Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.506..855t&link_type=abstract
In: Solar variability: from core to outer frontiers. The 10th European Solar Physics Meeting, 9 - 14 September 2002, Prague, Cze
Physics
Sunspot Numbers: Catalogues
Scientific paper
Sunspot drawings are provided on a regular basis at the Kanzelhöhe Solar Obseratory, Austria, and the derived relative sunspot numbers are reported to the Sunspot Index Data Center in Brussels. From the daily sunspot drawings, we derived the northern, Rn, and southern, Rs, relative sunspot numbers for the time span 1975-2000. In order to accord with the International Sunspot Numbers Ri, the Rn and Rs have been normalized to the Ri, which ensures that the relation Rn+Rs = Ri is complied. For validation, the derived Rn and Rs are compared to the international northern and southern relative sunspot numbers, which are available since 1992. The regression analysis performed for the period 1992-2000 reveals good agreement with the International hemispheric Sunspot Numbers. The monthly mean and the smoothed monthly mean hemispheric Sunspot Numbers are compiled to a catalogue. In addition, the daily hemispheric Sunspot Numbers are made available via Internet.
Hanslmeier Arnold
Temmer Manuela
Veronig Astrid
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