Geofizika, Vol. 14 No. 1, 1997.
Izvorni znanstveni članak
Numerical simulation of the Adriatic cyclone development
N. Brzović
V. Jurčec
Sažetak
This paper represents the first attempt to simulate the influence of the Dinaric Alps on the Adriatic cyclone using a high resolution hydrostatic model ALADIN. The reference experiment and two sensitivity studies are carried out to study the orography and diabatic effects on the cyclone development and maintenance. Verification confirms that the appearance of “twin cyclones” on either side of the Apennine peninsula is a realistic feature. The influence of Dinaric Alps is visible in a high-low couplet over the orography and strong winds behind the cyclone and along the coast. In the absence of the Dinaric Alps the cyclone is not bounded to this orography and the low pressure field quickly spreads over the entire Balkan peninsula and weakens. The absence of latent heat release leads to the weaker cyclonic circulation. An intercomparison of three experiments shows that the orographically induced pressure gradients, and not the pressure itself, are essential for the cyclone maintenance. These experiments have shown that the Adriatic cyclone is mainly induced by the Alpine orography whereas the Dinaric Alps through upstream blocking influence the subsynoptic processes over the Adriatic area.
Ključne riječi
Numerical simulation; cyclone development; Adriatic cyclone; influence of orography
Hrčak ID:
17776
URI
Datum izdavanja:
1.12.1997.
Posjeta: 1.054 *