Greenhouse Gas and Air Pollution Interactions and Synergies (GAINS)
GAINS is an online tool for assessing transnational strategies that reduce emissions of multiple air pollutants and greenhouse gases (GHG) at least costs, and minimize their negative effects on human health, ecosystems, and climate change. GAINS estimates historic emissions of ten air pollutants and six GHGs based on data from international energy and industrial statistics, emission inventories, and on data supplied by countries themselves. It assesses emissions on a medium-term time horizon, with projections being specified in five-year intervals through the year 2050. GAINS estimates for each country/region the potential emission reductions that are offered by about 2,000 specific emission control measures and their costs.