RefDoc
Haut

Faire une nouvelle recherche
Make a new search
Lancer la recherche


Titre du document / Document title

Solar turbulence in earth's global and regional temperature anomalies

Auteur(s) / Author(s)

SCAFETTA Nicola ; GRIGOLINI Paolo ; IMHOLT Timothy ; ROBERTS Jim ; WEST Bruce J. ;

Résumé / Abstract

This paper presents a study of the influence of solar activity on the earth's temperature. In particular, we focus on the repercussion of the fluctuations of the solar irradiance on the temperature of the Northern and Southern hemispheres as well as on land and ocean regions. While solar irradiance data are not directly analyzed, we make use of a published solar irradiance reconstruction for long-time-scale fluctuations, and for short-time-scale fluctuations we hypothesize that solar irradiance and solar flare intermittency are coupled in such a way that the solar flare frequency fluctuations are stochastically equivalent to those of the solar irradiance. The analysis is based upon wavelet multiresolution techniques and scaling analysis methods for processing time series. The limitations of the correlation analysis applied to the short-time-scale fluctuations are discussed. The scaling analysis uses both the standard deviation and the entropy of the diffusion generated by the temperature signals. The joint use of these two scaling methods yields evidence of a Lévy component in the temporal persistence of the temperature fluctuations within the temporal range from a few weeks to a few years. This apparent Lévy persistence of the temperature fluctuations is found, by using an appropriate model, to be equivalent to the Lévy scaling of the solar flare intermittency. The mean monthly temperature data sets cover the period from 1856 to 2002.

Revue / Journal Title

Physical review. E, Statistical, nonlinear, and soft matter physics    ISSN  1539-3755 

Source / Source

2004, vol. 69 (2), no2, pp. 026303.1-026303.13

Langue / Language

Anglais

Editeur / Publisher

American Physical Society, College Park, MD, ETATS-UNIS  (2001) (Revue)

Localisation / Location

INIST-CNRS, Cote INIST : 144 E, 35400011150787.0480

Nº notice refdoc (ud4) : 15649830



Faire une nouvelle recherche
Make a new search
Lancer la recherche
Bas