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+NAO stats


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This April will make 29 of the last 30 months Dec-Apr of +NAO. The lowest monthly November NAO value in that time is -0.16. There was a time in the early 1990s of 26/28 months, and 29/33 months. 

The April will make the 9th consecutive +NAO April. 

8 December's in a row. 6 January's in a row. The 1 month /30 of -NAO was after a 10mb Stratosphere warming. March 2013 was the last -NAO. Before then, 11/13 Nov-Apr months were +NAO, going back to 2011.

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3 hours ago, AfewUniversesBelowNormal said:

This April will make 29 of the last 30 months Dec-Apr of +NAO. The lowest monthly November NAO value in that time is -0.16. There was a time in the early 1990s of 26/28 months, and 29/33 months. 

The April will make the 9th consecutive +NAO April. 

8 December's in a row. 6 January's in a row. The 1 month /30 of -NAO was after a 10mb Stratosphere warming. March 2013 was the last -NAO. Before then, 11/13 Nov-Apr months were +NAO, going back to 2011.

I'd enjoy the stats this thread might produce, but I can't make heads or tails out of the bolded. Were they + or -? And is this unprecedented or cyclical or something else?

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