Topic: Response of air-sea CO₂ flux in tropical Pacific and Indian Ocean to El Niñ o

Speaker: Liao Enhui, Shanghai Jiaotong University

Time: 10:00-11:30 p.m., March 22, 2023 (Wednesday)

Tencent meting ID: 511-663-533

Introduction to the Lecture:

The considerable uncertainty in the global ocean carbon sink under the impact of El Nino affects the accurate estimation of the global ocean carbon sink. Based on the GFDL’s latest ocean physical and biogeochemical model (MOM 6-COALT 2), the report will discuss the impact mechanism of El Niñ o on air-sea CO₂ flux in tropical Pacific and Indian Ocean, especially the difference of air-sea carbon flux in the Pacific Ocean caused by different types of El Niñ o and its impact on atmospheric CO₂ concentration. The report will also discuss how El Nino may affect the air-sea carbon flux in the Indian Ocean through teleconnection, which caused the extreme anomaly of air-sea carbon flux in the Indian Ocean in 2015-2016. Also, a brief introduction will be given to the simulation of the GFDL’s latest ocean model MOM6-COBALT2 and its application in the region.

Profile of the Speaker:

Liao Enhui is an Associate Professor of Shanghai Jiaotong University supported by the Shanghai Pujiang Program. In 2017, he obtained a doctorate in oceanography from the University of Delaware, and then engaged in postdoctoral research in the Department of Geosciences, Princeton University. In August 2022, he joined Shanghai Jiaotong University. In recent years, he has been applying the global ocean biogeochemical numerical model (MOM6-COBALT2) to simulate and study the global ocean carbon cycle, with a focus on the interannual variation of air-sea CO₂ flux in tropical Pacific and Indian Ocean.