caa a22 4500 467937761 CHVBK 20180406153002.0 cr unu---uuuuu 170328e20060201xx s 000 0 eng 10.1007/s00703-005-0142-y doi (NATIONALLICENCE)springer-10.1007/s00703-005-0142-y The role of the interaction between polar and subtropical jet in a case of depression rejuvenation over the Eastern Mediterranean [Elektronische Daten] [N. G. Prezerakos, H. A. Flocas, D. Brikas] Summary: In this paper, an attempt is made to investigate the synoptic-scale atmospheric conditions and dynamic processes leading to the rejuvenation of depressions or cyclogenesis over the Eastern Mediterranean during the cold period of the year. A case study analysis is carried out when the Polar Front Jet (PFJ) is positioned to the south of its normal seasonal position and interacts with the Subtropical Jet Stream (SJS), which is positioned to the north of its normal seasonal position. It was found that the vigorous rejuvenation of a northeastwards moving Atlas mountains depression on 15 March 1998 over Cyprus region is associated with an increase of the hydrodynamic instability due to the juxtaposition of a polar front jet streak to the subtropical jet stream. Furthermore, the rejuvenation is related to the combined effect of the direct and indirect cross vertical circulations appearing on the right side of the entrance of a polar jet streak and the left side of a subtropical jet streak exit, respectively. Springer-Verlag/Wien, 2005 Prezerakos N. G. General Department of Mathematics, Technological Education Institute of Piraeus, Greece aut Flocas H. A. Department of Applied Physics, Faculty of Physics, University of Athens, Greece aut Brikas D. Hellenic National Meteorological Service, Hellinicon, Greece aut Meteorology and Atmospheric Physics Springer-Verlag 92/1-2(2006-02-01), 139-151 0177-7971 92:1-2<139 2006 92 703 https://doi.org/10.1007/s00703-005-0142-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00703-005-0142-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Prezerakos N. G. General Department of Mathematics, Technological Education Institute of Piraeus, Greece aut NATIONALLICENCE 700 1- Flocas H. A. Department of Applied Physics, Faculty of Physics, University of Athens, Greece aut NATIONALLICENCE 700 1- Brikas D. Hellenic National Meteorological Service, Hellinicon, Greece aut NATIONALLICENCE 773 0- Meteorology and Atmospheric Physics Springer-Verlag 92/1-2(2006-02-01), 139-151 0177-7971 92:1-2<139 2006 92 703 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer