Changes in East Asian summer monsoon and summer rainfall over eastern China during recent decades
Changes in East Asian summer monsoon and summer rainfall over eastern China during recent decades
复制标题
DOI：
10.1007/s11434-015-0824-x
复制
发表时间：
2015-06
期刊：
影响因子：
18.9
通讯作者：
Renhe Zhang
中科院分区：
文献类型：
--
作者：
Renhe Zhang
在中国东部100e以东的东亚季风区，受东亚夏季风（EASM）控制的夏季降水主要集中在6 - 8月。根据1951年至2014年中国160个气象站对上述地区的降雨观测，夏季降雨量占全年总降雨量的一半以上，占52%。较强的EASM对应中国北方降水较多，而较弱的EASM则导致长江-淮河流域降水较多。近几十年来，中国东部夏季气候变化受气候系统内部自然因子和温室气体和气溶胶排放等人为影响的外部强迫影响。因此，近年来的研究主要集中在自然和人为因素引起的东亚季风和夏季降水变化上，这对于从全球变暖的角度更好地理解它们在东亚气候中的作用至关重要。与全球变暖趋势相似，1951-2014年中国东部夏季气温也出现了显著的上升趋势，为0.1 C/ a。在数据诊断方面，在变暖背景下，EASM和中国东部夏季降水的变化特征得到了较好的记录。自20世纪60年代中期以来，EASM强度呈下降趋势，中国北方降水减少，长江-淮河流域降水增加[1-4]。然而，十年的变化
In the East Asian monsoon region over eastern China, east of 100 E, summer rainfall controlled by the East Asian summer monsoon (EASM) is mainly concentrated during June–August. Summer rainfall accounts for more than half of the annual total, or 52%, according to rainfall observations from 160 meteorological stations in China from 1951 to 2014 over the aforementioned region. A stronger EASM corresponds to more rainfall over northern China, whereas a weaker EASM leads to more rainfall over the Yangtze–Huai River valley. Summer climate changes over eastern China in recent decades have been affected by internal natural factors within the climate system and by external forcing arising from the anthropogenic effects of greenhouse gas (GHG) and aerosol emissions. Therefore, recent research has focused on EASM and summer rainfall variations resulting from natural and anthropogenic factors, which is crucial for providing a better understanding of their roles in the East Asian climate from a global warming perspective.Similar to the global warming, eastern China has also experienced an increase in summer air temperatures during the period 1951–2014, with a significant trend of 0.1 C/decade. In terms of data diagnosis, the changing features of EASM and summer rainfall over eastern China under the warming background are well documented. A declining trend in EASM intensity has been observed since the mid-1960s, with decreased rainfall in northern China and increased rainfall in the Yangtze–Huai River basin [1–4]. However, a decadal shift in the