| 基于HYSPLIT模式的济南机场一次暴雨过程的水汽输送特征分析 |
| |
| 引用本文： | 任伟,任燕,李兰兰.基于HYSPLIT模式的济南机场一次暴雨过程的水汽输送特征分析[J].山东气象,2019,39(1):116-122. |
| |
| 作者姓名： | 任伟 任燕 李兰兰 |
| |
| 作者单位： | （1.民航山东空管分局气象台，山东 济南 250107；2.山东省气象局大气探测技术保障中心，山东 济南 250031；3.山东省气象服务中心，山东 济南 250031） |
| |
| 基金项目： | 山东省气象局科研项目（SDYBY2017-03） |
| |
| 摘 要： | 利用NCEP再分析资料，结合HYSPLIT轨迹模式对 2018年6月25日发生在济南遥墙国际机场的一次大暴雨过程的水汽条件及输送过程进行分析。结果表明：此次大暴雨的水汽输送通道主要有3支，一支是源自对流层中层的西北气流输送，另一支是西太平洋上副热带高压边缘东南气流输送，第三支是南海上空向北的气流输送，三支通道中，西太平洋通道和南海通道对暴雨的水汽贡献最大，分别为46%和42%，来自西北通道的水汽输送相对较少，它对暴雨的水汽贡献仅为12%；进一步的分析表明，在850 hPa以下的对流层底部，来自西太平洋通道的水汽输送占据主导地位，而在700 hPa以上的对流层中层，则是来自南海通道的水汽输送占据主导地位。
|
| 关 键 词： | 暴雨 水汽通量 拉格朗日轨迹 水汽贡献 |
Analysis of water vapor transport characteristics during a torrential rain at Jinan Airport based on the HYSPLIT model |
| |
| REN Wei,REN Yan,LI Lanlan.Analysis of water vapor transport characteristics during a torrential rain at Jinan Airport based on the HYSPLIT model[J].Journal of Shandong Meteorology,2019,39(1):116-122. |
| |
| Authors: | REN Wei REN Yan LI Lanlan |
| |
| Institution: | (1. Meteorological Observatory of Shandong Air Traffic Management Sub-bureau CAAC, Jinan 250107, China; 2. Atmospheric Sounding and Technical Support Center of Shandong Meteorological Bureau, Jinan 250031, China; 3. Shandong Provincial Meteorological Service Center, Jinan 250031, China) |
| |
| Abstract: | Using NCEP reanalysis data and the HYSPLIT model, the water vapor transport characteristics during a torrential rain on 25 June 2018 at Jinan Yaoqiang International Airport are analyzed. The results show that there are three major water vapor channels for this torrential rain. One is the northwestern air flow in the middle troposphere, another is the southeastern air flow near the western Pacific subtropical high, and the other is the northward air flow from the South China Sea. The water vapor mainly comes from the western Pacific and the South China Sea, and the contribution rate to the torrential rain is 46% and 42%, respectively. The water vapor from the northwestern channel is less, and its contribution rate is only 12%. Further analysis indicates that the water vapor transport by the western Pacific channel dominates at the bottom of the troposphere below 850 hPa, while the water vapor transport by the South China Sea channel dominates in the middle troposphere above 700 hPa. |
| |
| Keywords: | torrential rain water vapor flux Lagrange trajectory model contribution rate of water vapor |
|
| 点击此处可从《山东气象》浏览原始摘要信息 |
| 点击此处可从《山东气象》下载免费的PDF全文 |
