[1]覃卫坚,李耀先,陈思蓉.同期MJO对广西汛期强降水过程的影响[J].气象研究与应用,2017,38(04):18-21.
　Qin Weijian,Li Yaoxian,Chen Sirong.The influence of Madden-Julian Oscillation on the heavy rainfall process during flood season in Guangxi[J].Journal of Meteorological Research and Application,2017,38(04):18-21.
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同期MJO对广西汛期强降水过程的影响()
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气象研究与应用[ISSN:1673-8411/CN:45-1356/P]

卷:
第38卷
期数:
2017年04期
页码:
18-21
栏目:
天气气候
出版日期:
2017-12-29

文章信息/Info

Title:
The influence of Madden-Julian Oscillation on the heavy rainfall process during flood season in Guangxi
作者:
覃卫坚1;  李耀先2;  陈思蓉1
1. 广西区气候中心, 广西 南宁 530022;
2. 广西区气象局, 广西 南宁 530022
Author(s):
Qin Weijian1;  Li Yaoxian2;  Chen Sirong1
1. Guangxi Climate Center, Nanning Guangxi 530022;
2. Guangxi Meteorological Bureau, Nanning Guangxi 530022
关键词:
MJO; 暴雨; 广西
Keywords:
Madden-Julian Oscillation (MJO); rainstorm; Guangxi
分类号:
P46
摘要:
使用1978~2013年广西80个气象观测站的日降水资料、NOAA MJO指数逐候资料和OLR逐日资料，研究MJO活动对广西汛期强降水的影响，得到结果：当MJO对流所处各位相位于第1位相（80E）时，广西暴雨频数偏少；当MJO对流所处各位相位于第3位相（120E）时，广西暴雨频数偏多。广西降水与赤道MJO对流和中纬度季节内振荡有密切的关系，赤道地区MJO对流强度偏强，有向北传播时广西降水偏多，赤道地区MJO对流强度偏弱时广西降水偏少。
Abstract:
The influence of MJO on the heavy rainfall process during flood season in Guangxi was studied by using daily precipitation data from the 80 meteorological stations in Guangxi, NOAA MJO index pentad data, and OLR daily data from 1961~2013. The results showed that:when the MJO convection center was located in phase 1 (80E), the frequency of rainstorm in Guangxi decreased; but when the MJO-convection center was located in phase 3 (120E), the frequency of rainstorm increased. The precipitation in Guangxi was closely related to the equatorial MJO convection and the mid latitude intraseasonal oscillation. When the intensity of MJO convection in the equatorial region became stronger and moved toward the north, the precipitation in Guangxi increased; in other words, when the intensity of MJO convection in the equatorial region was weaker, the precipitation in Guangxi decreased.

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备注/Memo

备注/Memo:
收稿日期:2017-05-06。
基金项目:广西自然科学基金（2013GXNSFAA019273），广西区气象局气象科研计划（桂气科2016Z04），广西延伸期气候预测创新团队项目共同资助
作者简介:覃卫坚(1971-),男,广西人,博士研究生,高级工程师,主要从事天气气候动力学研究,(E-mail)qinweijian2008@126.com
更新日期/Last Update: 1900-01-01