Sector: Transportation
Climate TRACE is a global emissions tracking initiative and online platform that uses satellite observations, remote sensing, and other independent data—combined with AI and machine learning—to estimate greenhouse gas emissions from specific countries, sectors, and large facilities in near real time. It provides publicly accessible maps, dashboards, and downloadable data that let users see where emissions are coming from, how they change over time, and how reported inventories compare to independent estimates, supporting greater transparency and accountability in climate action.
EPA’s Community Multiscale Air Quality (CMAQ) modeling system is an open-source, regional air quality model used to simulate how pollutants such as ozone, PM2.5, and air toxics form and move in the atmosphere. It combines detailed atmospheric chemistry, emissions, and meteorology to estimate pollutant concentrations and deposition over time and space. The CMAQ website provides the model code, documentation, tutorials, input datasets, and example applications, supporting researchers and agencies in evaluating air quality policies, health and ecosystem impacts, and interactions between air quality and climate.
Website providing sample ordinances that allow communities to reduce the amount of noise and air pollution caused by delivery trucks and other vehicles.
NOAA’s HYSPLIT (Hybrid Single-Particle Lagrangian Integrated Trajectory) website provides access to a powerful atmospheric transport and dispersion model used to simulate how airborne pollutants, smoke, dust, volcanic ash, and other particles move and spread in the atmosphere. The site offers model documentation, tutorial materials, downloadable desktop software, and online web-based tools that let users calculate air parcel trajectories, dispersion, and deposition patterns based on meteorological data. It is widely used for air quality studies, emergency response, and research on long-range transport of contaminants.
Factsheet providing information on electric school buses
Fact sheet with case studies of fleet electrification for three different companies.
Website providing information on state, Tribal, and federal implementation plans. Information included on approved state regulations, source specific requirements, and nonregulatory provisions.
Website providing estimates of percent reductions in air pollutant emissions from use of alternative fuels including ethanol, biodiesel, compressed natural gas, propane, and ultra-low sulfur diesel.
Website with information on costs and fuel savings for alternatives to idling for heavy duty trucks.
Case study of a partnership between Maryland Department of the Environment and Cheverly, Maryland to use data from a hyper-local air sensor network and local traffic data to target air emissions inspections.
