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Orographic Influence on Adriatic Vortex Generation

Orographic Influence on Adriatic Vortex Generation. Branka Ivančan-Picek and Vesna Jurčec Meteorological and Hydrological Service Zagreb, Croatia e-mail: picek@cirus.dhz.hr. ICAM/MAP2003, BRIG, 18 - 23 May 2003. Subject:. cyclonic vortex genesis in the wind field. Purpose:.

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Orographic Influence on Adriatic Vortex Generation

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  1. Orographic Influence on Adriatic Vortex Generation Branka Ivančan-Picek and Vesna Jurčec Meteorological and Hydrological Service Zagreb, Croatia e-mail: picek@cirus.dhz.hr ICAM/MAP2003, BRIG, 18 - 23 May 2003

  2. Subject: cyclonic vortex genesis in thewind field Purpose: is to link the Alpine mesoscale wind characteristics to the vortex appearance following an intensive local-scale convective process during MAP IOP5 Gomis et al. (1990)- Meteor.Atmos.Phys. Jurčec et al. (1996)-Meteorologische Zeitschrift Ivančan-Picek and Tutiš (1996)- Tellus Brzović (1999)- Contr.Atmos.Phys. Ivančan-Picek et al. (2003) - Meteorologische Zeitschrift ICAM/MAP2003, BRIG, 18 - 23 May 2003

  3. Adriatic vortex and wind characteristics: BURA 200 km JUGO ICAM/MAP2003, BRIG, 18 - 23 May 2003

  4. Scale separation technique: Maddox (1980); Gomis et al. (1990); Jurčec et al. (1996); Ivančan-Picek (1998); F1 and F2 are for low-pass filters usedto define the bandpass (mesoscale) filter BR. F2 also defines the macroscale field. ICAM/MAP2003, BRIG, 18 - 23 May 2003

  5. Data: all available data in the Adriatic coast and islands in addition to ordinary synoptic data ICAM/MAP2003, BRIG, 18 - 23 May 2003

  6. ICAM/MAP2003, BRIG, 18 - 23 May 2003

  7. ICAM/MAP2003, BRIG, 18 - 23 May 2003

  8. Focus: On the identification of mesoscale vortices in the high-resolution ALADIN model wind field MAP IOP5 ICAM/MAP2003, BRIG, 18 - 23 May 2003

  9. IOP5, 4 Oct 00 + ICAM/MAP2003, BRIG, 18 - 23 May 2003

  10. IOP5, 4 Oct 00 + ICAM/MAP2003, BRIG, 18 - 23 May 2003

  11. Conclusions: Orographic influence on vortex generation comes from the mountain effect on the wind field - particularly on intensity and duration of Adriatic local windsbura and jugo The three main currents over Alpine region are responsible for vortex generation: large scale flow - over eastern and western side of the Alps mesoscale cross-Alpine flow confined to valley transverse sections toward the Genoa bay ICAM/MAP2003, BRIG, 18 - 23 May 2003

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