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Effect of Warming on Temperature Variability in Switzerland
Reference
Rebetez, M. 2001. Changes in daily and nightly day-to-day temperature variability during the twentieth century for two stations in Switzerland. Theoretical and Applied Climatology 69: 13-21.

What was done
The author analyzed the day-to-day variability of two long-term temperature series from Switzerland over the period 1901-1999 that had experienced a 1.5 and 1.2C increase in temperature, respectively.

What was learned
A correlation was found between warmer temperatures and a reduction in day-to-day temperature variability at both sites. The decline in day-to-day variability was linked to a reduced number of cold days and nights.

What it means
The results of this study, in the words of the author, indicate that "warmer temperatures are accompanied by a general reduction of variability, both in daily temperature range and in the monthly day-to-day variability." Thus we see that it is cooling, and not warming, that brings an increase in temperature variability. Contrary to predictions of climate alarmists, therefore, global warming should not lead to an increase in temperature variability. In fact, it should do just the opposite.