Image:Sunspots 11000 years.jpg

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11,400 year sunspot reconstruction. 1950 is year 0 on left side. SN=sunspot number. BP=years before present. Hatching marks the previous period of high activity more than 8,000 years ago which is similar to present level of activity. This period corresponds with the Southern Hemisphere warming associated with the w:Holocene Climatic Optimum. 2005. 11,000 Year Sunspot Number Reconstruction. IGBP PAGES/World Data Centre for Paleoclimatology Data Contribution Series #2005-015. NOAA/NGDC Paleoclimatology Program, Boulder CO, USA. Solanki, S.K., I.G. Usoskin, B. Kromer, M. Schussler and J. Beer (2004). , Nature, 431(7012: 1084-1087. DOI: 10.1038/nature02995
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Solanki, S.K., et al. 2005. 11,000 Year Sunspot Number Reconstruction. IGBP PAGES/World Data Centre for Paleoclimatology Data Contribution Series #2005-015. NOAA/NGDC Paleoclimatology Program, Boulder CO, USA.
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current 07:54, 16 May 2005 721×388 (40 KB) Xgarciaf (11,400 year sunspot reconstruction. 1950 is year 0 on left side. * '''SN''': sunspot number. * '''BP''': years Before Present. Hatching marks the previous period of high activity more than 8,000 years ago which is similar to present level of a)
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