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The Upper Tisa Valley. Preparatory proposal for Ramsay

The Upper Tisa Valley. Preparatory proposal for Ramsay

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Figure 7. Distribution of annual mean temperatures in the catchment area of the <strong>Upper</strong><br />

<strong>Tisa</strong> on the basis of an average over 40 years<br />

As the highest ridge of the Carpathians most often stops the wet air currents<br />

coming from the southwest, most of the precipitation occurs here. Its annual average<br />

reaches 1400 mm, 80% of which comes from the Atlantic and the Mediterranean, and<br />

the remaining 20% is created by local circulation.<br />

<strong>The</strong> Northeastern Carpathian region has a distinctive distribution of<br />

temperature and precipitation as it is situated in a transitional climatic belt. It is by far<br />

the continental nature of the climate that is prominent here. Mean temperature in<br />

January is between -2 and -4 degrees Celsius, so the figure of average annual<br />

fluctuation slightly surpasses the minimum of that of the continental type. Reversed<br />

thermal conditions are a common phenomenon in the basins of various sizes and in the<br />

deep valleys situated in the mountain ranges (Figure 7). Annual precipitation is greatly<br />

variable, usually at high altitudes it is 1200 mm, at low ones 800-1000 mm; and the<br />

lower basins are poor in precipitation (under 600 mm). In the Carpathians, mountain<br />

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