Physics – Geophysics
Scientific paper
Nov 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007jgrd..11224s03s&link_type=abstract
Journal of Geophysical Research, Volume 112, Issue D24, CiteID D24S03
Physics
Geophysics
17
Global Change: Solar Variability (7537), Global Change: Global Climate Models (3337, 4928), Global Change: Climate Variability (1635, 3305, 3309, 4215, 4513), Global Change: General Or Miscellaneous, History Of Geophysics: Solar/Planetary Relationships
Scientific paper
A phenomenological thermodynamic model is adopted to estimate the relative contribution of the solar-induced versus anthropogenic-added climate forcing during the industrial era. We compare different preindustrial temperature and solar data reconstruction scenarios since 1610. We argue that a realistic climate scenario is the one described by a large preindustrial secular variability (as the one shown by the paleoclimate temperature reconstruction by Moberg et al. (2005)) with the total solar irradiance experiencing low secular variability (as the one shown by Wang et al. (2005)). Under this scenario the Sun might have contributed up to approximately 50% (or more if ACRIM total solar irradiance satellite composite (Willson and Mordvinov, 2003) is implemented) of the observed global warming since 1900.
Scafetta Nicola
West Bruce J.
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