当前位置:首页>南京>江苏空管分局气象台观测室开展南京禄口国际机场近五年初雷特征分析

江苏空管分局气象台观测室开展南京禄口国际机场近五年初雷特征分析

  • 2026-04-29 14:25:41
江苏空管分局气象台观测室开展南京禄口国际机场近五年初雷特征分析

南京禄口国际机场

近五年初雷特征分析

初雷,是指一年中的第一次雷暴。它标志着对流性天气活动的开端,预示着暖湿气流开始占据主导地位,大气层结逐渐趋于不稳定,同时也意味着雷雨季的序幕正式拉开。

一、分析目的

初雷天气既是冬春季节转换的标志,也是航空气象服务保障的难点问题,气象台观测室基于南京禄口国际机场2021-2025年气象观测数据,对近五年的初雷发生时间、持续时长、初雷前后气温变化和过程降水量进行统计分析,旨在进一步总结本场初雷特征,加强观测保障能力,提高预报观测协同工作水平,为将要到来的2026年初雷预报提供参考依据。

二、初雷发生的时空特征

01

发生时间

近五年来,南京禄口国际机场初雷发生日期波动较大,总体出现在2月中旬到4月上旬。2024年初雷时间最早,为2月18日。最晚出现在2023年4月3日,平均初雷日约为3月11日,与本场15年平均初雷日(3月13日)相比略偏早。

02

持续时长

近五年初雷发生时间主要为夜间至次日凌晨,集中在18时至次日10时,最早为18:17,最晚为10:41,持续时长均未超过1小时,平均时长为40.8分钟。

03

移动路径

结合雷达回波和观测记录,近五年初雷云团整体出现在本场西侧并自西向东移动,其中有四年初雷途径本场上空,大多在本场东侧消失,且本场北侧和南侧受初雷影响概率相当。

三、初雷类型

结合初雷发生时间,本场近五年初雷类型3月中旬前以斜压锋生为主,此时南京禄口国际机场处于初春阶段,冷暖空气势力相当,或以冷空气强势南下触发为主。3月中旬后以暖平流强迫为主,主要由于气温回升,西南暖湿气流逐渐增强,中低层以下的暖式切变线及江淮气旋等系统活动开始频繁。而3月中旬则暖平流强迫和斜压锋生型雷暴都有可能出现。

综合五年统计结果来看,初雷的生成类型与发生时间关系密切,3月中旬前需重点关注冷空气活动路径以及冷锋的发生发展,3月中旬后需要重点关注西南暖湿气流北抬的强度和影响范围。

四.初雷发生前后关键气象要素变化

01

气温变化

观测记录显示,初雷前,气温有明显回升,最高气温均在19℃以上。初雷后本场有明显降温,降温幅度波动较大,最大温差出现在2025年,为22.3℃,最低出现在2021年,仅为4.3℃,这与初雷发生时间与雷暴类型息息相关。斜压锋生型初雷天气过程(2022、2024和2025年)降温幅度较大,超过10℃;而暖平流强迫型(2023年)则降温幅度相对较小,小于10℃。

02

日降水量

同时,近五年初雷均伴有短时降水,日降水量同样具有较大波动。初雷最高日降水量出现在2022年,为28.4mm,最低出现在2024年,为1.9mm。结合雷暴前后温差显示分析,除2024年外,雷暴前后温差越大,其所蕴含的能量越强,所产生的降水量就越大。

03

风向风速

通过分析风向风速变化,发现2022、2023、和2025年初雷前后风向风速变化并无明显规律,均为弱小波动。2021年初雷发生前后风向有很大变化,从160°转变为330°。而2024年初雷发生前后风速出现较大突变,由3m/s增大至10m/s并伴随15m/s阵风。

五、特征总结

综上所述,南京禄口国际机场近五年初雷集中在初春的2月至4月,其中3月居多。平均时长为40.8分钟,整体移动路径自西向东。初雷类型大致以3月中旬为分界,3月中旬前以暖平流强迫型为主,3月中旬后以斜压锋生型为主。初雷发生前后风多呈现逆时针变化,风速减小,同时也存在少量风向或风速的较大变化的案例,这一特点与初雷类型和移动路径未呈现出明显关联。

通过对南京禄口国际机场近五年初雷天气的系统统计与实况复盘,可以更加清晰掌握本场初雷在出现时间、空间分布、要素变化等方面的典型规律。作为航空气象一线人员,预报员立足天气形势与多源数据,提前研判、精准预警,为航班调度与运行决策抢得先机;观测员严格值守、加密观测、详实记录,用精准数据支撑预报与保障落地。未来江苏空管分局气象台将继续以精准预报、精细观测、精心服务,守护禄口机场每一次航班安全顺畅。

策划丨江苏空管分局气象台

图文/编辑丨杨宇涵

审核丨李震寰

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  1. CONNECT:[ UseTime:0.000941s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001532s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000703s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000636s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001321s ]
  6. SELECT * FROM `set` [ RunTime:0.000601s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001730s ]
  8. SELECT * FROM `article` WHERE `id` = 492502 LIMIT 1 [ RunTime:0.001295s ]
  9. UPDATE `article` SET `lasttime` = 1777644829 WHERE `id` = 492502 [ RunTime:0.001364s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000576s ]
  11. SELECT * FROM `article` WHERE `id` < 492502 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001111s ]
  12. SELECT * FROM `article` WHERE `id` > 492502 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001139s ]
  13. SELECT * FROM `article` WHERE `id` < 492502 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002098s ]
  14. SELECT * FROM `article` WHERE `id` < 492502 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001724s ]
  15. SELECT * FROM `article` WHERE `id` < 492502 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002272s ]
0.181186s