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Pregled bibliografske jedinice broj: 318918

Modelling wind and temperature profiles in katabatic flow


Grisogono, Branko; Belušić, Danijel; Kavčič, Iva
Modelling wind and temperature profiles in katabatic flow // 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"
Utrecht, Nizozemska, 2008. (pozvano predavanje, nije recenziran, neobjavljeni rad, znanstveni)


Naslov
Modelling wind and temperature profiles in katabatic flow

Autori
Grisogono, Branko ; Belušić, Danijel ; Kavčič, Iva

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.-17.01.2008

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
MIUU model; Prandtl model; stratified turbulence; low-level jet; near-surface inversion.

Sažetak
Analytical and numerical modeling of simple katabatic flows blowing over long cool slopes is assessed. Since it was verified that classical scaling via Monin-Obukhov length performs over such slopes rather poorly (a low-level jet usually determines the surface fluxes), our improved Prandtl model is used instead. We specifically address a single problem: the mixing length-scale within the SABL, i.e. in the "z-less" or local regime, as often parameterized in mesoscale models with a higher-order closure turbulence scheme, and a way to improve this length-scale by including shear effects explicitly. The numerical meteorological model deployed is MIUU model ; it is improved via its mixing length-scale (in its turbulence parameterization scheme) by its tune up toward the improved Prandtl solutions. In this way, lower and more faithful low-level jets and near-surface inversion may be modeled.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

Napomena
Projekt NATO-DMI, BORA (119-1193086-1311) ; Autor je pozvan, kao međunarodni ekspert za stabilne atmosferske granične slojeve i posebice katabatičko strujanje, da održi predavanje i moderira predstojeći bilateralni znanstveni projekt između Nizozemske (IMAU) i Rusije. Projekt se odnosi na strujanje na Spitzbergu i ostalim polarnim otocima s planinama. To je rezultiralo kasnije npr. radom: http://bib.irb.hr/prikazi-rad?&rad=374344



POVEZANOST RADA


Projekt / tema
037-1193086-2771 - Numeričke metode u geofizičkim modelima (Saša Singer, )
119-1193086-1311 - Bazične ORografske Atmosferske cirkulacije u Hrvatskoj (BORA) (Branko Grisogono, )
119-1193086-1323 - Kakvoća zraka nad kompleksnom topografijom (Zvjezdana Bencetić-Klaić, )

Ustanove
Prirodoslovno-matematički fakultet, Zagreb