Assessing the Global Warming Potential of Hydrogen

A new study by CICERO estimates that the global warming potential of leaked hydrogen is almost 12 times stronger than CO2. Hydrogen is not a greenhouse gas, but its chemical reactions in the atmosphere affect greenhouse gases like methane, ozone, and stratospheric water vapor. The study used five different atmospheric chemistry models and is the most comprehensive assessment of the climate effect of hydrogen to date. The study highlights the importance of reducing hydrogen leaks and developing technology to monitor and detect leaks at scale.