The 2nd International Symposium on Atmospheric and Oceanic Sciences (SAOS 2020) will be held in Xiamen, China, during May 29-31, 2020. The aim of SAOS 2020 is to provide a stage for researchers, engineers, academicians as well as industrial professionals from all over the world to present their research results and development activities in Atmospheric Sciences, Climatology, Dynamic Meteorology, Eco- hydrology, Hydrology, Limnology, Marine Science and other related topics. SAOS 2020 will be a valuable and important platform for inspiring international and interdisciplinary exchange at the forefront of Atmospheric and Oceanic Sciences.