Naslov
Comparison of tower and LIDAR measurements during bora events at Dubrovnik Airport

Autori
Gabela Šeperić, Lada ; Večenaj, Željko ; Grisogono, Branko ; Jurković, Jadran

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

Skup
35th International Conference on Alpine Meteorology (ICAM)

Mjesto i datum
Riva del Garda, Italija, 02.09.2019. - 06.09.2019

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
lidar, Dubrovnik, turbulence

Sažetak
Bora is a very strong gusty north-eastern wind that causes significant difficulties in the processes of taking off and landing of aircraft at Dubrovnik airport (LDDU). Its natural nonhomogeneous wind speed field makes it very hard to measure and forecast turbulence during the bora event. Therefore, it is of essential importance to map, as well as possible, the spatial and temporal features of bora wind speed, gusts and turbulence in the horizontal and vertical vicinity of the LDDU runway. For this purpose, within the SESAR 2020 programme (solution PJ.04-02), in the period from 14 December 2017 to 14 April 2018, a WINCUBE400S-AT LIDAR and ultrasonic anemometer were installed in the vicinity of LDDU. Volume, Plan Position Indicator (PPI) and Range Height Indicator (RHI) scans from the LIDAR and three wind speed components from the anemometer, as two sets of measurements, were performed to provide as much data as possible to measure the structure of the mean airflow and turbulence. During the above mentioned period, 14 episodes of bora were detected. This study shows a comparison for several different episodes between measurements performed by the LIDAR and the ultrasonic anemometer. In order to have comparable sets of data to determine and compare turbulence kinetic energy (TKE) from both instruments, special LIDAR scans were made aimed at the anemometer tower. We expect to find a correlation between the TKE’s obtained from the anemometer and the LIDAR, which will allow us to obtain a fine spatio-temporal structure of turbulence at LDDU.

Izvorni jezik
Engleski

Znanstvena područja
Geofizika

POVEZANOST RADA