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Turbulence averaging scale for bora flows at the NE Adriatic coast (CROSBI ID 598856)

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

Večenaj, Željko ; Belušić, Danijel ; Grisogono, Branko Turbulence averaging scale for bora flows at the NE Adriatic coast. 2013

Podaci o odgovornosti

Večenaj, Željko ; Belušić, Danijel ; Grisogono, Branko

engleski

Turbulence averaging scale for bora flows at the NE Adriatic coast

At the Eastern Adriatic coast often blows a downslope windstorm called bora. It flows from the north-eastern (NE) quadrant, and it occurs most frequently during winter seasons. Bora mean wind speed can surpass 20 m s-1 and due to its gustiness it occasionally reaches speeds greater than 60 m s-1. During such events, the turbulence is strongly developed in the lee of the mountains ; moreover, sub-mesocale and turbulent structures are additionally complicated at the middle of the NE Adriatic coast due to the upwind and surrounding mountains. In order to investigate turbulence, a suitable time/space averaging scale has to be deployed in order to define turbulent perturbations ; these quantities later on characterize turbulent kinetic energy, gustiness, etc. This study addresses the turbulence averaging scale for bora events recorded by the Gill WindMaster ultrasonic anemometers in the town of Senj (44.99°N, 14.90°E, 2 m above MSL), 13 m above the ground, in the period from March 2004 to June 2006, and Vratnik Pass (44.98°N, 14.98°E, 700 m above MSL), 10 m above the ground in the period from October 2004 to September 2005. Bora events extracted from these periods at both sites are categorized by duration and mean wind speed, which can provide some specific conclusions about the turbulence averaging scale for bora flows.

Bora flows; NE Adriatic; Turbulence scale

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Podaci o prilogu

2013.

objavljeno

Podaci o matičnoj publikaciji

Podaci o skupu

Davos Atmosphere and Cryosphere Assembly DACA-13

predavanje

08.07.2013-12.07.2013

Davos, Švicarska

Povezanost rada

Geologija