Tag: NZ C"S"C

You’re (not) the BEST thing

Set aside for one moment the fact that New Zealand has just (in every sense of that word) won the Rugby World Cup for the first time in a quarter of a century, and consider instead events in the world of temperature records. (Don’t worry, it won’t take long). A team led by Berkeley physicist Richard Muller — the Berkeley Earth Surface Temperature project (BEST) — has successfully reinvented the wheel, by demonstrating (once again) that the planet has been warming over the last 150 years. Tim Lambert at Deltoid explains the algorithm Muller employed:

  1. State that “reported global warming may be biased by poor station quality“.
  2. Collect funding from Charles G. Koch Charitable Foundation.
  3. Make the utterly predictable finding that warming is not a product of poor measurement.
  4. Brief reporters.

Michael Tobis at Planet 3.0 puts the affair in its proper context:

The science has not changed a whit – no serious scientist cares very much that the record has been confirmed yet again. Under ordinary circumstances this paper would have trouble getting published. This is not a red-letter day in scientific history. No new information is on the table. It’s posturing.

As for posturing, Brian Angliss at Scholars & Rogues points out that a certain US weather station quality control effort is under a little stress. One wonders if this might not spread to those who would wish to cast doubt on the NZ record?

[The Style Council]

Don Brash: climate clueless™ to the core

The new leader of New Zealand’s far-right ACT Party — the former National Party leader, Don Brash — has confirmed that he’s a fully paid up member of the climate clueless™, a worthy successor to Rodney Hide, and perfectly on side with major ACT Party backer, millionaire Alan Gibbs (who just happens to be on the policy advisory panel of the International Climate Science Coalition). But Brash hasn’t troubled himself with working on a new script for his climate denial, he’s retreading some of the oldest canards in the denial play book. In a speech this afternoon to the annual conference of Federated Farmers, Brash trotted out this remarkable sequence of untruths, half truths and straightforward lies, annotated below for your reading pleasure…

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Predicting the bleeding obvious (and getting it wrong)

A couple of days ago one of the leading figures in the New Zealand climate crank pantheon, the Climate “Science” Coalition’s very own Bryan Leyland, popped in to Hot Topic and left a comment drawing attention to his new favourite game — “predicting” global temperatures by projecting the southern oscillation index forward seven months. He bases this on the “work” of John McLean, last mentioned here a couple of months ago when I looked at his prediction (happily promoted by the NZ C”S”C) that 2011 will be the “coolest year globally since 1956 or even earlier”. Suffice to say, it won’t be.

Leyland first notes the infamous McLean, De Freitas and Carter paper of 2009, then his own “prediction” that this year’s La Niña would bring a cooling in global temperatures, and then says:

What is remarkable about this is that a retired engineer with access to the Internet has been able to make accurate predictions of future climate. Yet, to my knowledge, no computer-based climate model nor any mainstream “climate scientist” predicted this cooling. To me, this is truly remarkable.

What’s really remarkable is that Leyland is actually only showing his ignorance of some pretty basic climate relationships.

Continue reading “Predicting the bleeding obvious (and getting it wrong)”

McLean’s folly and the climate clueless

In an astonishing press release issued last week, the New Zealand Climate “Science” Coalition predicts that 2011 will be the “coolest year globally since 1956 or even earlier”. The C”S”C bases its prediction on the work of Australian “computer consultant and occasional travel photographer” John McLean. Hot Topic readers will remember McLean as the lead author of a rapidly rebutted 2009 paper (written with Chris de Freitas and Bob Carter) which claimed that El Niño/Southern Oscillation (ENSO) events were a driver of global temperature increases. I covered the full story at the time: see Mother Nature’s Sons and subsequent posts.

One unoriginal finding of the McLean paper was that global temperatures were affected by ENSO events — warming after El Niños and cooling after La Niñas. Last year NZ C”S”C member Bryan Leyland used this to “predict” a coming cooling, which was lapped up by the usual suspects. In January this year, Leyland predicted cooling would continue until at least June. Now McLean has taken this a step further by predicting that temperatures will plunge to that of a cool year 50 years ago. There’s no justification for this prediction in the press release, beyond McLean pretending that his 2009 paper showed that CO2 was a minor player in global temperature change.

