The NASA Earthdata Air Quality portal provides access to satellite observations, airborne measurements, ground-based data, models, and analytical tools that support air quality monitoring, research, and decision-making. The portal brings together a wide range of Earth observation datasets on aerosols, trace gases (including nitrogen dioxide, sulfur dioxide, carbon monoxide, and ozone), meteorologi...

This research article examines how the spatial resolution of air quality models influences estimates of the health benefits associated with reductions in air pollution. Using the Community Multiscale Air Quality (CAMx) model and the U.S. EPA’s BenMAP health benefits assessment tool, the authors compare health impact estimates generated at 36 km, 12 km, and 4 km resolutions across nine regions in t...

Ambient fine particulate matter (PM2.5) is a growing issue in Ho Chi Minh City (HCMC), the most populous province in Viet Nam. Estimating the benefits of reducing PM2.5 levels has still been sparse in HCMC. The study used the Environmental Benefits Mapping and Analysis Program – Community Edition (BenMAP-CE) to estimate the health, and economic benefits in three controlling scenarios of annual ave...

This research paper estimates the health burden and economic costs associated with ambient particulate matter (PM₁₀ and PM₂.₅) pollution in the Republic of Macedonia (now North Macedonia). Using air quality monitoring data, population statistics, and established exposure–response functions, the study quantifies premature mortality, morbidity, and disability-adjusted life years (DALYs) attributable...

This preprint presents a health and economic impact assessment of achieving the WHO Air Quality Guidelines (AQGs) and Interim Target 3 (IT-3) for ambient PM₂.₅ and NO₂ across 136 low- and middle-income countries (LMICs). Using high-resolution air pollution, population, and disease burden data, the study estimates the reductions in mortality, morbidity, and associated economic costs that could resu...

This U.S. Environmental Protection Agency (EPA) Policy Assessment evaluates the latest scientific evidence and policy considerations supporting the reconsideration of the National Ambient Air Quality Standards (NAAQS) for particulate matter (PM₂.₅ and PM₁₀). The assessment synthesizes findings from the Integrated Science Assessment, exposure and risk analyses, and air quality data to examine wheth...

One element of GHG emissions data quality management involves quantitative and qualitative uncertainty analysis. For example, several emissions trading proposals require that participants provide basic uncertainty information for emissions from their activities (e.g. the proposed European Emissions Allowance Trading Scheme). The GHG Protocol Initiative has developed this guidance along with a calc...

Projections are a tool to assess what might happen if countries take (or had taken) no action (‘without measures’ (WOM)), what might be achieved with actions that countries are committed to (‘with existing measures’ (WEM) or sometimes simply known as ‘with measures’ (WM)) and what else could be done (‘with additional measures’ (WAM)). These three scenarios should be assessed using the same set of ...

The Biogenic Emission Sources webpage published by the U.S. Environmental Protection Agency (EPA) provides an overview of biogenic emissions and the tools used to estimate their contribution to air pollutant emissions inventories. It describes the major natural sources of volatile organic compounds (VOCs), including vegetation, soils, and other ecosystems, and explains their role in atmospheric ch...

The Joint Global Change Research Institute (JGCRI) of the Pacific Northwest National Laboratory (PNNL) is the home and primary development institution for GCAM, a multisector model for exploring consequences of and responses to global to local changes and stressors. Regional energy, water, land, and economic systems are connected to the rest of the globe through trade and interactions with environ...