Mathematics – Logic
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsh33c..04s&link_type=abstract
American Geophysical Union, Fall Meeting 2005, abstract #SH33C-04
Mathematics
Logic
1616 Climate Variability (1635, 3305, 3309, 4215, 4513), 1637 Regional Climate Change, 1650 Solar Variability (7537), 1739 Solar/Planetary Relationships, 3280 Wavelet Transform (3255, 4455)
Scientific paper
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% per decade trend between minima during solar cycles 21-23 (1980-2002). By using the phenomenological climate sensitivity to a 22-year cycle, we estimate that the ACRIM upward trend might have contributed 10-30% of the global surface temperature warming over the period 1980-2002. Moreover, by comparing the phenomenological climate sensitivity to the 11-year solar cycle with those hypothesized by some energy balance models we conclude that the former is 1.5-3 times stronger than the latter. Finally, we study the climate sensitivity in different regions of the Earth.
Scafetta Nicola
West Bruce J.
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