Unfortunately for the credibility of all involved, McLean’s prediction is utter unphysical nonsense. Here’s why…

Continue reading “McLean’s folly and the climate clueless”

Fools gold: cranks can’t count

I don’t know whether to laugh or cry. 14 months on from the start of the Treadgold/Climate “Science” Coalition/ACT campaign to cast doubt on the long term New Zealand temperature record, after parliamentary questions, much mud slinging at Jim Salinger and NIWA, legal action, and the expensive and time-wasting reconstruction of a temperature series that’s pretty much identical to the original, diligent digging by Open Parachute/Sciblogs blogger Ken Perrott has revealed a stunning level of statistical incompetence in the “paper” that started it all. Written and published by Richard Treadgold of the Climate Conversation Group, that “paper” contained a graph purporting to show a long term NZ temperature series constructed without adjustments for station moves.

A day or two ago, Treadgold posted a link to the underlying data at his blog, and Perrott — who has been requesting this information for most of the last year — was quick to download it and take a peek “under the hood” of Treadgold’s graph. And what he found was truly remarkable. Treadgold makes no allowances for missing data, makes no attempt to create a valid composite series, simply averages the numbers and plots them on a graph. There are a lot of gaps in the data — especially in the early years — so the “NZ” temperature is in some years just Dunedin, or Dunedin plus Wellington, or Wellington plus Auckland, and so on. Treadgold’s incredible statistical naivete allows him to not just compare apples to oranges, but to feijoas and konini berries as well. The result, of course, is a dog’s breakfast. To make matters worse, he then computed a trend on the data, and announced:

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.

A whole political campaign has been constructed on the back of this statistical idiocy. Variations of Treadgold’s claim have been used in questions in Parliament. Valuable scientists’ time and tax payer money has been wasted pursuing his folly. The Climate “Science” Coalition are still desperately trying to keep the issue alive, hoping that if they can create enough smoke everyone will assume there’s a fire somewhere. Unfortunately for Barry Brill and his colleagues, Treadgold’s statistical incompetence undercuts their whole campaign. Do they really think the NZ public and politicians will take the word of a bunch that sling mud and smear scientists, when they are incapable of doing their own simple sums?

Congratulations to Ken for unmasking this fraud. I eagerly await the fulsome apology Treadgold owes to Jim Salinger, NIWA and the public of New Zealand. Perhaps the NZ C”S”C might offer to repay some of the tax payer funds wasted on this affair. But I won’t be holding my breath…

Meanwhile, I think it’s worth repeating the conclusion to my first post on this affair:

None of these cranks should be accorded any respect in future. By their words shall we know them, and their words show them to be ignorant, bullying fools. De Freitas [science advisor to the CSC] should withdraw and apologise, or resign from his post at Auckland University, and if Treadgold, Dunleavy, McShane, Leyland,or any other member of the NZ CSC want to partake in public debate on the subject of climate science, they should expect derision to be heaped on them and their views.

 

[Update 10/2: Prompted by Manfred’s comment below, I checked back over the original 7SS data and Treadgold’s spreadsheet — as well as with one or two people who might be expected to know ;-) — and it appears that taking a simple average of the annual anomalies in years where some stations reported no data was NIWA’s practise for the original 7 station series. It’s not ideal, particularly in the very early years when there are large gaps in the data, but it’s how it was done. Treadgold was therefore following established practise, in that one respect. I therefore apologise to Richard for echoing that specific allegation without first checking the data. However, this does not get him off the hook for the rest of his “analysis”, nor prompt me to change my overall conclusions. I accused him of “statistical idiocy” and that charge stands — not least because he derives his anomalies by taking unadjusted or raw station data and relating it to a 1971-2000 baseline derived from different stations at different locations using different measurement equipment, and then pretends that he’s made the warming disappear. Tell that to the glaciers…]

[Stone Roses]