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The Sun Bearing Down On You

189275882_4bc764b320_sBy Grizzo on Apr 03, 2007
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NOAA (ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/)
The NOAA has compiled a running tally of sunspot observations from 1749 to present (updated monthly). —Grizzo

Comments (3)

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mick
mick says

Wow. How cool is that sunspot graph? Amazing how regular the periods are for such a big sun. And amazing that people were counting them in 1749! Wiki says Chinese detected them in 28 BC. And somehow NOAA has reconstructed sunspot numbers back over 11,000 years. Amazing huh? Apparently it is done "based on dendrochronologically dated radiocarbon concentrations". Of course! Meanwhile some areas of Australia are currently missing patches of radio transmissions exactly because of sunspot activity.

posted about 1 year ago
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brian
brian says

accurately reconstructing data that far back is quite a feat.

posted about 1 year ago
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jack oneill says

It's disconcerting that the graph is getting larger through the years, notice the spikes becoming higher...

posted about 1 year ago

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