| 基于多源数据的“利奇马”台风大气环流、云及降水特征分析 |
| |
| 引用本文： | 余茁夫,马烁,胡雄,严卫.基于多源数据的“利奇马”台风大气环流、云及降水特征分析[J].气象科学,2020,40(1):41-52. |
| |
| 作者姓名： | 余茁夫 马烁 胡雄 严卫 |
| |
| 作者单位： | 国防科技大学 气象海洋学院, 南京 211101,国防科技大学 气象海洋学院, 南京 211101,国防科技大学 气象海洋学院, 南京 211101,国防科技大学 气象海洋学院, 南京 211101 |
| |
| 基金项目： | 湖南省自然科学基金资助项目（2019JJ50719）；国防科技大学科研计划项目（ZK17-03-51） |
| |
| 摘 要： | 利用NCEP/NCAR再分析资料、FY-4A静止卫星资料对“利奇马”生命过程的大气环流特征、云宏观特征进行了分析。针对“利奇马”超强台风期间的一次降水过程,利用GPM卫星的双频降水雷达(Dual-frequency Precipitation Radar,DPR)资料对其进行了宏微观特征分析。结果表明:在“利奇马”生命过程中,西太平洋副热带高压、40°N以北的高空槽脊、(35°N,80°E)的高压以及“罗莎”台风对“利奇马”的发展、移动均产生了重要的影响;其云系分布先后表现为螺旋状、逗点状、中心对称结构以及不规则形状,其南北两侧的云区范围、云顶高度也不断变化;在“利奇马”超强台风期间的一次降水过程中,近地表降水率大致呈环状分布,降水粒子浓度以及降水粒子半径的南北分布与东西分布相差较大,除了云墙降水为对流降水外,其他部分的降水以层云降水为主,层云降水对应的雨顶高度在4.5~12 km,主要集中在5.5~10 km;对流降水对应的雨顶高度在1~12 km,主要集中在2~5 km和6~11 km。
|
| 关 键 词： | “利奇马”台风 FY-4A静止卫星 GPM卫星 云特征 降水 |
| 收稿时间： | 2019/9/17 0:00:00 |
| 修稿时间： | 2019/10/15 0:00:00 |
Analysis of atmospheric circulation,cloud and precipitation characteristics of typhoon “Lekima”based on multi-source data |
| |
| YU Zhuofu,MA Shuo,HU Xiong and YAN Wei.Analysis of atmospheric circulation,cloud and precipitation characteristics of typhoon “Lekima”based on multi-source data[J].Scientia Meteorologica Sinica,2020,40(1):41-52. |
| |
| Authors: | YU Zhuofu MA Shuo HU Xiong and YAN Wei |
| |
| Institution: | College of Meteorology and Oceanography, National University of Denfense Technology, Nanjing 211101, China,College of Meteorology and Oceanography, National University of Denfense Technology, Nanjing 211101, China,College of Meteorology and Oceanography, National University of Denfense Technology, Nanjing 211101, China and College of Meteorology and Oceanography, National University of Denfense Technology, Nanjing 211101, China |
| |
| Abstract: | The NCEP reanalysis data and FY-4A geostationary satellite data are used to analyze the atmospheric circulation characteristics and cloud macroscopic characteristics of the typhoon "Lekima" throughout its life history. Based on the data from GPM satellite (Dual-frequency Precipitation Radar, DPR), the macro and micro characteristics of a precipitation process during typhoon "Lekima" are analyzed. The results show that the western Pacific subtropical high pressure, troughs and ridges on high altitude in the north of 40°N, high-pressure located in (35°N, 80°E) and the typhoon "Krosa" have all exerted important impacts on development and movement of typhoon "Lekima" during its life process. The distribution of the cloud successively performs as spiral, comma, central symmetrical structure and irregular shape, and the cloud area and cloud top height on the north and south sides are constantly changing. In a precipitation process during typhoon "Lekima", the near-surface precipitation rate is roughly annular, and the north-south distribution of precipitation particle concentration and precipitation particle radius is quite different from the east-west distribution. Except that the cloud wall precipitation is convective precipitation, and other parts of the precipitation mainly are stratified precipitation. The storm top height corresponding to the stratus precipitation is 4.5-12 km, mainly concentrated at 5.5-10 km; the storm top height corresponding to convective precipitation is 1-12 km, mainly concentrated at 2-5 km and 6-11 km. |
| |
| Keywords: | typhoon“Lekima” FY-4A GPM cloud feature precipitation |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《气象科学》浏览原始摘要信息 |
| 点击此处可从《气象科学》下载免费的PDF全文 |
|
