tools. These tools demonstrate fundamental equations to calculate, visualize, and interpret air emissions and pollution. The tools are intended to make links between emissions, pollution dispersion, impacts, and potential solutions more accessible to a wider set of stakeholders. The tools include models as well as primers on different air quality topics.
Report containing tools to equip development finance institution project officers and portfolio managers with information to design projects that generate air quality benefits. It includes basic information on air quality and health impacts, and ways to integrate air quality in investment decisions. The goal is to increase the volume and types of financing available for air quality programs.
EPA’s COBRA (Co-Benefits Risk Assessment) Health Impacts Screening and Mapping Tool estimates how changes in air emissions—especially from energy and climate policies—affect air pollution levels, health outcomes, and related economic benefits across U.S. counties. Users can input emissions changes or select built-in scenarios, and COBRA uses reduced-form air quality modeling plus health impact and valuation functions to produce quick, screening-level estimates of avoided deaths, illnesses, and monetized health benefits, along with maps and tables for communication and planning.
The HARP Air Dispersion Modeling and Risk Tool, developed by the California Air Resources Board, is Windows-based software that allows users to run air dispersion models and calculate associated health risks from toxic air pollutants. Used primarily in the state’s Hot Spots Analysis & Reporting Program, it integrates modeled concentration outputs with built?in health effect values and demographic data (including a dedicated census database and health database) to support standardized health risk assessments for stationary emission sources in California.
CalEEMod (California Emissions Estimator Model) is a free, statewide land use emissions calculator used to estimate air pollutant and greenhouse gas emissions from development projects in California. It allows planners, consultants, and agencies to input project characteristics (like land use type, size, construction schedule, and operations) and then uses built?in emission factors and default assumptions to quantify construction and operational emissions (e.g., vehicle trips, energy use, area sources). The tool supports CEQA review, air district permitting, and project comparison by providing standardized, transparent emission estimates for proposed developments.
