The ocean has become a significant global carbon sink,absorbing approximately 30%of the increase in anthropogenic CO2 since industrialization.The Southern Ocean contributes around 40%of this absorption.However,the Southern Ocean has the highest uncertainty in the global anthropogenic carbon uptake due to the lack of systematic knowledge of anthropogenic CO2 uptake,distribution,storage,and transport.This paper summarizes the progress of research on carbon source and sink patterns in the open ocean and shelf regions of the Southern Ocean from the perspectives of CO2 fluxes at the sea-air interface,the distribution,storage,and transport of anthropogenic CO2 in the ocean,respectively.It highlights inconsistencies between modelling and measurement results in terms of carbon uptake in the Southern Ocean and the uncertainty in estimating the carbon sink strength of the seasonal ice zone.It also discusses the advantages and disadvan-tages of methods in anthropogenic carbon concentration calculation,as well as the transport mechanisms affecting the anthropogenic carbon inventory,contributing to the understanding of the sea-air CO2 fluxes in the Southern Ocean,as well as the variability of the carbon source/sink pattern and the carbon transport process.These results will be used to better estimate the Southern Ocean and global ocean carbon sink in the future.
关键词
人为碳/碳汇/碳吸收和分布/输运与储存/南大洋
Key words
anthropogenic carbon dioxide/carbon sink/carbon uptake and disteribution/carbon transport and inventory/Southern Ocean
维普
万方数据