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Two length-scales for inclined stable boundary layers (CROSBI ID 542274)

Prilog sa skupa u časopisu | sažetak izlaganja sa skupa | međunarodna recenzija

Grisogono, Branko ; Belušic, Danijel Two length-scales for inclined stable boundary layers // Hrvatski meteorološki časopis. 2008. str. 43-43

Podaci o odgovornosti

Grisogono, Branko ; Belušic, Danijel

engleski

Two length-scales for inclined stable boundary layers

We improve 2 characteristic length-scales: Monin- Obukhov length and the "z-less" mixing length- scale for parameterization of turbulent processes in stable atmospheric boundary layers (SABL) over sloped surfaces. Since SABL structures are far from being understood properly today, their parameterizations or explicit treatment are still usually very sketchy in most mesoscale and climate models as well as in related transport and dispersion models. Typically an over-diffusion through the SABL occurs in most of numerical models. With the "z-less" mixing length-scale proposed here the overdiffusion is absent. Moreover, the mesoscale model used, MIUU model, gave results similar to those from an improved Prandtl model, i.e. katabatic flow occupying the lower and more active part of the SABL developed in both models. The corresponding low-level jet occurring in the strong near-surface inversion appears similar in both models. Certain details vary simply because of very different nature of the models deployed. The results could be used in different types of numerical modeling, parameterizations of the SABL, air-pollution transport and dispersion and further development of analytical models and data interpretation.

atmospheric turbulence; MIUU model; numerical modeling; Monin-Obukhov length; Prandtl model;

Prethodno prijavljeni naslov rada djelomice je drugaciji od onog sto je stvarno prezentirano i diskutirano na konferenciji (prosirenije).

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Podaci o prilogu

43-43.

2008.

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objavljeno

Podaci o matičnoj publikaciji

Hrvatski meteorološki časopis

Zagreb: Hrvatsko meteorološko društvo (HMD)

1330-0083

Podaci o skupu

International Conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes (12 ; 2008)

pozvano predavanje

06.10.2008-09.10.2008

Cavtat, Hrvatska

Povezanost rada

Geologija

Poveznice
Indeksiranost