“Almost all of the 34 adjustments made by Dr Jim Salinger to the 7SS have been abandoned, along with his version of the comparative station methodology.
“NIWA is clearly not prepared to defend the adjustments exposed in Are we feeling warmer yet? But it took a court case to force them into a corner.
“NIWA makes the huge admission that New Zealand has experienced hardly any warming during the last half-century. For all their talk about warming, for all their rushed invention of the “Eleven-Station Series” to prove warming, this new series shows that no warming has occurred here since about 1960. Almost all the warming took place from 1940-60, when the IPCC says that the effect of CO2 concentrations was trivial. Indeed, global temperatures were falling during that period.
“The new temperature record shows no evidence of a connection with global warming. Since that’s the reason this tempest in a teacup has brewed in the first place, it should simmer down now.”
Mr Treadgold said the people of New Zealand, for the first time, now have an official (although provisional) temperature record of the last 100 years. It is provisional because NIWA still has two steps to take to complete the project:
It is working on calculations of the confidence intervals, or margins of error, which will be published later.
It is yet to publish its methodology, which is to be independently peer-reviewed for a scientific journal.
Coalition scientists look forward to examining this new series closely over the coming months to determine its accuracy. The two steps outstanding from NIWA will be of great benefit in this regard.
Mr Treadgold said: “It’s reassuring to know that, for the first time ever, NIWA understands their own graph. This must be a tremendous relief for NIWA staff and management. It is certainly a relief for the NZ public.