Seasonal variation of air-sea CO2 flux and contribution of biological processes to carbon source/sink in a large river-dominated shelf sea

The dataset involves oceanographic chemical data from the Changjiang plume-impacted shelf area across four seasons. The sampling periods are as follows: winter (December 25, 2006 - February 5, 2007), spring (March 26 - May 10, 2007), summer (July 15 - August 25, 2006), and autumn (October 3 - December 6, 2007).