Open AccessModeling of the Adriatic Bora on the Croatian Coast
Author(s) -
Roza B. Berzegova,
Murat K. Bedanokov,
Saida K. Kuizheva
Publication year - 2019
Publication title -
ecologica montenegrina
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.534
H-Index - 10
eISSN - 2337-0173
pISSN - 2336-9744
DOI - 10.37828/em.2019.23.11
Subject(s) - geology , ridge , atmosphere (unit) , flow (mathematics) , jet (fluid) , range (aeronautics) , troposphere , vortex , atmospheric sciences , geomorphology , meteorology , mechanics , physics , paleontology , materials science , composite material
The article considers the Adriatic bora as a phenomenon of flow around real mountains using a nonlinear analytical two-dimensional model. The atmosphere is presented as three layers: the lower layer represents the troposphere, and the other two represent the influence of the upper atmosphere. The shape of the relief is taken into account accurately, the interaction of the flows in the studied layers is approximate. It has been deduced that disturbances over the main ridge and in the leeward zone over the mountains are often characterized by the presence of a zone with rotors in the form of closed vortices and extended sections of vertical movements. The energy of the disturbances beyond the mountains is estimated by the jet stream velocity at the leeward slope. It has been deduced that its value lies in the range of 19–40 m/s. It’s been deduced that the characteristic cold snap during the bora is determined by the arrival of a colder air mass in the region, and not by the flow process itself. The height and the steepness of the leeward slope of the mountains, as well as the effects of turbulization of movements in the leeward zone are determining factors in increasing the velocity in the surface layer over the mountains.