TY - Climate Change Research A1 - Jie LIU,Ning-Lian WANG,Ting HUA T1 - Spatial and temporal variations in summer precipitation over the semi-arid region of northern China during 1960-2016 and their links with atmospheric circulation Y1 - 2019-06-06 00:00:00.0 JF - Advances in Climate Change Research JO - Climate Change Research SP - 257 EP - 269 VL - 15 IS - 3 UR - {http://www.climatechange.cn/EN/10.12006/j.issn.1673-1719.2018.135} N1 - 10.12006/j.issn.1673-1719.2018.135 ER -