Sunday, January 3, 2016

NCEP/NCAR December, up by 0.108°C - highest anomaly in record (again).

The Moyhu NCEP/NCAR index for December was 0.621°C, up from November's 0.513°C, and ahead of the previous record - October 2015 at 0.567°C, which itself was a big jump on the previous record. It was an eventful month, with another extraordinary peak early, then mid-month the steepest plunge in recent years (but only to values which would have been high a few months ago) and then back to hot at the end.

There were some late data troubles - a data pause from NCEP for three days, and at my end, I have some end of year issues to fix. But they don't affect the results posted.

Adjusted to the 1951-1980 baseline of GISS, that would give a month anomaly of 1.18°C. The current record there is October at 1.06°C. I would expect that GISS might be a bit lower than 1.18, but still the hottest month in the record. Which makes 2015 even more securely the hottest year.



5 comments:

  1. Don't look now, but January 2016 is not exactly not swelterin' itself.

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  2. If I've done the numbers right, December was a whopping 0.35C warmer than the previous NCEP December record set in 2006.

    Chubbs

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    Replies
    1. That's the same number I get.

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  3. JMA has announced a preliminary value for the whole year 2015, 0.40 C, up 0.13 from the previous record year 2014

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  4. the JMA value does not include December so the final result might be higher

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