An insider’s story of the global attack on climate science
23 January 2014, 6.40am AEST
Jim SalingerA recent headline –
Failed doubters trust leaves taxpayers six-figure loss – marked the end of a four-year epic saga of secretly-funded climate denial, harassment of scientists and tying-up of valuable government resources in New Zealand.
It’s likely to be a familiar story to my scientist colleagues in Australia, the UK, USA and elsewhere around the world.
But if you’re not a scientist, and are genuinely trying to work out who to believe when it comes to climate change, then it’s a story you need to hear too. Because while the New Zealand fight over climate data appears finally to be over, it’s part of a much larger, ongoing war against evidence-based science.
From number crunching to controversyIn 1981 as part of my PhD work, I produced a
seven-station New Zealand temperature series, known as 7SS, to monitor historic temperature trends and variations from Auckland to as far south as Dunedin in southern New Zealand.
A decade later, in 1991-92 while at the NZ Meteorological Service, I revised the 7SS using a new
homogenisation approach to make New Zealand’s temperature records more accurate, such as adjusting for when temperature gauges were moved to new sites.
For example, in 1928
Wellington’s temperature gauge was relocated from an inner suburb near sea level up into the hills at Kelburn, where - due to its higher, cooler location - it recorded much cooler temperatures for the city than before.
With statistical analysis, we could work out how much Wellington’s temperature has really gone up or down since the city’s temperature records began back in 1862, and how much of that change was simply due to the gauge being moved uphill. (You can read more about re-examining NZ temperatures
here.)
So far, so uncontroversial.
But then in 2008, while working for a NZ government-owned research organisation, the
National Institute of Water and Atmospheric Research (NIWA), we updated the 7SS. And we found that at those seven stations across the country, from Auckland down to Dunedin, between 1909 and 2008 there was a warming trend of 0.91°C.
Soon after that, things started to get heated.
The
New Zealand Climate Science Coalition, linked to a global climate change denial group, the
International Climate Science Coalition, began to question the adjustments I had made to the 7SS.
And rather than ever contacting me to ask for an explanation of the science, as I’ve tried to briefly cover above, the Coalition appeared determined to find a conspiracy.
“Shonky” claimsThe attack on the science was led by then MP for the free market
ACT New Zealand party, Rodney Hide, who
claimed in the NZ Parliament in February 2010 that:
Quote:NIWA’s raw data for their official temperature graph shows no warming. But NIWA shifted the bulk of the temperature record pre-1950 downwards and the bulk of the data post-1950 upwards to produce a sharply rising trend… NIWA’s entire argument for warming was a result of adjustments to data which can’t be justified or checked. It’s shonky.
Mr Hide’s attack continued for 18 months, with more than 80 parliamentary questions being put to NIWA between February 2010 and July 2011, all of which required NIWA input for the answers.
The science minister asked NIWA to re-examine the temperature records, which required several months of science time. In December 2010, the results were in. After the methodology was reviewed and endorsed by the Australian Bureau of Meteorology, it was found that at the seven stations from Auckland to Dunedin, between 1909 and 2008 there was a warming trend of 0.91°C.
That is, the same result as before.
But in the meantime, before NIWA even had had time to produce that report, a new line of attack had been launched.
Off to courtIn July 2010, a statement of claim against NIWA was filed in the High Court of New Zealand, under the guise of a new charitable trust: the New Zealand Climate Science Education Trust (NZCSET). Its trustees were all members of the NZ Climate Science Coalition.
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