Statistics of sunspot group clusters
نویسندگان
چکیده
منابع مشابه
A New Calibrated Sunspot Group Series Since 1749 : Statistics of Active Day Fractions
Although the sunspot-number series have existed since the mid-19th century, they are still the subject of intense debate, with the largest uncertainty being related to the “calibration” of the visual acuity of individual observers in the past. Usually a daisy-chain regression method is applied to inter-calibrate the observers which may lead to significant bias and error accumulation. Here we pr...
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ژورنال
عنوان ژورنال: Journal of Space Weather and Space Climate
سال: 2013
ISSN: 2115-7251
DOI: 10.1051/swsc/2013032