Sophie Szopa coauthored the IPCC assessment chapter on short-lived climate forcers. Its treatment of methane separates an atmospheric burden's chemical removal time from the relaxation time of a methane perturbation.
Additional methane can change the abundance of the hydroxyl radical that removes it. This chemical feedback makes the perturbation lifetime a coupled-system property rather than a simple fixed loss constant.[ref]
Short-lived Climate Forcers by Sophie Szopa and others. Research topic and author attribution in the primary publication
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