Naslov
Advancements in understanding the meso- and micro- scale bora wind properties

Autori
Grisogono, Branko ; Belušić, Danijel ; Žagar, Mark

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, znanstveni

Skup
International Mini-Conference "Heat, mass and momentum transfer in katabatic winds over glaciers and ice sheets : towards a better formulation of the lower boundary condition in climate models"

Mjesto i datum
Utrecht, Nizozemska, 14.01.2008. - 17.01.2008

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
pulsations; rotors; Coriolis effects; air-sea interaction
(pulsations; rotors; Coriolis effects; air-sea interaction;)

Sažetak
A gusty downslope windstorm blowing at the eastern Adriatic coast is named bora. Related hourly mean wind speeds surpassing 20 m/s, with gusts reaching up to 50 or even 70 m/s, in the coastal mountain lee areas are typical (hurricane speeds). Substantial prospects in bora observations and measurements, understanding, modeling and its more detailed prediction during the last ~25 years will be discussed. It was generally thought before that bora was a falling, mostly thermodynamically driven wind ; however, bora is governed by mountain-wave breaking. The overall prospect mentioned would not be feasible without airborne data, nonlinear theory and advancements in computational techniques, especially mesoscale numerical models. However, the role of the boundary layer and waves in the upwind side in the bora evolution and the consequent lee-side flow structures are not understood adequately ; similarly, dynamical switches between weak-to- moderate to strong-to-severe bora flows and vice versa are understood inadequately.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

Napomena
Projekt NATO-DMI ; BORA (119-1193086-1311) ; Autor je pozvan da izloži sadašnje spoznaje o zavjetrinskim olujama, posebice olujnom vjetru buri, pripadnoj mezoskalnoj i mikroskalnoj strukturi strujanja. Predavanje je također rezultiralo pozvanim preglednim člankom u 'Tellus A', siječanj 2009. (http://bib.irb.hr/prikazi-rad?&rad=365902)

POVEZANOST RADA