A climatological northern boundary index for the East Asian summer monsoon and its interannual variability


Jie Chen1, Wei Huang2, Liya Jin3,4, Jianhui Chen2, Shenqian Chen3 and Fahu Chen5,6, (1)Lanzhou University, Key Laboratory of Western China’s Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou, China, (2)College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, China, (3)Lanzhou University, Lanzhou, China, (4)Chengdu University of Information Technology, Chengdu, China, (5)Alpine Paleoecology and Human Adaptation Group (ALPHA), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China, (6)Lanzhou University, MOE Key Laboratory of Western China's Environmental System, College of Earth and Environmental Sciences, Lanzhou, China