Tuesday, November 13, 2012

New paper finds the highest storm activity is associated with cold periods

A new paper published in Nature Geoscience examines climate change over the past 11,500 years and finds, contrary to the claims of climate alarmists, that the highest storm activity is associated with cold periods. According to the authors, "We find that high storm activity occurred periodically with a frequency of about 1,500 years, closely related to cold and windy periods." The paper adds to several others showing that global warming decreases storm activity and extreme weather


Persistent non-solar forcing of Holocene storm dynamics in coastal sedimentary archives


Nature Geoscience
 
(2012)
 
doi:10.1038/ngeo1619
Received
 
Accepted
 
Published online
 
Considerable climatic variability on decadal to millennial timescales has been documented for the past 11,500 years of interglacial climate123. This variability has been particularly pronounced at a frequency of about 1,500 years, with repeated cold intervals in the North Atlantic13. However, there is growing evidence that these oscillations originate from a cluster of different spectral signatures4, ranging from a 2,500-year cycle throughout the period to a 1,000-year cycle during the earliest millennia. Here we present a reappraisal of high-energy estuarine and coastal sedimentary records from the southern coast of the English Channel, and report evidence for five distinct periods during the Holocene when storminess was enhanced during the past 6,500 years. We find that high storm activity occurred periodically with a frequency of about 1,500 years, closely related to cold and windy periods diagnosed earlier123. We show that millennial-scale storm extremes in northern Europe are phase-locked with the period of internal ocean variability in the North Atlantic of about 1,500 years4. However, no consistent correlation emerges between spectral maxima in records of storminess and solar irradiation. We conclude that solar activity changes are unlikely to be a primary forcing mechanism of millennial-scale variability in storminess.

1 comment:

  1. Typical IPCC myopic view of the Sun. All they can see is Solar Irradiance. As many times as we tell them it is the solar magnetic fields that affect our weather, they continue to stay firmly on stupid. Magnetic polarity and intensity control our jet stream which, in turn, effect windy periods and other associated necessary events. There is also the effect of changes in cloud cover based on energetic particles from the Sun.

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