![]() Begert M., Schlegel T., Kirchhofer W., 2005: Homogeneous Temperature and Precipitation Series of Switzerland from 1864 to 2000.The following literature sources were used: No homogeneous series are available as yet for snow or for indices that are based on sunshine duration these are evaluated from the original data, which is checked and adjusted. This would be the case, for example, if the conditions under which meteorological data are collected have changed. Climate data are homogenised when they are adjusted to take account of any influences that are not associated with climate or climate change. They are calculated using homogenised data for the normal periods from 1864 to date and 1961 to date, where these data exist. Available data and their qualityĬlimate indices are available for most of the stations in the Swiss National Basic Climatological Network. ![]() Whether a climate index shows any statistically verifiable trend, and how strong that trend is, depends on the location and the observation period. Since the 1980s, there has also been a trend towards more sunshine and clear days. ![]() At the same time, the number of frost and ice days (minimum or maximum temperature below 0☌) is decreasing.Īnother result of warming is a decrease in the number of fresh snow days and days with snow cover, despite a trend towards higher levels of winter precipitation. For example, the observed warming also means that the number of summer days and hot days is increasing (daily maximum temperature 25☌ or 30☌ or more, respectively), as is the number of tropical nights (lowest temperature not below 20☌). To be told as a sign for fair weather the barometer should be steady, or rising about 0.004 inch per hour for rain falling slowly about 0.004 inch per hour for wind falling gradually about 0.004 inch per hour for wind and ram falling moderately about 0.015 inch per hour and for stormy weather falling or rising rapidly about 0.021 inch per hour is precision which meteorologists have no knowledge of, especially when most of our barometers only read to hundredths of an inch.A number of climate indices clearly show how Switzerland is affected by climate change. The wind scale given is not in accordance with recent knowledge the equivalent velocity in miles per hour, and equivalent wind pressure in pounds per square foot for the several units of the wind scale, are very different from those now generally accepted. Such statements as “A white frost never lasts more than three days,” “Quick thaw foretells long frost,” “Hoar frost predicts rain,” are bold, but probably incorrect. For town life many are altogether inapplicable. For country life, some quoted should undoubtedly receive attention, but the general belief in all would tend to much confusion. Many of the so-called weather signs which are collated, especially those relating to the movements of animals, birds, and insects, have been handed down to us from the ancients, and are somewhat amusing. ![]() The information given seems too elaborate, and might easily have been rendered more simple it is not very scientific, but it probably aims to be chiefly of a popular character. Ballance, and the publishers suggest that the “weather indicator” will be found useful for schools, clubs, public libraries, hotels, boys' brigades, and boy scouts. ![]() The notes, tables, &c., have been compiled by Mr. THIS is an issue in map form of what the publishers term a “weather indicator,” to be obtained either in a sheet or mounted on rollers. ![]()
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