[1]王芬,孙旭东,杨溢,等.黔西南暴雨多时间尺度特征及其天气学成因分析[J].气象研究与应用,2015,36(02):15-20.
　WANG Fen,SUN Xudong,YNAG Yi,et al.Climate characteristics of Rainstorm in multi-time scale and Analysis of the weather causes over southwestern Guizhou[J].Journal of Meteorological Research and Application,2015,36(02):15-20.
点击复制

黔西南暴雨多时间尺度特征及其天气学成因分析()
分享到：

气象研究与应用[ISSN:1673-8411/CN:45-1356/P]

卷:
第36卷
期数:
2015年02期
页码:
15-20
栏目:
天气气候
出版日期:
2015-12-21

文章信息/Info

Title:
Climate characteristics of Rainstorm in multi-time scale and Analysis of the weather causes over southwestern Guizhou
作者:
王芬1; 2;  孙旭东1;  杨溢1;  黄琰1;  周仕鹏1
1. 贵州省黔西南州气象局, 贵州兴义 562400;
2. 贵州省山地气候与资源重点实验室, 贵阳 550002
Author(s):
WANG Fen1; 2;  SUN Xudong1;  YNAG Yi1;  HUANG Yan1;  ZHOU Shipeng1
1. Meteorological Office of Southwestern Guizhou, Xingyi 562400, China;
2. The Mountainous Climate and Resource Key Laboratories of Guizhou Province, Guiyang 550002, China
关键词:
暴雨; 多时间尺度; 天气学成因; 黔西南
Keywords:
Rainstorm; multi-time scale; the weather causes analysis; Southwestern of Guizhou
分类号:
P426
摘要:
利用黔西南州8个台站1984-2013年逐日降水资料及美国国家大气中心和环境预报中心(NCEP/NCAR)的第二套再分析逐月资料,分析了近30年黔西南暴雨事件的多时间尺度气候特征,探讨了暴雨异常发生时的大气环流背景。结果表明:黔西南近30年平均暴雨日数东西多中间少;暴雨日数具有下降趋势;2-12月黔西南均会出现暴雨,但主要出现在5-9月,6月暴雨日数达到峰值,有明显的单峰结构特征;MK突变检验及滑动t检验结果表明近30年黔西南暴雨日数不存在突变点。在暴雨偏多年,黔西南地区地面气压上升,有冷空气补充南下,500hPa等压面略有上升,空气柱厚度略增加,700hPa平均垂直速度为负值,低层存在上升气流,水汽通量散度为负值,水汽辐合有利于降水产生。在暴雨偏少年,黔西南地区地面气压偏少,500hPa等压面下降,700hPa平均垂直速度为正值,低层存在下沉气流,水汽通量散度为正值,水汽辐散不利于降水产生。
Abstract:
Based on the daily precipitation data from 8 stations in southwestern Guizhou and the second re-analysis data from NCEP/NCAR during 1984-2013, the climate characteristics of rainstorm in multitime scale were analyzed and the atmospheric circulation backgrounds of the abnormal rainstorm were discussed. The results are as follows:Nearly 30 years there were less rainstorm days in the middle southwestern Guizhou than in the east and west; the number of heavy rain days has a downward trend; There were rainstorms during Feb.-Dec. and mainly concentrated during May to Sep with the maximum in June, so the change of rainstorm with the time is to be obvious unimodal structure; M-K mutation test and t test show that there is no mutational point in rainstorm days nearly 30 years. In heavy rain year, with the ground pressure raising, cold air moving to south, 500hPa isobaric rising slightly, air column thickness slightly increased, 700hPa vertical velocity being negative, updraft existing in low-level and the vapor flux divergence being negative, water vapor convergence is advantageous to the precipitation. By contrast, in drought year, with the ground pressure reducing, 500hPa isobaric falling slightly, vertical velocity at 700hPa being positive, sinking airflow existing in lower-level and the water vapor flux divergence being positive, water vapor divergence is not benefit for precipitation.

相似文献/References:

[1]许霖,姚蓉,陈斗,等.湖南两次流域性致洪暴雨异同点分析[J].气象研究与应用,2014,35(02):27.
[2]叶朗明,陈明惠,夏冠聪.华南一次特大暴雨诊断分析及数值模拟[J].气象研究与应用,2014,35(03):20.
[3]杨新 柯文华 张小荣 任文斌 廖胜石.两次副高边缘特大暴雨对比分析[J].气象研究与应用,2014,35(04):1.
[4]陈 冰,江满桃,郭潮升,等.化州暴雨气候特征分析及极端事件重现期计算[J].气象研究与应用,2014,35(04):19.
[5]蒙炤臻,陈见,韩慎友,等.广西台风残涡暴雨发生特征分析[J].气象研究与应用,2017,38(01):20.
　Characteristic Analysis on Rainstorms of Typhoon Remnant Vortexes in Guangxi[J].Journal of Meteorological Research and Application,2017,38(02):20.
[6]黄卓帆,黄冬梅,赖晟.河池市复杂地形的一次强降雨分析[J].气象研究与应用,2017,38(01):50.
　Huang Zhuo-fan,Huang Dong-mei,Lai Sheng.Analysis of a Heavy Rainfall in Complex Terrain of Hechi City[J].Journal of Meteorological Research and Application,2017,38(02):50.
[7]林墨,林宗桂,廖雪萍,等.云系结构特征与降雨强度关系分析[J].气象研究与应用,2017,38(03):36.
　Lin Mo,Lin Zong-gui,Liao Xue-ping,et al.Analysis of the relationship between the cloud structure and precipitation intensity[J].Journal of Meteorological Research and Application,2017,38(02):36.
[8]李渝平,王庆国,苏兆达.广西一次暴雨过程的数值预报产品位涡特征分析[J].气象研究与应用,2016,37(03):38.
　Li Yu-ping,Wang Qing-guo,Su Zhao-da.Potential Vorticity Analysis of ECMWF Thin-grid Numerical Predication Products of a Rainstorm in Guangxi[J].Journal of Meteorological Research and Application,2016,37(02):38.
[9]刘桂华,李永荣,黄河,等.2015年5月桂北两次暴雨天气过程对比分析[J].气象研究与应用,2016,37(01):38.
　Liu Gui-hua,Li Yong-rong,Huang He,et al.Comparative analysis on twice torrential rain weather processes in May 2015 of northern Guangxi[J].Journal of Meteorological Research and Application,2016,37(02):38.
[10]李岩,周文志,唐熠.桂林11月深秋极端天气分析与专业气象服务对策[J].气象研究与应用,2016,37(01):52.
　Li yan,zhou wen-zhi,Tang Yi.Extreme weather analysis and meteorological service countermeasure for Guilin in November[J].Journal of Meteorological Research and Application,2016,37(02):52.

备注/Memo

备注/Memo:
收稿日期:2015-03-12。
基金项目:黔西南州科技局社会发展攻关项目(2014-32),黔西南州气象局项目(2014-08)共同资助
作者简介:王芬(1978-),女,江苏睢宁人,硕士研究生,工程师,主要从事气候变化研究。
更新日期/Last Update: 1900-01-01