'Inaccurate' methane measure drives NZ climate policy

'Inaccurate' methane measure drives NZ climate policy
NZ's methane emissions need to come down, but measuring them correctly also matters. (Image: Getty)
Adrian Macey and Dave Frame
New Zealand has promised cuts to greenhouse gas emissions using a measure that substantially overstates the global-warming effect of constant levels of methane emissions, say climate change experts Dave Frame and Adrian Macey.In the third part of a series being published by BusinessDesk, setting out how NZ reached its climate change policies, Frame and Macey argue that the so-called GWP100 measure used to calculate methane emissions “greatly overstates the warming caused by NZ’s methane in relation to the Paris Agreement’s lon...

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