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In reply to tusenfem's comment: So, basically that says that there is no unusual low as stated by Tunga, or what do you want to say?
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I do not understand your question. Is it is there evidence to support the assertion that the solar magnetic cycle has been interrupted or that an interruption in the solar magnetic cycle will result in global cooling?
I have provided observational data and logic to support the assertion that the solar magnetic field has been interrupted. In the Baud thread "sun cycle 24" there are three papers referenced that predict an imminent, solar magnetic cycle minimum based three different logical premises: 1) solar physical model, 2) An analysis of the paleo record of past solar magnetic cycle changes, and a third based on solar barycentric motion that matches the paleo record.
In the Baud thread "solar cycle 24", there are multiple papers that provide paleoclimatic evidence of semi periodic abrupt climate change that correlation with past solar magnetic field changes. There is satellite data and analysis of the earth's albedo, provided in the Baud thread "solar cycle 24" that supports the assertion that there was a reduction in planetary cloud cover which would have caused a portion of the planetary warming during the 20th century.
Based on the paleoclimatic record the planet should if that line of reasoning is correct, abruptly cool, due to solar magnetic field changes which will increase planetary cloud cover. So far the planetary temperature data does indicate abrupt cooling.
This is for example, only one of a large group of papers all of which note past abrupt climate changes correlated with solar magnetic field changes. The problem was how did a solar change if it was not a change in TSI, affect planetary temperature.
Link: Role of solar forcing upon climate change
http://scholar.google.com/url?sa=U&q...ng/VanGeel.pdf
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"A number of those Holocene climate cooling phases... most likely of a global nature (eg Magney, 1993; van Geel et al, 1996; Alley et al 1997; Stager & Mayewski, 1997) ... the cooling phases seem to be part of a millennial-scale climatic cycle operating independent of the glacial-interglacial cycles (which are) forced (perhaps paced) by orbit variations."
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"... we show here evidence that the variation in solar activity is a cause for the millennial scale climate change."
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Last 40 kyrs
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Figure 2 in paper. (From data last 40 kyrs)... "conclude that solar forcing of climate, as indicated by high BE10 values, coincided with cold phases of Dansgaar-Oeschger events as shown in O16 records"
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Recent Solar Event
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"Maunder Minimum (1645-1715) "...coincides with one of the coldest phases of the Little Ice Age... (van Geel et al 1998b)
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Periodicity
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"Mayewski et al (1997) showed a 1450 yr periodicity in C14 ... from tree rings and ...from glaciochemicial series (NaCl & Dust) from the GISP2 ice core ... believed to reflect changes in polar atmospheric circulation.."
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