高原气象

高原气象 >

2018 , Vol. 37 >Issue 5: 1233 - 1240

DOI: https://doi.org/10.7522/j.issn.1000-0534.2018.00028

论文

高原涡与高原切变线伴随出现的统计特征

  • 刘自牧 ,
  • 李国平 ,
  • 张博
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  • 成都信息工程大学大气科学学院, 四川 成都 610225;气象灾害预报预警与评估协同创新中心, 江苏 南京 210044;中国民用航空飞行学院空中交通管理学院, 四川 广汉 618300

收稿日期: 2017-08-31

  网络出版日期: 2018-10-28

基金资助

国家自然科学基金项目（41675057，41765003，41675042）

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Statistical Characteristics of the Concurrence between Qinghai-Tibetan Plateau Vortex and Qinghai-Tibetan Plateau Shear Line

  • LIU Zimu ,
  • LI Guoping ,
  • ZHANG Bo
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  • School of Atmosphere Sciences, Chengdu University of Information Technology, Chengdu 610225, Sichuan, China;Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing 210044, Jiangsu, China;College of Air Traffic Management, Civil Aviation Flight University of China, Guanghan 618300, Sichuan, China

Received date: 2017-08-31

  Online published: 2018-10-28

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摘要

高原涡、高原切变线是影响高原地区最主要的天气系统。利用2005-2016年NCEP/CFSR高分辨率再分析资料，采用客观识别方法，统计分析了高原涡、高原切变线伴随发生的数量、生成的先后顺序和源地等。结果表明，近12年来，客观识别的高原涡年平均生成45个，高原切变线年均生成48条，30%左右的高原涡与高原切变线伴随出现，相伴出现的现象在整个高原均有发生。两者伴随出现时，高原切变线往往先于高原涡生成；当高原涡伴随高原切变线出现时，高原切变线的维持时间较长；而无论是否有高原切变线伴随，高原涡的维持时间基本保持不变。

关键词： 高原涡; 高原切变线; 客观识别; 伴随出现

本文引用格式

刘自牧 , 李国平 , 张博 . 高原涡与高原切变线伴随出现的统计特征[J]. 高原气象, 2018 , 37(5) : 1233 -1240 . DOI: 10.7522/j.issn.1000-0534.2018.00028

Abstract

Qinghai-Tibetan Plateau vortex (QTPV) and Qinghai-Tibetan Plateau Shear Line (QTPSL) as the main weather system affect the plateau region.Using NCEP/CFSR high resolution reanalysis data from 2005 to 2016 to objectively identify QTPV and QTPSL, statistics both concurrent number, generated sequence, and source and so on.The results are as follows:the objective identification QTPV were 45 at an average annual rate in the last 12 years, the QTPSL were 48 at an average annual rate, about 30% QTPV and QTPSL occurred concurrently.The phenomenon of QTPV and QTPSL appears in the whole plateau.When the two appear together, QTPSL usually takes place before the QTPV.When QTPV appears, QTPSL will maintain for a long time, and whether there is QTPSL, QTPV's holding time remain unchanged.

Key words： Qinghai-Tibetan Plat; Qinghai-Tibetan Plat; objective identifica; concurrently

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