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| Titel |
Recent variations of the nivo - thermic parameters in the territory of the Dolomites and venetian Prealps Recent variations of the nivo - thermic parameters in the territory of the Dolomites and venetian Prealps |
| VerfasserIn |
Massimiliano Fazzini, Anselmo Cagnati, Serena Camattari |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250127771
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| Publikation (Nr.) |
 EGU/EGU2016-7681.pdf |
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| Zusammenfassung |
| The analysis of recent snowfalls in the medium – high mountain areas of the Mediterranean
basin, is considered as an important tool to evaluate the underway climatic change. Aim of
the study was to define the space - altitudinal distribution of snowfall and temperatures and to
outline the recent trend, considering the signal defined by similar recent studies in the Alps,
which show a general decrease in of snowfall and an increase significant of temperatures. It
was therefore considered monthly and seasonal thermo - nivometric data - relating to fifteen
automatic measurement stations - operated by ARPAV - located at altitudes between
approximately 1430 and 2620 ma.s.l. and activated during the second half of the 80s. The
study area is extended for about 5000 sqkm. The parameters analysed were: cumulated of
fresh snow, snowy days (with Hn> 1cm), continued persistence of snow on the
ground and average air temperatures. in this area, at about 2000 meters, an average
of 360 cm of seasonal fresh snow - between November and May - are recorded;
the snow remains on the ground for about 190 days and there are about 50 days
with snowfall (hn> 1cm). Fresh snow increases, on average, of about 18 cm and
remains down 8.5 in addition, each 100 meters of altitude. Finally, the average annual
temperature is of about 2,8˚ C, with an elevation of 0˚ C at 2780 m a.s.l. The
nivometric and thermometric trend shows a quite surprising evidences; both as
regards the fresh snow for both snowy days, there was a general increase - resulting
from some recent seasons very snowy – while with regard to the persistence of
the snow on the ground, a signal more contrasted is evident. Temperatures show
a marked increase - about 1.5˚ C - in the pre-Alps, while in the Dolomites, the
temperatures tend widely to decline by about 0.5˚ C. Given the particularities of
these results, it would be essential to extend the study area at the entire Venice
Tridentine mountains, to understand if these signals is found to a more extensive
scale
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