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Joint International Conference on Long-term Experiments ...

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0<br />

Figure no.2: Variati<strong>on</strong> of the number of the frosty days<br />

(minimum temperature ≤ 0ºC) in the Crisul Repede<br />

hydrographical basin during the period 1970-2005<br />

I II III IV V VI VII VIII IX X XI XII An<br />

Borod<br />

Oradea<br />

Sacueni<br />

Stâna de Vale<br />

3. Average frequency of winter days (maximum temperature≤0ºC)<br />

Winter days are recorded from November to March, in the cold seas<strong>on</strong>, their frequency<br />

rises al<strong>on</strong>g with the increasing activities of the Scandinavian, Greenland and especially<br />

the Siberian anticycl<strong>on</strong>e, which c<strong>on</strong>diti<strong>on</strong>s the arctic air masses movement to the South.<br />

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