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View Diary: Sea Ice Death Spiral Driving Atlantic Water into Arctic Causing Wild Weather (197 comments)

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  •  There is a mistake in the twin blue globe NAO (0+ / 0-)

    The text in the blue globe diagram on the left swaps he words "high" and "low."  The text in the diagram on the right is correct.

    This diagram explains the difference between positive and negative NAO.

    •  + NAO is warm in US, cold in eastern Canada (0+ / 0-)

      From the Climate Prediction Center.

      Strong positive phases of the NAO tend to be associated with above-averagel temperatures in the eastern United States and across northern Europe and below-average temperatures in Greenland and oftentimes across southern Europe and the Middle East. They are also associated with above-average precipitation over northern Europe and Scandinavia in winter, and below-average precipitation over southern and central Europe. Opposite patterns of temperature and precipitation anomalies are typically observed during strong negative phases of the NAO. During particularly prolonged periods dominated by one particular phase of the NAO, anomalous height and temperature patterns are also often seen extending well into central Russia and north-central Siberia.

      look for my eSci diary series Thursday evening.

      by FishOutofWater on Fri Jan 20, 2012 at 06:12:15 PM PST

      [ Parent ]

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