Dr Cheung is an expert in environmental hazards, with abundant knowledge on typhoon, hurricane, rainstorm, monsoon, thunderstorm, flooding and their disaster management. He is physical geographer and climatologist by training at The University of Hong Kong and Oxford University. He has been carrying out extensive research on tropical cyclone climatology, natural hazards, risk, vulnerability, resilience and disaster management.
Between 2004 and 2015, he was Senior Lecturer in Environmental Hazards and Disaster Management at Kingston University London. He used to review articles for the journals "Area" and "Geography" as well as being a book proposal reviewer for Oxford University Press and John Wiley & Sons. He is regularly invited by media to give commentary at short notice on natural disasters - he appeared live on Sky TV and international broadcaster Bloomberg TV in October 2012 to talk about the devastation caused by Superstorm Sandy, for example.
In mid 2015, he took on the role of Senior Catastrophe Analyst at SCOR Reinsurance Company (Asia) Ltd for China reinsurance market undertaking risk analysis on catastrophe loss and portfolio development until mid 2017. Then he joined The University of Hong Kong Science and Technology as Senior Lecturer in Environmental Risk Management.