Add to ORKGHigh resolution power spectra of 77 years of Zurich daily sunspot numbers were computed using various lags and data point intervals. Major harmonic peaks of the approximately 124-month period showed up strongly as well as the 27-day solar rotational period
Efforts to further verify a previously reported technique for predicting monthly sunspot numbers ove...
The instrumentation, data, and preliminary results from the summer, 1984, solar oscillation observin...
The records concerning the number, sizes, and positions of sunspots provide a direct means of charac...
Auto and cross-spectra of relative sunspot number and slowly varying component of solar radiation at...
Models and spectra of sunspots were studied, because they are important to energy balance and variab...
Aims. Sunspot number series are composed from observations of hundreds of different observers that r...
International audiencePrediction of solar activity strength for solar cycles 23 and 24 is performed ...
The International Sunspot Number is used as a measure of the level of solar activity in many importa...
Solar activity during the period October 28, 1964 through August 27, 1965 is presented in the form o...
Evaluation of several procedures that apply rarely used and exotic mathematical functions yields a u...
Earlier studies of the periodic changes in cosmic ray intensity by power spectral analysis provided ...
Statistical studies of solar cycles showing high correlation between solar perturbations and proton ...
An eigenvector analysis procedure was used to analyze and develop algorithms for predicting sunspot ...
A statistical study of formulas for predicting the sunspot number several years in advance is report...
Visual sunspot observations are at the base of the single longest scientific record ofsolar activity...
Efforts to further verify a previously reported technique for predicting monthly sunspot numbers ove...
The instrumentation, data, and preliminary results from the summer, 1984, solar oscillation observin...
The records concerning the number, sizes, and positions of sunspots provide a direct means of charac...
Auto and cross-spectra of relative sunspot number and slowly varying component of solar radiation at...
Models and spectra of sunspots were studied, because they are important to energy balance and variab...
Aims. Sunspot number series are composed from observations of hundreds of different observers that r...
International audiencePrediction of solar activity strength for solar cycles 23 and 24 is performed ...
The International Sunspot Number is used as a measure of the level of solar activity in many importa...
Solar activity during the period October 28, 1964 through August 27, 1965 is presented in the form o...
Evaluation of several procedures that apply rarely used and exotic mathematical functions yields a u...
Earlier studies of the periodic changes in cosmic ray intensity by power spectral analysis provided ...
Statistical studies of solar cycles showing high correlation between solar perturbations and proton ...
An eigenvector analysis procedure was used to analyze and develop algorithms for predicting sunspot ...
A statistical study of formulas for predicting the sunspot number several years in advance is report...
Visual sunspot observations are at the base of the single longest scientific record ofsolar activity...
Efforts to further verify a previously reported technique for predicting monthly sunspot numbers ove...
The instrumentation, data, and preliminary results from the summer, 1984, solar oscillation observin...
The records concerning the number, sizes, and positions of sunspots provide a direct means of charac...