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+ 41 (0) 32 718 18 12
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+ 41 (0) 32 718 17 01
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Neuchâtel
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CH
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Academic Institute
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786 Résultats
Voici les éléments 1 - 10 sur 786
- PublicationMétadonnées seulementLes réfugiés hongrois de 1956 dans le canton de Neuchâtel(2009)
- PublicationMétadonnées seulement
- PublicationMétadonnées seulementSummer 2003 maximum and minimum daily temperatures over a 3300 m altitudinal range in the Alps(2004)The summer of 2003 was extremely hot in Western Europe and in the Alps. Here I analyse the role of elevation in the temperatures measured in 2003, and I compare daytime and nighttime values. Records from 16 stations at varying elevations show that, during the night, there was a significant correlation between heat and altitude. Hot nighttime temperatures were particularly frequent at low elevation. The frequency of unusually hot daytime highs was not correlated with altitude, but with the average degree of insolation of the sites. Compared to long-term averaged values (1961-1990) the temperatures were hottest in the normally sunniest sites. The unusual nature of the 2003 heat wave was not the absolute daily extreme values, but the lack of cool temperatures and the large number of very warm days. Averaged over all climate stations, half of the days in summer were hotter than the 90th percentile (climate normals 1961-1990), with up to 72% at some stations.
- PublicationMétadonnées seulementUse of LIDAR measurements and numerical models in air pollution research(1990)
; - PublicationMétadonnées seulement
- PublicationMétadonnées seulement
- PublicationMétadonnées seulementChanges in daily and nightly day-to-day temperature variability during the twentieth century for two stations in Switzerland(2001)An analysis of day-to-day variability was performed on two century-longs daily minimum and maximum temperature series from Switzerland. Warmer temperatures during the 20(th) century have been accompanied by a reduction in day-to-day variability, particularly for minimum temperatures and for winter. There is a significant negative correlation between day-to-day variability and the skewness of the temperature distribution, particularly in winter and for minimum temperatures. Lower variability is linked to a reduced number of cold days and nights. Higher NAO index values tend to be associated not only with warmer temperatures but also with lower day-to-day variability. This paper confirms that the temperature warming during the 20(th) century has happened mainly through the loss of the coldest part of the series, not only in the 24-hour or yearly cycle, but also through the loss of the coldest episodes in each month.