!!!Klima
Climate: Austria's climate is predominantly temperate. In the Alps
(with the exception of dry areas in the interior), in the Alpine
foothill area and in the northwest (Muehlviertel region) it is
influenced by the central European oceanic climate with humid winds,
in the northeast, east and southeast (Waldviertel and Weinviertel
regions, Vienna Basin, Burgenland, hills in eastern Styria, Klagenfurt
Basin) by the pannonic and illyric continental climate, with scant
precipitation, hot summers and cold winters, in the southernmost
regions (Carinthia, East Tirol) by Mediterranean precipitation. The
Alps form a barrier, which in the west is consistent with the central
Alps, and in the east with the northern limestone Alps in winter, in
summer with the ridge of the Niedere Tauern and the Eisenerzer Alpen
mountain ranges. Precipitation decreases from the west to the east and
usually increases with altitude ("Steigungsregen"/"ascending rain").
The areas with most precipitation (average annual mean precipitation
2,000-2,500 mm and more) are those bordering mountain ranges (northern
and southern limestone Alps) and the ridge of the Hohe Tauern
mountains, the areas with least precipitation (annual average below
600 mm) are the Seewinkel area in Burgenland, the northeast of the
Vienna Basin and the Marchfeld region, as well as locally the
Weinviertel and the central and northern Waldviertel regions, in
particular the lower valley of the River Kamp. (300-400 mm). In
January the highest amount of snow falls in the Alps below an altitude
of 1,200 m, in higher regions most snow falls in March and April. The
permanent snow line is at 2,700 m in the northern limestone Alps, at
2,900 m in the Hohe Tauern mountains and 3,000-3,100 m above sea level
in the Oetztal Alps, that is about 100-200 m higher than 100 years
ago. In closed-in basins, valleys and troughs below 1,200 m
temperature inversion occurs frequently in winter ( Inversion). But
the places with the longest sunshine lie in these areas above this
altitude, i.e. the Hungerburg terrace and the Seegrube near Innsbruck,
the lower mountains in Tirol, the terraces around Aflenz, the
Stolzalpe and the southern slopes of the lower mountains in Carinthia.
The area around Lake Neusiedl and the central Waldviertel region are
equally favoured with much sunshine (1,900-2,000 hours annually, as
compared with Vienna's 1,838 hours, Zurich 1,760, Davos 1,814). The
cold centres lie in the Lungau region (upper valley of River Mura,
Tamsweg, St. Michael), in the middle of the Enns valley and in the
Kamp valley south of Zwettl. Local and regional wind systems are of
major importance in the Alps, in particular the Foehn, which has an
unfavourable influence on the health of many people and a dehydrating
effect. Precipitation tends to decrease in the dry areas in the
northeast and east, in the Alps it is rather stable or tends to
increase slightly; average temperatures are clearly rising,
particularly in winter, in summer heat and dry periods appear to occur
more often then formerly.
!Literature
H. Nagl, Klima- und Wasserbilanztypen Oesterreichs (=
Geographischer Jahresbericht aus Oesterreich XL, 1981), 1983;
Oesterreich-Atlas, Karte der Klima-Typen (III/9),
Bobek-Kuez-Zwittkovits, mit Erlaeuterungen; F. Zwittkovits,
Klima-Typen, Klima-Bereiche, Klima-Facetten. Erlaeuterungen zur
Klima-Typenkarte von Oesterreich, 1983.
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