陕西暖季雷暴的主模态及其可能的影响机制

doi:10.11867/j.issn.1001-8166.2013.09.1025

地球科学进展 ›› 2013, Vol. 28 ›› Issue (9): 1025 -1035. doi: 10.11867/j.issn.1001-8166.2013.09.1025

陕西暖季雷暴的主模态及其可能的影响机制

张宏芳 ¹，潘留杰 ²，侯建忠 ²，李明娟 ²

1.陕西省气象服务中心，陕西西安 710014; 2.陕西省气象台，陕西西安 710014

收稿日期:2013-06-10 修回日期:2013-08-12 出版日期:2013-09-10
基金资助:
陕西省气象局预报员专项“弱天气系统强迫下黄土高原强对流云的初生及演变”（编号：2013Y-7）；公益性行业（气象）科研专项“西北地区复杂地形下雷暴及短时强降水预报预警关键技术研究”（编号：GYHY201306006）资助.

The Major Mode of the Shaanxi Thunderstorm and Possible Influence Mechanism

Zhang Hongfang ¹， Pan Liujie ²，Hou Jianzhong ²，Li Mingjuan ²

1.Shaanxi Meteorological Service Centre，Xi’an 710014，China；2.Shaanxi Meteorological Observatory，Xi’an 710014，China

Received:2013-06-10 Revised:2013-08-12 Online:2013-09-10 Published:2013-09-10

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利用1960—2010年陕西76个台站雷暴、闪电观测数据和NCEP/NCAR再分析资料，基于EOF、小波等方法分析陕西暖季(5~9月)雷暴的主模态及可能的影响机制。主要结论如下：①近51年陕西雷暴日数总体呈下降趋势，月际上雷暴日数7月达到峰值，暖季雷暴日数占全年的70%以上；②雷暴日数空间型主要表现为东西向的反位相振荡（EOF1）与陕北、关中南部负异常及延安地区、陕西南部正异常（EOF2），分别解释了总方差的53.1%和13.6%；③Morlet小波分析显示EOF1，EOF2分别存在3~6年和15年左右的年代际变化周期；④EOF1空间模态的时间系数回归显示暖季大陆上气压减弱，西太平洋副热带高压584线位于30°N附近，西南暖湿气流向北输送增强，陕西西部雷暴增多；EOF2时间系数回归表明当北半球极涡偏弱，蒙古国附近气压偏强，导致北风分量增强，有利于EOF2空间型分布；⑤西太平洋副热带高压位置、强度是影响EOF1的重要因子，同样，北半球极涡可能对陕西雷暴空间模态EOF2有显著影响。

关键词: 雷暴, 主模态, 西太平洋副热带高压, 极涡

Based on observational data of thunderstorm and lightening of 76 stations in Shaanxi, the National Centers for Environmental Prediction / National Centers for Atmospheric Research (NCEP/NCAR) reanalysis dataset from 1960 to 2010, the major modes of thunderstorm in warm seasons (May to September) of Shaanxi province and mechanism of its possible influence are studied .The results show that:①the thunderstorms show an obvious decreasing trend in the past 51 years, the average thunderstorm days reaching the peak in July, of which 70% occurred in warm season.②There are two dominant modes: EOF1 mode depicting a thunderstorm phase oscillation between the East and the West of Shaanxi province and EOF2 mode describing negative anomaly oscillation between the North and the middle of Shaanxi province and positive anomaly oscillation between Yan’an area and some areas of Southern Shaanxi province. These two modes account for 53.1% and 13.6% of total variance respectively. ③Analysis with Morlet wavelet method indicates that EOF1 mode has an interannual changing cycle of 3 to 6 years and EOF2 has an interdecadal change cycle of about 15 years.④The meteorological field regression of EOF1 time coefficient shows the West Pacific subtropical high 584 line is located near 30°N ,the flowing of the southwest warm wet airflow to the north increases and the thunderstorms increase in the west of Shaanxi province; the time coefficient regression of EOF2 shows that the Northern Hemisphere polar vortex is weaker and the pressure over Mongolia area is stronger than usual result in the north wind component’s increasing ,which contributes to the formation EOF2. ⑤The important factors influencing Shaanxi thunderstorm spatial mode EOF1 include the location and the strength of Northwest Pacific subtropical high. In the same way, the Northern Hemisphere polar vortex possibly has a close connection with Shaanxi thunderstorm.

Key words: Thunderstorm, Major modes, West pacific subtropical high, Polar vortex

中图分类号:

P446

[1]Ma Ming, Lü Weitao, Zhang Yijun, et al. Analysis of lightning disasters in China and their correlative factors[J]. Advances in Earth Science,2008, 23(8):856-865.[马明,吕伟涛，张义军，等. 我国雷电灾害及相关因素分析[J]. 地球科学进展, 2008, 23(8):856-865.]

