A comparison of the spectral characteristics of the Wolf Sunspot Number (R Z) and Group Sunspot Number (R G)

Details A comparison of the spectral characteristics of the Wolf Sunspot Number (R Z) and Group Sunspot Number (R G) A comparison of the spectral characteristics of the Wolf Sunspot Number (R Z) and Group Sunspot Number (R G)

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004soph..223..305f&link_type=abstract

Solar Physics, Volume 223, Issue 1-2, pp. 305-318

Physics

5

Scientific paper

The objective of this paper is to compare the spectral features of the recently derived Group Sunspot Numbers (R G) and the traditional Wolf Sunspot Numbers (R Z) for the 1700 1995 period. In order to study the spectral features of both time series, two methods were used, including: (a) the multitaper analysis and (b) the wavelet analysis. Well-known features of the solar variability, such as the 98.6-yr (Gleissberg cycle), 10 11-yr (Schwabe cycle) and 5-yr (second solar harmonic) periodicities were identified with high confidence using the multitaper analysis. Also observed was a larger amount of power spread in high frequencies for R Z than for R G spectra. Furthermore, a multitaper analysis of two subsets, A (1700 1850) and B (1851 1995), has indicated that the main differences occurred in the first subset and seem to be due to uncertainties in the early observations. The wavelet transform, which allows observing the spectra evolution of both series, showed a strong and persistent 10 11-yr signal that remained during the whole period. The Meyer Wavelet Transform was applied to both R Z and R G. This study indicates that the main spectral characteristics of both series are similar and that their long-term variability has the same behavior.

Affiliated with

Also associated with

No associations

Rating

A comparison of the spectral characteristics of the Wolf Sunspot Number (R Z) and Group Sunspot Number (R G) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A comparison of the spectral characteristics of the Wolf Sunspot Number (R Z) and Group Sunspot Number (R G), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A comparison of the spectral characteristics of the Wolf Sunspot Number (R Z) and Group Sunspot Number (R G) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1821352