J/A+A/390/707 Hemispheric Sunspot Numbers 1975-2000 (Temmer+, 2002)
Hemispheric Sunspot Numbers Rn and Rs: Catalogue and N-S asymmetry analysis
Temmer, M., Veronig, A., Hanslmeier, A.
<Astron. Astrophys. 390, 707 (2002)>
=2002A&A...390..707T 2002A&A...390..707T
ADC_Keywords: Sun
Keywords: catalogs - Sun: activity - Sun: rotation - Sun: sunspots
Description:
Hemispheric sunspot numbers including the time span from 1975-2000 are
presented. The Sunspot Numbers are calculated from sunspot drawings
made at the Kanzelhoehe Solar Observatory (KSO), Austria. The counted
northern and southern Sunspot Numbers are normalized and multiplied
with the International Sunspot Numbers taken from SIDC for matching
days in order to provide the data within an international usage. Days
without observation by KSO (about 27 percent) were reconstructed
applying a linear interpolation method. As validation of the data,
regression methods and a cross-correlation analysis are made with
hemispheric Sunspot Numbers from SIDC for the available time span
1992-2000 obtaining very good agreements. The results are given in
monthly mean and smoothed monthly mean Sunspot Numbers. Based on this
data set an analysis concerning the North-South asymmetry is made in
the paper.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 55 312 Date, monthly mean and smoothed monthly mean
northern and southern Sunspot Numbers
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See also:
J/A+AS/106/327 : Observations of the Sun during 1993 at Santiago (Noel 1994)
J/A+AS/110/351 : Sun observations in 1992 (Sanchez+, 1995)
J/A+AS/113/131 : Observations of the Sun during 1994 (Noel, 1995)
J/A+AS/113/237 : Ultraviolet Spectrum of the Sun (Samain, 1995)
J/A+AS/132/195 : Astrolabe observations of the Sun in 1995-1997 (Noel 1998)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 7 A7 "YYYY/MM" Date Year and month of calculated values
8 A1 --- r_Date [*] Months with few observations (1)
9- 13 F5.1 --- Nmon Monthly northern sunspot numbers
15- 19 F5.1 --- Smon Monthly southern sunspot numbers
21- 25 F5.1 --- Nsmooth ? Smoothed monthly northern
sunspot numbers (2)
27- 31 F5.1 --- Ssmooth ? Smoothed monthly southern
sunspot numbers (2)
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Note (1): Months with a low number of observation days
(Oct. 1979 (10d), Apr. 1989 (10d), May 2000 (5d))
are signed to note that the statistical significance could be lower
Note (2): Daily data are smoothed with a 365 days running average followed by
monthly mean calculations
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Acknowledgements: Manuela Temmer
(End) Manuela Temmer [IGAM, Univ.Graz] 10-May-2002