Lijing Cheng received his PhD from the Institute of Atmospheric Physics (IAP), Chinese Academy of Sciences (CAS) in 2014 . He then worked in IAP/CAS as a full professor. His work includes examination of systematic errors in ocean observations, study of historical ocean heat content (OHC) change, and Earth's energy budget. He is a lead author of United Nations - IPCC Special Report for Ocean and Cryosphere; United Nations - World Ocean Assessment. He is an oceanographer and climate scientist from IAP/CAS, working on ocean observations, ocean heat content and earth's energy budget. Lead Author of IPCC SROCC