地理科学 ›› 2018, Vol. 38 ›› Issue (7): 1174-1182.doi: 10.13249/j.cnki.sgs.2018.07.019
收稿日期:
2017-09-01
修回日期:
2018-02-07
出版日期:
2018-07-20
发布日期:
2018-07-20
作者简介:
作者简介:叶许春(1982-),男,安徽潜山人,博士,副教授,主要从事水文水资源变化及流域水文过程的模拟研究。E-mail:
基金资助:
Xuchun Ye1,2(), Chongyu Xu3, Dan Zhang2, Xianghu Li2
Received:
2017-09-01
Revised:
2018-02-07
Online:
2018-07-20
Published:
2018-07-20
Supported by:
摘要:
以长江中下游流域实测降水数据和亚洲季风指数为基础,采用Mann-Kendall检验、线性相关和偏相关分析、小波分析等方法,揭示长江中下游夏季降水的时空变化特征及其与亚洲季风系统之间的相互关系和影响差异。结果表明,近50 a来长江中下游夏季降水量呈显著的增加趋势,其与亚洲主要夏季风指数之间均呈负的线性相关关系,且显著性影响范围东亚夏季风大于南海夏季风大于南亚夏季风。不同亚洲夏季风子系统间存在复杂的相互作用关系,尤其是东亚夏季风和南海夏季风之间的相互作用对长江中下游夏季降水产生了重要影响。长江中下游夏季降水量与亚洲主要夏季风指数存在2~4 a时间尺度上的显著相关性,且以反位相关系为主。此外,长江中下游夏季降水量与东亚夏季风的相干性最为突出,在小于8 a的时间尺度上,两者之间的相关性在近50 a来呈现减弱的趋势,特别是自20世纪80年代中后期以来。
中图分类号:
叶许春, 许崇育, 张丹, 李相虎. 长江中下游夏季降水变化与亚洲夏季风系统的关系[J]. 地理科学, 2018, 38(7): 1174-1182.
Xuchun Ye, Chongyu Xu, Dan Zhang, Xianghu Li. Variation of Summer Precipitation and Its Connection with Asian Monsoon System in the Middle-lower Yangtze River Basin[J]. SCIENTIA GEOGRAPHICA SINICA, 2018, 38(7): 1174-1182.
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