[2]Zhou Chuangbing, Li Dianqing. Advances in rainfall-induced landslides mechanism and risk mitigation[J]. Advances in Earth Science, 2009, 24(5): 477-487.[周创兵,李典庆. 暴雨诱发滑坡致灾机理和减灾方法研究进展[J]. 地球科学进展, 2009,24(5):477-487.]

[3]Wang Donghai, Zhong Shuixin, Liu Ying, et al. Advances in the study of rainstorm in Northeast China[J]. Advances in Earth Science, 2007, 22(6):549-560.[王东海,钟水新,刘英,等. 东北暴雨的研究[J]. 地球科学进展, 2007, 22(6): 549-560.]

[4]Shou Shaowen, Li Shenshen, Yao Xiuping. Mesoscale Meteorology[M].Beijing:China Meteorological Press,2003:370.[寿绍文，励申申，姚秀萍．中尺度气象学［Ｍ］．北京:气象出版社,2003:370.]

[5]Pan Liujie, Zhu Weijun,Zhou Yuquan, et al. Climatic characteristic of storm around Beijing area in August[J]. Plateau Meteorology,2010,29(6):1 579-1 586.[潘留杰，朱伟军，周毓荃，等.环北京地区八月风暴云气候特征[J]. 高原气象，2010，29(6)：1 579-1 586.]

[6]Liu Ying，Liu Chongjian，Zhou Haiguang.The early warning system for severe weather events: The theory and applications[J]. Advances in Earth Science,2008, 23(11)：1 141-1 149.[刘英，柳崇健，周海光．突发性强灾害天气预警系统:理论与应用[J]. 地球科学进展, 2008, 23(11):1 141-1 149.]

[7]Chen Sirong，Zhu Weijun，Zhou Bing．Climate characteristic and variation tendency of thunderstorm in China[J]．Chinese Transactions of Atmospheric Sciences，2009，32(5)：703-710．[陈思蓉，朱伟军，周兵．中国雷暴气候分布特征及变化趋势[J]．大气科学学报，2009,32（5）：703-710.]

[8]Cai Xinling, Liu Yu, Kang Lan，et al. Climatic characteristic of thunderstorm in Shaanxi Province[J].Plateau Meteorology, 2004, 23(Suppl.)：118-123.[蔡新玲, 刘宇, 康岚,等.陕西省雷暴的气候特征[J]. 高原气象，2004,23(增刊)：118-123.]

[9]Zeng Qincun,Zhang Banglin. On the seasonal variation of atmospheric general circulation and the monsoon[J]. Chinese Journal of Atmospheric Sciences,1998,22(6):805-813.[曾庆存,张邦林.大气环流的季节变化和季风[J].大气科学, 1998,22(6):805-813.]

[10]Wang Lin, Feng Juan. Two major modes of the wintertime precipitation over China[J]. Chinese Journal of Atmospheric Sciences,2011,35(6)：1 105-1 116.[王林,冯娟.我国冬季降水年际变化的主模态分析[J].大气科学,2011,35(6):1 105-1 116.]

[11]Zhang Hongfang,Chen Haishan. Evaluation of summer circulation simulation over East Asia by 21 climate models Ⅱ： Interannual variability[J]. Journal of the Meteorological Sciences, 2011,31(3):247-257.[张宏芳，陈海山. IPCC AR4气候模式对东亚夏季大气环流模拟能力的评估II: 年际变化[J]. 气象科学，2011,31(3):247-257.]

[12]Chen Haishan,Sun Zhaobo. The effects of eurasian snow cover anomaly on winter atmospheric general circulation part I. Observational studies[J]. Chinese Journal of Atmospheric Sciences, 2003,27(3):304-316.[陈海山，孙照渤.欧亚积雪异常分布对冬季大气环流的影响I:观测研究[J]. 大气科学，2003,27(3):304-316.]

[13]Torrence C,Compo G P. A practical guide to wavelet analysis[J]. Bulletin of the American Meteorological Society,1998,79(1):61-78.

[14]Zhu Binghai, Wang Pengfei, Su Jiaxin. Meteorology Dictionary[M].Shanghai: Shanghai Dictionary Press,1985.[朱炳海,王鹏飞,束家鑫.气象学词典[M]. 上海:上海辞书出版社,1985.]

[15]Xiong Guangming，Chen Quanliang，Zhu Keyun． Relationship between stratospheric polar vortex change and temperature, precipitation in winter of China[J]. Plateau Meteorology, 2012,31（4）:1 001-1 006.[熊光明，陈权亮，朱克云，等．平流层极涡变化与我国冬季气温、降水的关系[J].高原气象，2012,31（4）:1 001-1 006.]

[16]North G R, Bell T L,Cahalan R F,et al. Sampling errors in the estimation of empirical orthogonal function[J].Monthly Weather Review, 1982,110(7):699-706.

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