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| Citation: | Hon Kaikwong, Chan Pakwai. Aircraft Wake Vortex Observations in Hong Kong[J]. Journal of Radars, 2017, 6(6): 709-718. doi: 10.12000/JR17072
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Abstract
The Hong Kong International Airport (HKIA) is among the busiest airports in the world, with total aircraft movement exceeding 400,000 in 2016. The Hong Kong Observatory (HKO), provider of aviation meteorological services to HKIA, has recently begun making the first sets of aircraft wake vortex observations at HKIA using short-range LIDARs. This paper briefly describes the preliminary observation results obtained from field measurements between 2014 and 2016, and discusses the way forward on the monitoring and prediction of wake vortex behaviour in Hong Kong. -
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References
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- Figure 1. Schematic diagram of the terrain (contoured at 100 m separation) and major meteorological instruments surrounding the Hong Kong International Airport
- Figure 2. The temporary unit of short-range LIDAR overlooking the arrival glide path of corridor 25RA at HKIA during the 2014 field campaign
- Figure 3. Scanning strategies employed during the short-range LIDAR field campaign in summer 2014
- Figure 4. Sample sequence of wake vortex evolution (highlighted) captured by a short-range LIDAR over 25RA during the 2014 field campaign
- Figure 5. Scatterplot of estimated advection speed of identified wake vortices during the 2014 field campaign (vertical axis) against background wind speed from a nearby anemometer (horizontal axis). Please refer to the main text for more detailed descriptions
- Figure 6. Scanning strategy employed for departure-corridor wake vortex observations during the SRL field campaign in 2015
- Figure 7. Sample snapshot of a pair of wake vortices (highlighted) observed over corridor 25LD during the SRL field campaign in 2015
- Figure 8. Sample normalised spectral intensities obtained from the permanent SRL unit of HKO during late 2016. The sharp jump near the middle of the plot corresponds to rough occurrence location of the observed wake vortices
- Figure 9. Sample sequence of short-range LIDAR fixed-elevation scans (3° elevation; each planar scan completed in 20–30 seconds) during a suspected case of low-level windshear encounter related to remnant wake vortices. The trailing arrival aircraft would report an encounter of significant low-level windshear