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Synoptic Processes Generating Windthrow. A Case Study for Apuseni Mountains (Romania)

Abstract : Windstorms are among the main factors causing damages to forest ecosystems. These meteorological phenomena cannot be predicted, prevented or controlled. They are occurring rapidly and take place in a meteorological context characterized by high velocities of the air currents. This paper analyses the characteristics of the severe meteorological events on 20 July 2011 which have led to windthrows on extended areas within the Apuseni Mountains in the Romanian Carpathians. The study highlights the evolution of the synoptic processes both at regional scale and at mesoscale. The meteorological analysis is carried out based on synoptic maps and by means of the data coming from the doppler WSR-98D radar in Bobohalma. The main results indicate the occurrence of the severe meteorological phenomena against the background of alternating atmospheric circulation types. The main cause is the transition of the zonal circulation into maritime tropical circulation. This contributed to the destabilizing of the warm and moist air masses that have generated strong storms at national level
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Paula Furtuna, Ionel Haidu, Narcis Maier. Synoptic Processes Generating Windthrow. A Case Study for Apuseni Mountains (Romania). Geographia Technica, Cluj University Press, 2018, 13 (2), pp.52-61. ⟨10.21163/GT_2018.132.04⟩. ⟨hal-02488137⟩

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