On the Spoerer Minimum

Details On the Spoerer Minimum On the Spoerer Minimum

Jan 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.118..159j&link_type=abstract

(IAU, Asian-Pacific Regional Meeting, 3rd, Kyoto, Japan, Sept. 30-Oct. 5, 1984) Astrophysics and Space Science (ISSN 0004-640X),

Astronomy and Astrophysics

Astrophysics

4

Auroras, Solar Activity, Sunspots, Climatology, Frequency Distribution

Scientific paper

The authors have examined the real behaviour of solar activity during the period AD 1400 - 1600. The results are as follows: (1) the distributions of the 20 naked-eye sunspot records are inhomogeneous. There are 2 sightings in the 15th century and 18 sightings in the 16th century; (2) the distributions of auroral records are similar to sunspot. There are 33 records in the 15th century and 315 records in the 16th century; (3) the climatic fluctuations in China show that the period AD 1430 - 1520 was cold while the period AD 1520 - 1620 was warm. These facts clearly demonstrate that the Spörer Minimum, if it extended from AD 1460 to 1550, could be a specious result and it, if its extent was AD 1400 - 1510, is a real feature of solar variability in that time.

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