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  • Written by The Conversation Contributor

Politics is full of irony and it seems our climate is happy to lend a helping hand.

Witness the Great Barrier Reef’s encore to Greg Hunt’s recent award as the world’s best environment minister. Not that Greg could do anything about the coral bleaching, it being a response to a global problem.

Down south, the climate is doing its darnedest to annoy the Tasmanian energy minister. Failure to support wind power developments, drought and now the ongoing saga of the Basslink outage have combined to push wholesale electricity prices to some 800% above the mainland. Now Taswegians have had to resort to diesel gensets to keep the lights on.

On the climate front, the latest global warming figures are extraordinary.

El Nino conditions are adding to the relentless warming trend that has persisted for more than half a century. Since October last year, and for the first time, monthly global temperatures have exceeded the 1951-1980 average by more than 1 degree Celsius, according to NASA’s latest figures. February 2016 was unbelievably hot at around 1.35 degrees above the average of just 50 years ago.

image NASA GISTEMP global monthly temperature anomaly measured as the deviation from 1951-1980 averages in degrees Celsius. Triangles and circles mark exceptional months as described in figure below. data from NASA, image by Mike Sandiford

Isn’t it a touch ironic that October last year was the first full month of Malcolm the second’s (aka Turnbull) ascension. Similarly, given the role his predecessor played in the ongoing climate wars saga, it’s noteworthy that Tony Abbott’s demise was accompanied by a 0.2 degree jump in the global temperature anomaly.

Such coincidences make me wonder, how have global temperature anomalies tracked our Australian election cycles in the past? To assess this important question, it is useful to remove the underlying upward trend in the temperature anomaly data as shown in the figure below.

image Detrended GISTEMP monthly anomalies. Months with exceptional above trend averages are highlighted by triangles (more than 0.25 degrees above trend), and by circles (more than 0.5 degrees above trend, as for February, 2016)

I start the analysis with the election of Gough Whitlam in 1972, since when Labor and the LNP coalition have held power for almost identical lengths of time (at 260 and 259 months, respectively).

As shown in the figure below, it seems there is generally more heat in the system when LNP holds the reigns of power, though the difference is slight. LNP averages 0.025 degrees above trend, while Labor averages 0.026 below trend. However LNP is definitely stands out in the exceptions, having exceeded the 0.25 above trend 14 times compared to Labor’s 5 times.

image detrend

In terms of individual Prime Ministers, it really is a no contest. Malcolm the second is a country mile ahead of the others, currently averaging 0.36 degrees above trend.

image Average detrended temperature anomalies for Australian Prime Minister since Gough Whitlam.

In these terms, Keating and Gillard stand out as our coolest Prime Ministers, with averages at 0.08 and 0.09 degrees below trend.

Perhaps there is more in this than one might guess. One has to wonder about the political narrative inspired by the figure below the showing global temperature trends for each of the past 10 Prime Ministers.

image GISTEMP anomaly trends by individual Australian Prime Minister since Gough Whitlam.

Gough Whitlam started with a couple of exceptional months, but faded rapidly. Malcolm number one (aka Fraser) did the reverse, only managing to stoke the fires to well above trend in the 80’s. He went out in a blaze of glory with five exceptional months in his last few years.

Somewhat surprisingly, Hawke was unable to achieve much by the way of hot air. Keating was dogged in the early years by the Pinatubo eruption, which kept the heat off for the much of his reign.

Of all the recent Prime Ministers, Howard was the most consistent at keeping the heat on, regularly scoring exceptional months across his reign.

Suprisingly, none of the three that presided during height of the climate wars from 2007-2014 ever got really burnt. Rudd the first started out in negative territory but seemed to be building towards a head of steam before he was figuratively toasted. Gillard was well short on the hot air front and, try as he might, Abbot just couldn’t bring on much by the way of heat.

Malcolm the second (aka Turnbull), stands alone of having a 100% strike rate of exceptional heat. So far his reign has seen global temperatures out of control. And its not only that heat that is exceptional, but his trajectory has been nothing short of incendiary.

There’s no doubt about it. Malcolm the second has been our hottest prime minister by a country mile. The question is, can we take the heat?

Authors: The Conversation Contributor

Read more http://theconversation.com/whos-been-our-hottest-pm-57062

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