by Stacy Morford -
Aug 28th, 2009
When the G20 ministers gather in Pittsburgh next month, one of their missions is to come up with a plan to pay for climate change adaptation in developing countries. They'll now be doing that without a clear picture of how much it will cost.
The UN climate change secretariat’s 2007 estimates for the global cost of adaptation measures have been widely used as benchmarks in discussions, but a new study finds those numbers are way off.
The UNFCCC estimated global adaptation costs at between $40 billion and $170 billion a year through 2030, but it didn’t take the full range of impacts into account, say researchers from the International Institute for Environment and Development and Grantham Institute for Climate Change at Imperial College London.
"Just looking in depth at the sectors the UNFCCC did study, we estimate adaptation costs to be two-three times higher, and when you include the sectors the UNFCCC left out, the true cost is probably much greater," said author Martin Parry, a researcher at Grantham Institute and former co-chair of the IPCC working group on adaptation.
For example, the UNFCCC’s disease assessment of $5 billion only took into account malaria, diarrhea diseases and malnutrition in low- to middle-income countries, but that’s likely to be less than half the actual impact when other diseases and high-income countries are considered, the new study says.
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