GSTDTAP  > 气候变化
DOI10.1007/s00382-016-3496-6
Heavy precipitation in the southwest of Iran: association with the Madden-Julian Oscillation and synoptic scale analysis
Nazemosadat, M. Jafar; Shahgholian, K.
2017-11-01
发表期刊CLIMATE DYNAMICS
ISSN0930-7575
EISSN1432-0894
出版年2017
卷号49
文章类型Article
语种英语
国家Iran
英文摘要

Some important characteristics of the November-April heavy precipitation in southwestern parts of Iran and their linkages to the Madden-Julian Oscillation (MJO) were assessed for the period of 1975-2011. Daily precipitation data in nine meteorological stations spread in various parts of the study area and the corresponding MJO indices were analyzed. For each station, precipitation data were sorted in descending order and those values that fell within 5% of the highest records were categorized as the heavy precipitation. Besides this, the 10% threshold was also analyzed as an axillary assessment. The considered heavy precipitation data (5% threshold) accounted from about 26-35% of total annual precipitation. About half of the heavy precipitation occurred during December-January period and the other half distributed within the months of March, February, November and April by about 17, 14, 13and 6%, respectively. The highest frequency of heavy precipitation was related to the MJO phase 8. After this, the more frequent precipitation events were respectively associated to the phases 2, 7, 1, 6, 5 and 4 of the MJO. For the phases 1, 2, 7 and 8 frequency of the heavy precipitation statistically increased when the MJO amplitude was greater than unity. In contrast, for phases 4 and 5, heavy precipitation was generally linked to the spells that the amplitude size was lower than unity. Formation of a strong north-south oriented cold front mainly in Saudi Arabia and west-east oriented warm fronts in the southwest of Iran were realized as the key elements for initiating heavy precipitation over the study area. Although development of the Mediterranean-based cyclonic circulation is essential for the formation of these fronts, moisture transport mostly originates from northern parts of the Arabian Sea, southern parts of the Red Sea and the Persian Gulf.


英文关键词Iran MJO Persian Gulf Precipitation Shiraz Synoptically analysis
领域气候变化
收录类别SCI-E
WOS记录号WOS:000414153800009
WOS关键词INDIAN-OCEAN PRECIPITATION ; MULTIVARIATE MJO INDEX ; LA-NINA ; ENSO ; RAINFALL ; VARIABILITY ; CIRCULATION ; PREDICTION ; INTENSITY ; DROUGHT
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/35334
专题气候变化
作者单位Shiraz Univ, Water Engn Dept, Coll Agr, AORC, Shiraz, Iran
推荐引用方式
GB/T 7714
Nazemosadat, M. Jafar,Shahgholian, K.. Heavy precipitation in the southwest of Iran: association with the Madden-Julian Oscillation and synoptic scale analysis[J]. CLIMATE DYNAMICS,2017,49.
APA Nazemosadat, M. Jafar,&Shahgholian, K..(2017).Heavy precipitation in the southwest of Iran: association with the Madden-Julian Oscillation and synoptic scale analysis.CLIMATE DYNAMICS,49.
MLA Nazemosadat, M. Jafar,et al."Heavy precipitation in the southwest of Iran: association with the Madden-Julian Oscillation and synoptic scale analysis".CLIMATE DYNAMICS 49(2017).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Nazemosadat, M. Jafar]的文章
[Shahgholian, K.]的文章
百度学术
百度学术中相似的文章
[Nazemosadat, M. Jafar]的文章
[Shahgholian, K.]的文章
必应学术
必应学术中相似的文章
[Nazemosadat, M. Jafar]的文章
[Shahgholian, K.]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。