| 2020年成都双流机场系统性雷暴天气特征 |
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| 引用本文： | 赵润华. 2020年成都双流机场系统性雷暴天气特征[J]. 高原山地气象研究, 2022, 42(4): 82-87. DOI: 10.3969/j.issn.1674-2184.2022.04.011 |
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| 作者姓名： | 赵润华 |
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| 作者单位： | 民航西南空管局气象中心, 成都 610202 |
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| 摘 要： | 利用2020年成都双流机场雷暴实况与航班运行数据，分析大面积航班延误响应机制（Massive Delay Response System，MDRS）下的系统性雷暴特征。结果表明：2020年成都双流机场启动MDRS响应共21次，黄色和橙色响应分别为17次和4次。MDRS响应下的大气环境具有显著的高湿高能特征，黄色和橙色雷暴天气过程中850 hPa比湿分别为16.23 g·kg−1和17.59 g·kg−1，K指数分别为35.8℃和36.9℃。MDRS黄色响应下，成都双流机场常发生3 h以下的间断性雷暴，高空槽从四川盆地北部延伸至中部，副高位置偏东南，雷暴云团呈现带状或块状分布，35 dBZ以上的雷达强回波区小于终端区面积的1/2，移动方向多为偏东和偏北向。MDRS橙色响应下，双流机场雷暴通常在3 h以上，大气环流具有更显著的涡旋结构，高空槽从四川盆地中部延伸至南部，偏南气流较强，副高位置偏东，雷暴云团具有明显的连续长带状分布特征，强回波区覆盖面积大于终端区的1/2，系统持续时间长，移动速度慢。
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| 关 键 词： | 雷暴 双流机场 大面积航班延误 |
| 收稿时间： | 2021-06-19 |
Analysis on Characteristics of Systematic Thunderstorm Weather in Chengdu Shuangliu Airport in 2020 |
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| ZHAO Runhua. Analysis on Characteristics of Systematic Thunderstorm Weather in Chengdu Shuangliu Airport in 2020[J]. Plateau and Mountain Meteorology Research, 2022, 42(4): 82-87. DOI: 10.3969/j.issn.1674-2184.2022.04.011 |
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| Authors: | ZHAO Runhua |
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| Affiliation: | Meteorological Center of CAAC Southwest Air Traffic Control Bureau, Chengdu 610202, China |
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| Abstract: | Based on thunderstorm data and flight operation data of Chengdu Shuangliu Airport in 2020, the characteristics of systematic thunderstorms under the Massive Delay Response System (MDRS) are analyzed. The results show that: Chengdu Shuangliu Airport launched 21 MDRS responses in 2020, with 17 yellow and 4 orange responses. The atmospheric environment under MDRS response was characterized by high humidity and high energy. The specific humidity at 850 hPa in yellow and orange thunderstorms were 16.23 g · kg?1 and 17.59 g · kg?1, respectively, and the K index were 35.8 ℃ and 36.9 ℃, respectively. Under the yellow response, intermittent thunderstorms occurred in Chengdu Shuangliu Airport for less than 3 hours; the upper trough extended from the northern part of the Sichuan Basin to the central part, and the subtropical high was located southeastward; the thunderstorm clouds were distributed in bands or blocks; the strong echo area of radar above 35 dBZ was less than 1/2 of the terminal area, and the moving direction was mostly eastward and northward. Under the orange response, thunderstorms were usually more than 3 hours, and the atmospheric circulation had a more significant vortex structure; the upper trough extended from the central part of the Sichuan Basin to the south, with strong southerly airflow, and the subtropical high was located eastward; the thunderstorm cloud cluster was characterized by continuous and long zonal distribution; the coverage area of the strong echo area was greater than 1/2 of the terminal area, and the system lasted for a long time and moved slowly. |
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