Paul Homewood: Global Temperature Updates – 2012

Posted: January 23, 2013 by tallbloke in climate, data, Dataset, Measurement, Natural Variation, weather

Important new update on global temperature metrics from Paul Homewood.


By Paul Homewood


While Obama is imploring us to stop the global warming that is bringing us “the devastating impact of raging fires, and crippling drought, and more powerful storms”, it would seem to be a good idea to see exactly what global temperatures have been doing in the last year.

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  1. ‘Quick analysis of HADCRUT data shows a larger drop of 0.41C in Northern Hemisphere temperatures, though Southern Hemisphere is also down by 0.09C.’

    Expect that to follow through to January as well.

  2. Roger Andrews says:

    The Earth hasn’t warmed since the last ENSO-generated ocean heat release ended in 2002 and it won’t begin to warm again until the next one. When’s that going to happen? Well, it should be happening right about now but it isn’t, suggesting that the ocean has run out surplus heat. And if there’s no more surplus heat left in the oceans the current period of no warming could continue indefinitely.

  3. Nick Stokes says:

    You can see the reason for the low December anomaly here. Very cold in Russia and NW America. Mostly normal elsewhere.

    No particular reason to expect this in January. The heat wave in Australia will have an effect on that average.

  4. ‘No particular reason to expect this in January.’

    You’re expecting the Nortern Hemisphere to rebound in January?

  5. Nick Stokes says:

    Well, to revert toward the mean, yes.

  6. Chris M says:

    Nick Stokes, “heat wave in Australia” is drawing too long a bow I think. As I understand it there was a blocking weather pattern which allowed excess heat accumulation in the central deserts, which then fed hot north-westerlies across south-eastern Australia, resulting in a few 40C+ days on the coast. We have also had cool damp days in the past week. Now we’re in a monsoonal pattern with very high humidity – unpleasant but not unusually warm for mid-summer.

    Australia is a very small proportion of the SH’s total surface area – let’s not overstate our own importance!