Lomb–Scargle periodogram analysis of the periods around 5.5 year and 11 year in the international sunspot numbers
Sign Up to like & getrecommendations! Published in 2018 at "Astrophysics and Space Science"
DOI: 10.1007/s10509-018-3332-z
Abstract: The New International Sunspot Numbers (NISNs) have been successfully compiled and can be downloaded from the World Data Center-Sunspot index and Long-term Solar Observations, Royal Observatory of Belgium, Brussels. The periods in these NISNs have… read more here.
Keywords: lomb scargle; year; international sunspot; scargle periodogram ... See more keywords
Relationships Between foF2 and Various Solar Activity Proxies
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DOI: 10.1029/2022sw003359
Abstract: To study ionospheric climate, to model the ionosphere (e.g., the International Reference Ionosphere—IRI) and to investigate its long‐term changes and trends, solar activity proxies/indices have been used, because long and homogeneous data series of solar… read more here.
Keywords: f10 sunspot; sunspot numbers; relationships fof2; activity proxies ... See more keywords
Responses and Periodic Variations of Cosmic Ray Intensity and Solar Wind Speed to Sunspot Numbers
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DOI: 10.1155/2020/3527570
Abstract: To investigate the periodic behaviour and relationship of sunspot numbers with cosmic ray intensity and solar wind speed, we present analysis from daily data generated from 1995 January to 2018 December. Cross-correlation and wavelet transform… read more here.
Keywords: cosmic ray; wind speed; sunspot numbers; solar wind ... See more keywords