Uncertain Times at the Royal Society?
"The Royal Society now also agrees with the GWPF that the warming trend of the 1980s and 90s has come to a halt in the last 10 years."
- 0.8 ± 0.2 °C warming since 1850.
- Rise in CO2 caused by humans.
- IPCC heating or ‘radiative forcing’ values.
- Doubling CO2 causes 1 °C of direct warming, feedbacks are expected to add more.
- Solar heating less than 10% of CO2’s, but research is checking to see if it’s magnified somehow.
- Doubling CO will cause 2-4.5 °C global warming (the IPCC says “likely to be in the range 2 to 4.5 °C with a best estimate of about 3 °C“), and IPCC global warming projections are repeated.
- Sea levels will rise at least at the rate they have been.
- Models struggle with clouds, regional changes, and long term carbon cycle feedback.
- Models don’t catch ice sheet breakup, so sea level rise they give is a minimum.
"The UK now formally joins the ranks of denier nations,"
"There is strong evidence that changes in greenhouse gas concentrations due to human activity are the dominant cause of the global warming that has taken place over the last half century."
"This warming has... been largely concentrated... from around 1975 to around 2000,"
"The decade 2000-2009 was, globally, around 0.15 °C warmer than the decade 1990-1999."