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Comment 16 for Short-Lived Climate Pollutant Draft Strategy (slcpdraftstrategy-ws) - 1st Workshop.
First Name: Steve
Last Name: Colome
Email Address: scolome@pacbell.net
Affiliation:
Subject: Near-term importance of focusing on methane source-reduction
Comment:
It makes little sense to calculate the GWP of methane on a 100-year cycle since this gas (in contrast to CO2) does not remain in the atmosphere for 100 years. Even a 20-year GWP of 80-120 does not make much sense given that we may need a strong short-term lever to control the progression of global warming. With an approximate atmospheric half-life of 7 years and generally stated lifespan of 12 years, California should take account of the very non-linear GWP of methane. For example, see Figure 7 from the following source: http://www.eci.ox.ac.uk/research/energy/downloads/methaneuk/chapter02.pdf Let's comport the State's policies with the science.
Attachment: www.arb.ca.gov/lists/com-attach/21-slcpdraftstrategy-ws-VzRWOFAwU3BXJVM2.pdf
Original File Name: chapter02 Science of Methane.pdf
Date and Time Comment Was Submitted: 2015-10-28 10:10:58
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