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Article Tags: Papers Challenging AGW, Solar News
Fig. 2. Variations of external factors: (top panel) solar activity (SSN) and the C9-index of geomagnetic activity (dimensionless index); (bottom panel) variations of DVIGlobal (dimensionless index) and the aerosol backscattering coefficients () at wavelength 694.3 nm. The solid vertical lines indicate the dates of intensive volcanic eruptions (Volcanic Explosive Index (VEI) ≥ 5.0) for 1880–1991.
A paper published today in the Journal of Atmospheric and Solar-Terrestrial Physics finds a significant influence of solar activity upon Earth temperature during the second half of the 20th century.
The authors find surface temperature linked to the 11-year solar cycle, and also influenced by the timing of volcanic eruptions. Once again, the claim by climate alarmists that small variations in solar activity cannot control temperature or climate has been debunked by observations.
Abstract
In this paper we analyze the geographical distribution of the climate response to external forcing (solar, volcanic and geomagnetic) on the periods of 11 and 22 years. As a climate characteristic we use the data of the air-surface temperature (regional data sets).
Source: hockeyschtick.blogspot.co.uk
2013-01-19 10:18:28