Scaling Properties and Persistence of Long-Term Solar Activity

• Published in: Atmosphere
• Main Authors: Lepreti, Fabio, Carbone, Vincenzo, Vecchio, Antonio
• Other Authors: Università della Calabria Arcavacata di Rende, Italia = University of Calabria Italy = Université de Calabre Italie (UniCal), INAF - Osservatorio Astronomico di Roma (OAR), Istituto Nazionale di Astrofisica (INAF), Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics (LESIA), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Radboud University Nijmegen
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2021
• Subjects: solar activity; long-range correlations; scaling laws; [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR]; Greenland; Antarc*; Antarctica; ice core
• Online Access: https://hal.sorbonne-universite.fr/hal-03278916; https://hal.sorbonne-universite.fr/hal-03278916/document; https://hal.sorbonne-universite.fr/hal-03278916/file/atmosphere-12-00733.pdf; https://doi.org/10.3390/atmos12060733

International audience The long-range correlations associated with the presence of persistence are investigated by applying the detrended fluctuation analysis (DFA) on three different proxies of long-term solar activity. The considered datasets are a sunspot number reconstruction (SNR04) obtained from the atmospheric activity of the cosmogenic isotope 14C derived from tree rings, a total solar irradiance reconstruction (TSIR12) obtained from several 10Be ice core records from Greenland and Antarctica in combination with the global record of 14C in tree rings and a new multi-proxy sunspot number reconstruction (SNR18), also derived from 10Be datasets and the global 14C production series. The DFA scaling exponents found for the three time series are similar (lying in the range between 0.70 and 0.77) and the scaling ranges are comparable. These results indicate the presence of long-range correlations with persistence, in substantial agreement with the findings of previous studies carried out on other solar activity indices and proxies.