MAN-MADE WARMING IN NZ exposed by New Zealand Climate Coalition (NZCC) and Watts Up With That, 25 Nov 2009. Recently the New Zealand National Institute of Water & Atmospheric Research. (NIWA) which collects and collates climate data for New Zealand published a report entitled Past Climate Variations over New Zealand. This included a graph of mean temperatures for New Zealand for the period 1853 to 2008 showing how much they varied from overall average of temperatures from a thirty year period 1971 - 2000. The graph show that prior to the 1970s temperatures were consistently lower than the overall average, but were higher than average after this.
NIWA calculated that there was a warming trend over the past century (1909-2008) of 0.92 degrees C. Researchers from the New NZCC checked this out by downloading original temperature records from NIWA and plotting their own graph. Their graph showed a small statistically insignificant rise, consistent with the overall warming that occurred as the world emerged from the Little Ice Age that ended in the 1800s. Why the difference? It seems the data has been “adjusted” for official publications. NZCC obtained the adjusted data for various weather stations around NZ and compared them the original recordings. They found: “About half the adjustments actually created a warming trend where none existed; the other half greatly exaggerated existing warming. All the adjustments increased or even created a warming trend, with only one (Dunedin) going the other way and slightly reducing the original trend.
The shocking truth is that the oldest readings have been cranked way down and later readings artificially lifted to give a false impression of warming, as documented below.” They describe their findings as “Proof of man made warming”, i.e. the warming occurred in man-made adjustments, not in the original temperature recordings. They then go on to say: “The unexplained changes to the official New Zealand temperature record cast strong doubt on the government’s assertions of urgency regarding so-called ‘climate change’. Using NIWA’s public data, we have shown that global warming has not yet reached New Zealand (and what does that say for global warming?).”
Meanwhile Richard Keene has carried out a similar study of Alaskan temperatures and found a much smaller warming trend than the IPCC claims, but good correlation with the Pacific Decadal Oscillation – variations in temperature patterns in the Pacific Ocean.
Watts Up With That: http://wattsupwiththat.com/2009/11/25/uh-oh-raw-data-in-new-zealand-tells-a-different-story-than-the-official-one/
Richard Keene: http://icecap.us/images/uploads/Alaska_Climate.pdf
ED. COM. Maybe global warming has reached your area yet either, or if it has it is not as severe as the man-man global warming alarmists would like. Why not see if you can get temperature records for your state or region and draw your own graphs? We would be interested to see any well documented results. (Ref. data analysis, manipulation)