Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991soph..132..409h&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 132, April 1991, p. 409-413.
Astronomy and Astrophysics
Astronomy
4
Cosmic Dust, Secular Variations, Seeing (Astronomy), Space Observations (From Earth), Sunspots, Astronomical Observatories, Atmospheric Turbulence, Visual Observation
Scientific paper
Catalogs of nontelescopic sunspot observations from the Orient have been presented by several authors. Since atmospheric dust facilitates naked-eye observation of the sun, its possible influence is investigated by comparing the historical records of sunspot sightings and atmospheric dust storms. A distinction is made between the record up to the end of the Ming dynasty that is based on court documents and the post-Ming reports that are all provincial sightings. The earlier record is found to be significantly anti-correlated with C-14 fluctuations, while the latter one is weakly anticorrelated. The provincial sightings contain a much larger signature of atmospheric turbidity, as is also indicated by their poor comparison with telescopic data.
Gong Gaofa
Hameed Sultan
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