Oversensitive: How The IPCC Hid The Good News On Global
Warming - A new report published today by the Global Warming Policy Foundation
shows that the best observational evidence indicates our climate is
considerably less sensitive to greenhouse gases than climate models are
estimating.
The clues for this
and the relevant scientific papers are all referred to in the recently
published Fifth Assessment report (AR5) of the Intergovernmental Panel on
Climate Change (IPCC). However, this important conclusion was not drawn in the
full IPCC report – it is only mentioned as a possibility – and is ignored in
the IPCC’s Summary for Policymakers (SPM).
For over thirty
years climate scientists have presented a range for climate sensitivity (ECS)
that has hardly changed. It was 1.5-4.5°C in 1979 and this range is still the
same today in AR5. The new report suggests that the inclusion of recent
evidence, reflected in AR5, justifies a lower observationally-based temperature
range of 1.25–3.0°C, with a best estimate of 1.75°C, for a doubling of CO2. By
contrast, the climate models used for projections in AR5 indicate a range of
2-4.5°C, with an average of 3.2°C…..To Read More….
No comments:
Post a Comment