Prof. Gan Jianping received his PhD from the Department of Atmospheric and Oceanic Sciences at McGill University in Canada in 1995. He worked at the University of Oregon in the United States and joined the Hong Kong University of Science and Technology (HKUST) in 2003. He is currently a chair professor in the Department of Ocean Science, Chair of the Department of Oceanography and Director the Center for Ocean Research in Hong Kong and Macao in HKUST. Over more than thirty-five years of his career, Prof. Gan has conducted research on ocean circulation dynamics, coupled physics-biogeochemistry and ocean numerical simulations from bays, offshore shelves to ocean basins in China, Canada, the United States and Hong Kong (China). His research includes field observations, theory, numerical modeling and interdisciplinary research. Prof. Gan has undertaken more than 40 scientific research projects in the United States, Mainland China and Hong Kong, including grand projects such as TRS (HKD 40 m) and AoE (HKD 87 m) funded by Hong Kong Grants Council. He has published more than 130 articles and has given invited or keynote lectures at nearly 20 international conferences. Prof. Gan is the founding chairman of the Ocean Section of the Asia-Oceania Geoscience Society (AOGS) and has served on the Hong Kong Research Grants Council and other academic institutions.
Carbon cycle and budget in the China Sea: from dynamics-based modeling prospect
Carbonate dynamics is jointly governed by 3D circulation physics, air-sea coupling and biogeochemical processes in the ocean. The marginal South China Sea and the shelf seas of the Bohai Sea, Yellow Sea, and East China Sea are linked together by the Taiwan Strait to form the China Seas. The seas in the CS are often characterized by complex interactions between land, ocean, and atmosphere, they exhibit rich dynamics driven by a variety of feedback and forcing mechanisms. Marginal seas and coastal areas in the CS are particularly vulnerable to climate change effects and anthropogenic stressors. The ocean models in marginal sea, including CS, often suffer from their poor representation of regional physics-biogeochemistry and fail to capture characteristics of carbon cycle and underlying coupled physics-biogeochemistry dynamics. Based regional model CMOMS (China Sea Multi-scale Ocean Modeling System, https://odmp.ust.hk/cmoms/), we derived new insights into the three-dimensional circulation in multi-scale CS system in response to the intrinsic/extrinsic forcing and associated biogeochemical response in the system. We outlined the pathway of the biogeochemical fluxes, quantified the biogeochemical response to the fluxes and carbon budget in the system. We found that the variability of carbon cycle is mainly governed by the three-dimensional biogeochemical transports associated extrinsically with the lateral transport and intrinsically with fluxes due to local circulation processes as well as active biogeochemical cycles that provide additional source/sink.
