Overview of Low-Level Wind Shear Characteristics over Chinese Mainland
The characteristics of low-level wind shear (LLWS) over the Chinese mainland were investigated using reports from pilots, air traffic controllers and the number of arriving/departing flights from 2016 to 2020. A preliminary analysis of the impact of the flights on the LLWS reports was carried out, a...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-05-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/12/5/628 |
| _version_ | 1827692567495442432 |
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| author | Caiyan Lin Kaijun Zhang Xintao Chen Sheng Liang Junjie Wu Wei Zhang |
| author_facet | Caiyan Lin Kaijun Zhang Xintao Chen Sheng Liang Junjie Wu Wei Zhang |
| author_sort | Caiyan Lin |
| collection | DOAJ |
| description | The characteristics of low-level wind shear (LLWS) over the Chinese mainland were investigated using reports from pilots, air traffic controllers and the number of arriving/departing flights from 2016 to 2020. A preliminary analysis of the impact of the flights on the LLWS reports was carried out, and the cause of LLWS was also investigated. LLWS reports from most airports indicate that LLWS is most likely to occur within 600 m AGL with a higher density below 300 m, but with some exceptions, as wind shear is reported at higher altitudes at some airports. Airports with a high frequency of LLWS reports are almost all located in or around regions with complex topography and in regions with prevailing weather conditions favorable to LLWS. The variation in overall LLWS reports displays a steady increase from 2016 to 2019 and a decrease from 2019 to 2020, consistent with the trend in the number of flights, but with no evidently similar trends for individual airports. Seasonal variations in LLWS reports are observed and demonstrate no notable impact caused by the number of flights, implying that the main cause is the monthly variation of weather conditions. Diurnal variation is also evident and largely associated with the variation in number of flights during the busy period in addition to weather conditions, such as common strong winds, in the afternoon. |
| first_indexed | 2024-03-10T11:24:55Z |
| format | Article |
| id | doaj.art-7dd94285608d4baa88334103c708893d |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-10T11:24:55Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-7dd94285608d4baa88334103c708893d2023-11-21T19:44:54ZengMDPI AGAtmosphere2073-44332021-05-0112562810.3390/atmos12050628Overview of Low-Level Wind Shear Characteristics over Chinese MainlandCaiyan Lin0Kaijun Zhang1Xintao Chen2Sheng Liang3Junjie Wu4Wei Zhang5Aviation Meteorological Center, Air Traffic Management Bureau, Civil Aviation Administration of China, Beijing 100122, ChinaGansu Sub-Bureau of Northwest Air Traffic Management Bureau, Civil Aviation Administration of China, Lanzhou 730087, ChinaAviation Meteorological Center, Air Traffic Management Bureau, Civil Aviation Administration of China, Beijing 100122, ChinaAviation Meteorological Center, Air Traffic Management Bureau, Civil Aviation Administration of China, Beijing 100122, ChinaCollege of Air Traffic Management, Civil Aviation Flight University of China, Guanghan 618300, ChinaAviation Meteorological Center, Air Traffic Management Bureau, Civil Aviation Administration of China, Beijing 100122, ChinaThe characteristics of low-level wind shear (LLWS) over the Chinese mainland were investigated using reports from pilots, air traffic controllers and the number of arriving/departing flights from 2016 to 2020. A preliminary analysis of the impact of the flights on the LLWS reports was carried out, and the cause of LLWS was also investigated. LLWS reports from most airports indicate that LLWS is most likely to occur within 600 m AGL with a higher density below 300 m, but with some exceptions, as wind shear is reported at higher altitudes at some airports. Airports with a high frequency of LLWS reports are almost all located in or around regions with complex topography and in regions with prevailing weather conditions favorable to LLWS. The variation in overall LLWS reports displays a steady increase from 2016 to 2019 and a decrease from 2019 to 2020, consistent with the trend in the number of flights, but with no evidently similar trends for individual airports. Seasonal variations in LLWS reports are observed and demonstrate no notable impact caused by the number of flights, implying that the main cause is the monthly variation of weather conditions. Diurnal variation is also evident and largely associated with the variation in number of flights during the busy period in addition to weather conditions, such as common strong winds, in the afternoon.https://www.mdpi.com/2073-4433/12/5/628low-level wind shearhazardous weatherweather impact on aviation |
| spellingShingle | Caiyan Lin Kaijun Zhang Xintao Chen Sheng Liang Junjie Wu Wei Zhang Overview of Low-Level Wind Shear Characteristics over Chinese Mainland Atmosphere low-level wind shear hazardous weather weather impact on aviation |
| title | Overview of Low-Level Wind Shear Characteristics over Chinese Mainland |
| title_full | Overview of Low-Level Wind Shear Characteristics over Chinese Mainland |
| title_fullStr | Overview of Low-Level Wind Shear Characteristics over Chinese Mainland |
| title_full_unstemmed | Overview of Low-Level Wind Shear Characteristics over Chinese Mainland |
| title_short | Overview of Low-Level Wind Shear Characteristics over Chinese Mainland |
| title_sort | overview of low level wind shear characteristics over chinese mainland |
| topic | low-level wind shear hazardous weather weather impact on aviation |
| url | https://www.mdpi.com/2073-4433/12/5/628 |
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