Demonstrating GWP*: a means of reporting warming-equivalent emissions that captures the contrasting impacts of short- and long-lived climate pollutants

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	*Demonstrating GWP: a means of reporting warming-equivalent emissions that captures the contrasting impacts of short- and long-lived climate pollutants**
	Environmental Research Letters
	2020-04-02
出版年	2020
国家	英国
领域	地球科学 ; 资源环境
英文摘要	John Lynch, Michelle Cain, Raymond Pierrehumbert and Myles Allen Published 2 April 2020, https://doi.org/10.1088/1748-9326/ab6d7e The atmospheric lifetime and radiative impacts of different climate pollutants can both differ markedly, so metrics that equate emissions using a single scaling factor, such as the 100-year Global Warming Potential (GWP₁₀₀), can be misleading. An alternative approach is to report emissions as 'warming-equivalents' that result in similar warming impacts without requiring a like-for-like weighting per emission. GWP, an alternative application of GWPs where the CO₂-equivalence of short-lived climate pollutant emissions is predominantly determined by changes in their emission rate, provides a straightforward means of generating warming-equivalent emissions. In this letter the authors illustrate the contrasting climate impacts resulting from emissions of methane, a short-lived greenhouse gas, and CO₂, and compare GWP₁₀₀ and GWP CO₂-equivalents for a number of simple emissions scenarios. They demonstrate that GWP* provides a useful indication of warming, while conventional application of GWP₁₀₀ falls short in many scenarios and particularly when methane emissions are stable or declining, with important implications for how we consider 'zero emission' or 'climate neutral' targets for sectors emitting different compositions of gases.
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来源平台	Oxford Martin School, University of Oxford
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/270751
专题	地球科学资源环境科学
推荐引用方式 GB/T 7714	Environmental Research Letters. Demonstrating GWP*: a means of reporting warming-equivalent emissions that captures the contrasting impacts of short- and long-lived climate pollutants,2020.