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GEOPHYSICAL RESEARCH LETTERS, VOL. 32, L18713, doi:10.1029/2005GL023849, 2005

Estimated solar contribution to the global surface warming using the ACRIM TSI satellite composite

N. Scafetta

Physics Department, Duke University, Durham, North Carolina, USA


B. J. West

Physics Department, Duke University, Durham, North Carolina, USA
Mathematical and Information Science Directorate, U.S. Army Research Office, Research Triangle Park, North Carolina, USA


Abstract

We study, by using a wavelet decomposition methodology, the solar signature on global surface temperature data using the ACRIM total solar irradiance satellite composite by Willson and Mordvinov. These data present a +0.047%/decade trend between minima during solar cycles 21–23 (1980–2002). We estimate that the ACRIM upward trend might have minimally contributed ∼10–30% of the global surface temperature warming over the period 1980–2002.

Received 17 June 2005; accepted 26 August 2005; published 28 September 2005.

Index Terms: 1616 Global Change: Climate variability (1635, 3305, 3309, 4215, 4513); 1650 Global Change: Solar variability (7537); 1626 Global Change: Global climate models (3337, 4928); 1699 Global Change: General or miscellaneous; 1739 History of Geophysics: Solar/planetary relationships.

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Citation: Scafetta, N., and B. J. West (2005), Estimated solar contribution to the global surface warming using the ACRIM TSI satellite composite, Geophys. Res. Lett., 32, L18713, doi:10.1029/2005GL023849.