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A case study of a severe Adriatic bora on 28 December 1992 (CROSBI ID 100272)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Ivančan-Picek, Branka ; Tutiš, Vlasta A case study of a severe Adriatic bora on 28 December 1992 // Tellus. Series A, Dynamic meteorology and oceanography, 48 (1996), 3; 357-367. doi: 10.3402/tellusa.v48i3.12065

Podaci o odgovornosti

Ivančan-Picek, Branka ; Tutiš, Vlasta

engleski

A case study of a severe Adriatic bora on 28 December 1992

Most bora research, until now, considered the appearance of the severe bora only on the northern Adriatic. However, the important topic of this paper is the internationally less known southern Adriatic bora. Preliminary results, including ours, begin to change the traditional view of bora as a local small-scale phenomenon by suggesting that bora-related airflow has a multiscale nature. Here, we present a rare synoptic situation which was characterised by the strong NE flow through the entire depth of the troposphere, which could be responsible for the appearance of the unusually severe wind over the continental part of Croatia and the bora on the southern Adriatic at 27/29 Decmber 1992. The results of isentropic diagnostics show that the southern Adriatic bora mechanism could not be explained by 2-D hydraulic theory with simpler upstream conditions as was mainly the case on the northern Adriatic. The downstream effects, due to the isallobaric component of the ageostrophic motion, play an essential role in the southern Adriatic bora genesis. This does not diminish the importance of upstream effects on the bora flow. From the theoretical approach, it is considered that upstream conditions for the southern Adriatic bora should be based on 3-D theories and numerical simulation which could explain the flow splitting, divergence and steep lowering of isentropic surfaces.

severe bora ; hydraulic theory ; isallobaric wind ; low-level jet ; isentropic diagnostic

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Podaci o izdanju

48 (3)

1996.

357-367

objavljeno

0280-6495

1600-0870

10.3402/tellusa.v48i3.12065

Povezanost rada

Geologija

Poveznice
Indeksiranost