Articles | Volume 23, issue 10
https://doi.org/10.5194/acp-23-6011-2023
https://doi.org/10.5194/acp-23-6011-2023
Peer-reviewed comment
 | 
01 Jun 2023
Peer-reviewed comment |  | 01 Jun 2023

Comment on “Climate consequences of hydrogen emissions” by Ocko and Hamburg (2022)

Lei Duan and Ken Caldeira

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Latest update: 19 Apr 2024
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Short summary
Ocko and Hamburg (2022) emphasize the short-term climate impact of hydrogen, and we present an analysis that places greater focus on long-term outcomes. We have derived equations that describe the time-evolving impact of hydrogen and show that higher methane leakage is primarily responsible for the warming potential of blue hydrogen, while hydrogen leakage plays a less critical role. Fossil fuels show more prominent longer-term climate impacts than clean hydrogen under all emission scenarios.
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