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Is GWP20 relevant?

At the 31st Open Ended Working Group of the Montreal Protocol meeting in Montreal in August 2011, a paper proposing to calculate GWP figures on a 20 rather than on a 100-year basis was released.
Authored by Janos Maté, veteran Greenpeace campaigner and David Kanter (PhD candidate at Princeton University), it draws from research by German consultants Öko-Recherche GmbH and HEAT GmbH and attempts to make the case that “policies based on GWP20 values of HFCs highlight the benefits of climate a...

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