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Sekundarni jezik

Jezik: Angleški jezik OCCURENCE OF TEMPERATURE INVERSIONS ON POHORJE Temperature inversion is an increase of temperature with height. Frequency and intensity of the inversion are the most prominent in the morning during cold seasons. In sloping and hilly terrain the inversion chiefly occurs in concave terrain due to trapped cold air that flows down the near slopes. On Pohorje, the most frequent and intensified temperature inversion occurs on the western side where the Slovenjgraška basin is located. In other places the inversion is also frequent, however, the intensity is less prominent. Before sunrise the biggest temperature lapse rates can be seen in the layer of air up to 450 meters above sea level. The upper limit of the inversion commonly occurs between 800 and 850 meters above sea level. After sunrise this upper limit tends to decrease for approximately 50 meters with the intensity also being diminished. Throughout the afternoon the inversion decayed, and started forming again after eight p.m. Comparison of the southern and the northern part of Pohorje reveals us that in the lowest layer of air, that is the layer between 350 and 550 meters above sea level, the temperature lapse rates on the northern side tends to be bigger. The most common lapse rates are therefore between 0 and 0.5 °C/100 m. Lapse rates above 5 °C/100 m were much more infrequent. The strongest inversion occurs in situations when the weather is chiefly governed by anticyclones. The highest temperatures in such cases were measure between 750 and 850 meters above sea level. In cases where advection and cyclones were predominant modifiers of the weather, the inversion was very weak or it did not occur at all. Intensity of the temperature inversion diminished from December to April. Temperature inversion, temperature lapse rate, Pohorje, cloudiness, wind, difference in temperatures.

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