Air pollution and climate-forcing impacts of a global hydrogen economy

摘要: If today's surface traffic fleet were powered entirely by hydrogen fuel cell technology, anthropogenic emissions of the ozone precursors nitrogen oxide (NOx) and carbon monoxide could be reduced up to 50%, leading significant improvements in air quality throughout Northern Hemisphere. Model simulations such a scenario predict decrease global OH an increased lifetime methane, caused primarily reduction NOx emissions. The sign change climate forcing dioxide methane depends on technology used generate molecular hydrogen. A possible rise atmospheric concentrations is unlikely cause perturbations system.