A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Present global warming: a justifiable and stable metric for evaluating short-lived climate pollutants
The impacts of short-lived climate pollutants (SLCPs) such as methane are typically described using metrics that compare their climate impacts to carbon dioxide’s climate impact. The metrics consider a climate pollutant’s atmospheric heat-trapping effectiveness and atmospheric lifetime. Here we introduce an alternative metric called the Present Global Warming (PGW), which uses economic exponential discount modelling to characterize short-term and long-term effects simultaneously, resulting in a justifiable, familiar, and stable metric for evaluating SLCPs. We recommend quantifying the climate impacts of methane emissions using 2.5% annual discounting—consistent with the discount rates recently proposed in academic work and traditionally used in climate policy—corresponding to methane PGW _2.5% = 50. In this context, one ton of emitted methane has the same climate impact as 50 tons of emitted carbon dioxide.
Present global warming: a justifiable and stable metric for evaluating short-lived climate pollutants
The impacts of short-lived climate pollutants (SLCPs) such as methane are typically described using metrics that compare their climate impacts to carbon dioxide’s climate impact. The metrics consider a climate pollutant’s atmospheric heat-trapping effectiveness and atmospheric lifetime. Here we introduce an alternative metric called the Present Global Warming (PGW), which uses economic exponential discount modelling to characterize short-term and long-term effects simultaneously, resulting in a justifiable, familiar, and stable metric for evaluating SLCPs. We recommend quantifying the climate impacts of methane emissions using 2.5% annual discounting—consistent with the discount rates recently proposed in academic work and traditionally used in climate policy—corresponding to methane PGW _2.5% = 50. In this context, one ton of emitted methane has the same climate impact as 50 tons of emitted carbon dioxide.
Present global warming: a justifiable and stable metric for evaluating short-lived climate pollutants
Andrew E Pomerantz (author) / Robert L Kleinberg (author)
2022
Article (Journal)
Electronic Resource
Unknown
Metadata by DOAJ is licensed under CC BY-SA 1.0
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