Naslov
On the turbulence integral scales for the bora flows at the NE Adriatic coast

Autori
Večenaj, Željko ; Belušić, Danijel ; Grisogono, Branko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Skup
ICAM 2013 - International Conference on Alpine Meteorology

Mjesto i datum
Kranjska Gora, Slovenija, 03.06.2013. - 07.06.2013

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Bora flows; Adriatic Sea; Integral scales

Sažetak
Single point 3D high frequency wind measurements were conducted at the north-eastern Adriatic coast in the town of Senj (44.99°N, 14.90°E, 2 m above MSL, 13 m above the ground, March 2004 – June 2006), and Vratnik Pass (44.98°N, 14.98°E, 700 m above MSL, 10 m above the ground, Oct. 2004 – Sep. 2005), using WindMaster ultrasonic anemometers (Gill Instruments). These instruments recorded the data with a sampling frequency of 4 Hz. They were continuously operational for more than two years in Senj and almost a year in Vratnik Pass, recording all kinds of airflows. Using these data sets, we have a great opportunity to investigate turbulence characteristics of the local wind in this region. We estimate turbulent kinetic energy and its dissipation rate for bora events in both Senj and Vratnik Pass between the coastal mountains. Using these estimations, we estimate integral turbulence length scale and integral turbulence time scale (a total eddy lifetime) through the turbulence closure techniques. The relationships between these scales and turbulence dissipation scales are investigated and compared with the relationships already reported in the literature. Among other reasons, these quantities are important for numerical model evaluations and turbulence parameterization scheme improvements.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

POVEZANOST RADA