A multi-model assessment of the Global Warming Potential of hydrogen
A multi-model assessment of the Global Warming Potential of hydrogen
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DOI：
10.1038/s43247-023-00857-8
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发表时间：
2023-06
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通讯作者：
M. Sand;R. Skeie;M. Sandstad;S. Krishnan;G. Myhre;Hannah Bryant;R. Derwent;D. Hauglustaine;F. Paulot;M. Prather;D. Stevenson
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作者：
M. Sand;R. Skeie;M. Sandstad;S. Krishnan;G. Myhre;Hannah Bryant;R. Derwent;D. Hauglustaine;F. Paulot;M. Prather;D. Stevenson
随着全球对分子氢替代化石燃料的兴趣日益增加，人们越来越关注氢向大气中的潜在泄漏及其环境后果。氢不是直接的温室气体，但它的化学反应会改变温室气体甲烷、臭氧、平流层水蒸气和气溶胶的丰度。在这里，我们使用五个全球大气化学模型的模型集合来估计氢的100年时间范围的全球变暖潜势（GWP 100）。我们估计氢的GWP 100为11.6 ± 2.8（一个标准差）。不确定性范围包括土壤吸收，光化学生产的氢，氢和甲烷的寿命，以及羟基自由基反馈甲烷和氢。氢诱导的变化在不同的模型中是稳健的。重要的是将氢泄漏保持在最低限度，以实现转向氢经济的好处。
With increasing global interest in molecular hydrogen to replace fossil fuels, more attention is being paid to potential leakages of hydrogen into the atmosphere and its environmental consequences. Hydrogen is not directly a greenhouse gas, but its chemical reactions change the abundances of the greenhouse gases methane, ozone, and stratospheric water vapor, as well as aerosols. Here, we use a model ensemble of five global atmospheric chemistry models to estimate the 100-year time-horizon Global Warming Potential (GWP100) of hydrogen. We estimate a hydrogen GWP100 of 11.6 ± 2.8 (one standard deviation). The uncertainty range covers soil uptake, photochemical production of hydrogen, the lifetimes of hydrogen and methane, and the hydroxyl radical feedback on methane and hydrogen. The hydrogen-induced changes are robust across the different models. It will be important to keep hydrogen leakages at a minimum to accomplish the benefits of switching to a hydrogen economy.