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Old November 18th 14, 02:09 PM posted to uk.sci.weather
Graham P Davis Graham P Davis is offline
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First recorded activity by Weather-Banter: Oct 2004
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Default [CC] Equal warmest October

On Fri, 14 Nov 2014 08:49:00 +0000
Graham P Davis wrote:

In the GISS records, this October tied with 2005 for first place with
an anomaly of +0.76C. The 12-month period of Nov-Oct, also tied for
first place but with 2009-2010 at +0.67C.

Graph of the 12-monthly anomalies and 11-year rolling mean is he
https://www.flickr.com/photos/scarlet-jade/5940173109/


Figures for the Pacific Decadal Oscillation (PDO) have just come in for
October and the Index is at +1.49 which is the highest monthly value
since May 2005 (+1.86) and the highest October value since 1997
(+1.61).

The average PDO value for the first 10 months of this year is +0.93;
the previous highest annual value is for 2003 (+0.97). Whilst it's
conceivable that this might be equalled or just exceeded, it will still
be barely half the value achieved in 1941 when it reached +1.99. The
figure for 1997, which helped kick off the following year's then record
global air temperatures was +1.46.


--
Graham P Davis, Bracknell, Berks.
[Retired meteorologist and computer programmer]
Posted with Claws: http://www.claws-mail.org/