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.
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References
P Alpert E Ganer (2001) ArticleTitleSaharan mineral dust measurements from TOMS – comparison to surface observations over the Middle East for the extreme dust storm, 14–17 March 1998. J Geophys Res 106 18275–18286 Occurrence Handle10.1029/2000JD900366
Bjerknes (1951) Extratropical cyclones. In: Compendium of meteorology (Malone TF, ed). Am Meteor Soc, Boston, MA, pp 577–598
F Bouttier GA Kelly (2001) ArticleTitleObserving systems experiments in the ECMWF 4D-Var data assimilation. Q J R Meteor Soc 127 1469–1488 Occurrence Handle10.1256/smsqj.57418
Eliassen A (1962) On the vertical circulation in frontal zones. Geofys Publikasjoner, Norske Videnskaps-Akad, Oslo 24, pp 147–160
JH Hakim LW Uccellini (1992) ArticleTitleDiagnosing coupled jet-streak circulations for a Northern Plains snow band from the operational nested-grid model. Wea Forecast 7 26–48
JR Holton (1972) An introduction to dynamic meteorology. Academic Press New York London 511
ML Kaplan Y-L Lin DW Hamilton RA Rozumalski (1998) ArticleTitleThe numerical simulation of an unbalanced jetlet and its role in the Palm Sunday 1994 tornado outbreak in Alabama and Georgia. Mon Wea Rev 126 2133–2165
Karein AD (1979) The forecasting of cyclogenesis in the Mediterranean region. Ph.D. thesis, University of Edinburgh, Scotland, 159 pp
D Keyser MA Shapiro (1986) ArticleTitleA review of the structure and dynamics of upper level frontal zones. Mon Wea Rev 114 452–499
Palmen E, Newton CW (1969) Atmospheric circulation systems. Academic Press, 603 pp
S Petterssen (1956) Weather analysis and forecasting, vol. 1, 2nd ed. McGraw-Hill New York 428
NG Prezerakos (1985) ArticleTitleSynoptic scale atmospheric wave break down at 500 hPa over Europe during cold seasons. Arch Met Geophys Biocli 34 IssueIDA 145–158
NG Prezerakos (1985) ArticleTitleThe Northwest African depressions affecting the south Balkans. J Climatol 5 646–654
NG Prezerakos (1990) ArticleTitleSynoptic flow patterns leading to the generation of Northwest African depressions. Int J Climatol 10 33–48
NG Prezerakos EA Flocas (1996) ArticleTitleThe formation of a dynamically unstable ridge at 500 hPa in north-west Europe as a precursor of surface cyclogenesis in central Mediterranean. Meteorol Appl 3 101–111
NG Prezerakos HA Flocas (2002) ArticleTitleRegional and global large scale dynamics leading to a prolonged drought event in Greece. J Atmos Solar Terrestr Phys 64 1841–1854
NG Prezerakos SC Michaelides AS Vlassi (1990) ArticleTitleAtmospheric synoptic conditions associated with the initiation of north-west African depressions. Int J Climatol 10 711–729
NG Prezerakos HA Flocas SC Michaelides (1999) ArticleTitleUpper tropospheric downstream development over northwest Europe leading to surface cyclogenesis in the central Mediterranean. Meteorol Appl 4 313–322
F Sanders JK Gyakum (1980) ArticleTitleSynoptic-dynamic climatology of the “Bomb”. Mon Wea Rev 108 1589–1606
JS Sawyer (1956) ArticleTitleThe vertical circulation at meteorological fronts and its relation to frontogenesis. Proc R Soc A 234 246–262
El-Y Shay P Alpert (1991) ArticleTitleA diagnostic study of winter diabatic heating in the Mediterranean in relation to cyclones. Q J R Met Soc 117 715–747
CD Thorncroft HA Flocas (1997) ArticleTitleA case study of Saharan cyclogenesis. Mon Wea Rev 125 1147–1165
IF Triggo GR Bigg TD Davies (2002) ArticleTitleClimatology of cyclogenesis mechanisms in the Mediterranean. Mon Wea Rev 130 197–211
M Tsidulko SO Krichak P Alpert O Kakaliagou G Kallos A Papadopoulos (2002) ArticleTitleNumerical study of a very intensive eastern Mediterranean dust storm, 13–16 March 1998. J Geoph Res 107 IssueIDD21 4581 Occurrence Handle10.1029/2001JD001168
LW Uccellini PJ Kocin (1987) ArticleTitleThe interaction of jet streak circulations during heavy snow events along the east coast of the United States. Wea Forecast 2 289–308
LF Whitney (1977) ArticleTitleRelationship of the subtropical jet stream to severe local storms. Mon Wea Rev 105 398–412
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Prezerakos, N., Flocas, H. & Brikas, D. The role of the interaction between polar and subtropical jet in a case of depression rejuvenation over the Eastern Mediterranean. Meteorol. Atmos. Phys. 92, 139–151 (2006). https://doi.org/10.1007/s00703-005-0142-y
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DOI: https://doi.org/10.1007/s00703-005-0142-y