McLean reveals IPCC confessions

John McLean is a PhD candidate, climate researcher, computer scientist and IPCC reviewer and lives in Melbourne. He has long made thoughtful and informed contributions to the debate on dangerous man-made global warming (DAGW). Two weeks ago I received a copy of a letter he had sent to the Dominion Post in Wellington concerning the spat between Carter and Leyland, Hot Topic and Wratt, Reisinger and Renwick (WRR). The letter contained startling revelations from the latest IPCC Assessment Report, AR5, and John kindly agreed I could publish them, though they’re new only to me. As far as we know the letter was not published. His letter takes its facts from an article he wrote for Quadrant Online last year. – RT

Oddly, NIWA scientists conceal them

UPDATE 1: 28 Mar 1300 NZDT, see below.

John’s letter refers to the WRR article Human role in climate change is clear. The following are excerpts from the AR5 then the WRR article (emphasis added). Notice the stinging observation that WRR failed to disclose what was inconvenient for the IPCC to say, because it contradicted the alarming sounds of doom. Continue Reading →

How the IPCC writes its own ticket

Published at Quadrant Online on March 12, 2013

The end of this week (March 15) marks the cut-off for scientific papers if they are to be cited in the Working Group I contribution to the forthcoming IPCC Fifth Assessment Report, due in 2014. Unless the papers are published or accepted for publication the report cannot refer to them. The final expert review of the draft document ended on November 31, 2012, some 15 weeks ago. But according to IPCC procedures, the draft document can still be modified to accommodate new papers.


This is an adopted article.

You might reasonably wonder what’s going on, especially when the IPCC claims that its report is comprehensively reviewed by experts. To borrow the catch phrase beloved of ads for “miracle” knives and so much of the other schlock merchandise sold on late-night TV: but wait, there’s more! Continue Reading →

It’s not warming, you nitwit — it’s cooling

icicles in Germany

All right, so it might not be getting down to out-of-the-ordinary freezing temperatures, but it’s certainly not unduly warm, which is the claim we’re constantly hearing in the mainstream media, even now. Even after all the contrary evidence. Here’s more.

To show that there is scientific data backing up the refutation of strong, even dangerous, warming brought on by our over-indulgence in the famous capitalist mind-altering industrial pollutant, carbon dioxide, the NZ Climate Science Coalition just issued a press release. The 2009 paper from McLean, de Freitas and Carter shows the uncanny correlation between the Southern Oscillation Index and global temperature several months later. The press release shows how the paper “predicts” the current temperature plunge.

And I really mean plunge, because McLean et al speculate this year could be the coldest since 1956. Brrr!

Now be my guest: show how wrong it is! Show us how the correlation is not really a correlation. It’s a free world!

Oh — and you’ll also have to demonstrate, of course, that global temperatures are NOT following the SOI graph from about seven months ago (please don’t forget that part). The press release is next. Continue Reading →

More proof global temps lag SOI

SOI forecast January 2011

NIWA, listen to this, it’s amazing

UPDATE 1, 11 JAN 2011, 09:30 NZDT

On December 1 last year, we wrote about Bryan Leyland’s prediction of significant cooling before the end of the year coming true. You can see from the chart exactly what happened. Not only that, it would appear that the temperature has not finished going down yet.

This remarkable forecast, now some eight months old, comes out of a 2009 paper showing a lagged correlation between global temperatures and the Southern Oscillation Index (SOI), calculated from fluctuations in the air pressure difference between Tahiti and Darwin, and indicative also of the start (and the state) of a La Nina (as now) or an El Nino. This correlation is a lot more convincing than comparing global temperature with CO2 levels! Continue Reading →

Nature, not man, responsible for recent global warming

Now the cat is put among the pigeons.

Research recently completed by two Kiwis and an Aussie reveals that natural forces are the dominant influence on climate. They say little or none of the late 20th century global warming and cooling can be attributed to human activity.

John McLean, Chris de Freitas and Bob Carter published their paper, “Influence of the Southern Oscillation on tropospheric temperature”, in the prestigious Journal of Geophysical Research on July 23, 2009.

“The surge in global temperatures since 1977 can be attributed to a 1976 climate shift in the Pacific Ocean that made warming El Niño conditions more likely than they were over the previous 30 years and cooling La Niña conditions less likely” says co-author de Freitas, quoted at Climate Depot.

“We have shown that internal global climate-system variability accounts for at least 80% of the observed global climate variation over the past half-century. It may even be more if the period of influence of major volcanoes can be more clearly identified and the corresponding data excluded from the analysis.”

That’s all for now; more later.

UPDATE: 24 July 2009, 23:59

This is one of those (apparently) rare things in the climate debate: a peer-reviewed paper that casts doubt on the theory of strong anthropogenic global warming. Here’s hoping the alarmists note this new paper and grant it the respect it deserves without heaping the authors with ad hominem insults, though I’m not holding my breath. Please note that by ‘respect’ I mean refuting it with observation and reason, not hyperbole and obfuscation.


J. D. McLean, C. R. de Freitas, and R. M. Carter
Received 16 December 2008; revised 23 March 2009; accepted 14 May 2009; published 23 July 2009.

Time series for the Southern Oscillation Index (SOI) and global tropospheric
temperature anomalies (GTTA) are compared for the 1958–2008 period. GTTA are
represented by data from satellite microwave sensing units (MSU) for the period
1980–2008 and from radiosondes (RATPAC) for 1958–2008. After the removal from the
data set of short periods of temperature perturbation that relate to near-equator volcanic
eruption, we use derivatives to document the presence of a 5- to 7-month delayed close
relationship between SOI and GTTA. Change in SOI accounts for 72% of the variance
in GTTA for the 29-year-long MSU record and 68% of the variance in GTTA for the
longer 50-year RATPAC record. Because El Niño Southern Oscillation is known to
exercise a particularly strong influence in the tropics, we also compared the SOI with
tropical temperature anomalies between 20S and 20N. The results showed that SOI
accounted for 81% of the variance in tropospheric temperature anomalies in the tropics.
Overall the results suggest that the Southern Oscillation exercises a consistently dominant
influence on mean global temperature, with a maximum effect in the tropics, except
for periods when equatorial volcanism causes ad hoc cooling. That mean global
tropospheric temperature has for the last 50 years fallen and risen in close accord with
the SOI of 5–7 months earlier shows the potential of natural forcing mechanisms to
account for most of the temperature variation.

Citation: McLean, J. D., C. R. de Freitas, and R. M. Carter (2009), Influence of the Southern Oscillation on tropospheric temperature, J. Geophys. Res., 114, D14104, doi:10.1029/2008JD011637.