Atmospheric Impacts of Hydrogen as an Energy Carrier

Hydrogen gas emissions to the atmosphere can very likely cause global warming through indirect effects. It can also possibly cause depletion of the ozone layer, and impact air pollution. These adverse effects are likely smaller than those of the fossil fuel usage hydrogen fuel would replace, however, it underlines the importance of keeping hydrogen leakage as low as possible. Current research on all these effects are uncertain, and the quality of estimates would benefit greatly from further researc