Observation and numerical simulation of terrain-induced airflow leading to low level windshear at the Hong Kong International Airport based on Range-Height-Indicator scans of a LIDAR
A Doppler Light Detection And Ranging (LIDAR) system is set up downstream of a small hill of Lantau Island near the Hong Kong International Airport to perform range-height-indicator (RHI) scans to monitor airflow disturbances by the terrain in a tropical cyclone case and to study the feasibility of...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Borntraeger
2024-07-01
|
| Series: | Meteorologische Zeitschrift |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1127/metz/2024/1221 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846099383966236672 |
|---|---|
| author | Pak Wai Chan P. Cheung K. K. Lai |
| author_facet | Pak Wai Chan P. Cheung K. K. Lai |
| author_sort | Pak Wai Chan |
| collection | DOAJ |
| description | A Doppler Light Detection And Ranging (LIDAR) system is set up downstream of a small hill of Lantau Island near the Hong Kong International Airport to perform range-height-indicator (RHI) scans to monitor airflow disturbances by the terrain in a tropical cyclone case and to study the feasibility of alerting the low level windshear to be encountered by the aircraft leaving the airport. This is the first time that RHI scans are performed regularly downstream of the small hill. The scans show many interesting features of terrain-disrupted airflow, including tiny vortex of reverse flow and higher-speed wind streaks. The latter are found to be associated with the low level windshear reported by the pilots. The airflow features are simulated using a high resolution numerical weather prediction model. It turns out that the higher-speed wind streaks could be reproduced successfully. However, the reverse flow does not show up well in the simulation. |
| format | Article |
| id | doaj-art-0cbbe6d10ee44ca2b1210b1e8e3dc28c |
| institution | Kabale University |
| issn | 0941-2948 |
| language | English |
| publishDate | 2024-07-01 |
| publisher | Borntraeger |
| record_format | Article |
| series | Meteorologische Zeitschrift |
| spelling | doaj-art-0cbbe6d10ee44ca2b1210b1e8e3dc28c2024-12-31T14:50:45ZengBorntraegerMeteorologische Zeitschrift0941-29482024-07-0133310.1127/metz/2024/1221105311Observation and numerical simulation of terrain-induced airflow leading to low level windshear at the Hong Kong International Airport based on Range-Height-Indicator scans of a LIDARPak Wai ChanP. CheungK. K. LaiA Doppler Light Detection And Ranging (LIDAR) system is set up downstream of a small hill of Lantau Island near the Hong Kong International Airport to perform range-height-indicator (RHI) scans to monitor airflow disturbances by the terrain in a tropical cyclone case and to study the feasibility of alerting the low level windshear to be encountered by the aircraft leaving the airport. This is the first time that RHI scans are performed regularly downstream of the small hill. The scans show many interesting features of terrain-disrupted airflow, including tiny vortex of reverse flow and higher-speed wind streaks. The latter are found to be associated with the low level windshear reported by the pilots. The airflow features are simulated using a high resolution numerical weather prediction model. It turns out that the higher-speed wind streaks could be reproduced successfully. However, the reverse flow does not show up well in the simulation.http://dx.doi.org/10.1127/metz/2024/1221windshearterrain-disrupted airflowrange-height-indicator (rhi)lidarhong kong international airport |
| spellingShingle | Pak Wai Chan P. Cheung K. K. Lai Observation and numerical simulation of terrain-induced airflow leading to low level windshear at the Hong Kong International Airport based on Range-Height-Indicator scans of a LIDAR Meteorologische Zeitschrift windshear terrain-disrupted airflow range-height-indicator (rhi) lidar hong kong international airport |
| title | Observation and numerical simulation of terrain-induced airflow leading to low level windshear at the Hong Kong International Airport based on Range-Height-Indicator scans of a LIDAR |
| title_full | Observation and numerical simulation of terrain-induced airflow leading to low level windshear at the Hong Kong International Airport based on Range-Height-Indicator scans of a LIDAR |
| title_fullStr | Observation and numerical simulation of terrain-induced airflow leading to low level windshear at the Hong Kong International Airport based on Range-Height-Indicator scans of a LIDAR |
| title_full_unstemmed | Observation and numerical simulation of terrain-induced airflow leading to low level windshear at the Hong Kong International Airport based on Range-Height-Indicator scans of a LIDAR |
| title_short | Observation and numerical simulation of terrain-induced airflow leading to low level windshear at the Hong Kong International Airport based on Range-Height-Indicator scans of a LIDAR |
| title_sort | observation and numerical simulation of terrain induced airflow leading to low level windshear at the hong kong international airport based on range height indicator scans of a lidar |
| topic | windshear terrain-disrupted airflow range-height-indicator (rhi) lidar hong kong international airport |
| url | http://dx.doi.org/10.1127/metz/2024/1221 |
| work_keys_str_mv | AT pakwaichan observationandnumericalsimulationofterraininducedairflowleadingtolowlevelwindshearatthehongkonginternationalairportbasedonrangeheightindicatorscansofalidar AT pcheung observationandnumericalsimulationofterraininducedairflowleadingtolowlevelwindshearatthehongkonginternationalairportbasedonrangeheightindicatorscansofalidar AT kklai observationandnumericalsimulationofterraininducedairflowleadingtolowlevelwindshearatthehongkonginternationalairportbasedonrangeheightindicatorscansofalidar |