Wow! The scandal just gets juicier and juicier. Now it seems that the Kiwis may have been at it too – tinkering with raw data to make “Global Warming” look scarier than it really is. (Hat tip: Watts Up With That; Ian Wishart)
The alleged villains this time are the climate scientists at the National Institute of Water and Atmospheric Research (NiWA) – New Zealand’s answer to Britain’s Climate Research Unit. And to judge by this news alert by the Climate Science Coalition of NZ, both institutions share a similarly laissez-faire attitude to scientific accuracy.
Compare and contrast these two graphs and you’ll see .
This is the graph from NiWA’s website, showing mean annual temperature over New Zealand from 1853. Note the dotted straight line showing the upward trend. Worrying, isn’t it? Almost enough to make you fall in love your flickery, yellowy new eco-light bulbs, recycle your kids and commit yourself to a binding agreement at Copenhagen.
Now have a look at this analysis of the raw data taken from exactly the same temperature stations.
Can you see the difference? I can – and I know as little about science as Al Gore. But lets allow the experts at Climate Science Coalition of NZ to explain:
Straight away you can see there’s no slope—either up or down. The temperatures are remarkably constant way back to the 1850s. Of course, the temperature still varies from year to year, but the trend stays level—statistically insignificant at 0.06°C per century since 1850.
Putting these two graphs side by side, you can see huge differences. What is going on?
Why does NIWA’s graph show strong warming, but graphing their own raw data looks completely different? Their graph shows warming, but the actual temperature readings show none whatsoever!
Have the readings in the official NIWA graph been adjusted?
It is relatively easy to find out. We compared raw data for each station (from NIWA’s web site) with the adjusted official data, which we obtained from one of Dr Salinger’s colleagues.
Requests for this information from Dr Salinger himself over the years, by different scientists, have long gone unanswered, but now we might discover the truth.
Proof of man-made warming
What did we find? First, the station histories are unremarkable. There are no reasons for any large corrections. But we were astonished to find that strong adjustments have indeed been made.
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. There is nothing in the station histories to warrant these adjustments and to date Dr Salinger and NIWA have not revealed why they did this.
One station, Hokitika, had its early temperatures reduced by a huge 1.3°C, creating strong warming from a mild cooling, yet there’s no apparent reason for it.
We have discovered that the warming in New Zealand over the past 156 years was indeed man-made, but it had nothing to do with emissions of CO2—it was created by man-made adjustments of the temperature. It’s a disgrace.
NIWA claim their official graph reveals a rising trend of 0.92ºC per century, which means (they claim) we warmed more than the rest of the globe, for according to the IPCC, global warming over the 20th century was only about 0.6°C.
NIWA has since issued a press release, denying it has manipulated any data. And claiming:
Warming over New Zealand through the past is unequivocal.
However, at his excellent site the Briefing Room Ian Wishart – author of Air Con: The Seriously Inconvenient Truth About Global Warming – points out the striking similarities with the CRU scandal.
Manipulation of raw data is at the heart of recent claims of corrupt scientific practice in climate science, with CRU’s Phil Jones recently claiming old temperature records collected by his organization were “destroyed” or “lost”, meaning researchers can now only access manipulated data.