【标题】Distributions and air-sea fluxes of CO2 in the summer Bering Sea
【Title】Distributions and air-sea fluxes of CO2 in the summer Bering Sea
【期刊】Acta Oceanologica Sinic
【Journal】Acta Oceanologica Sinic
partial pressure of CO2 / CO2 system / air-sea CO2 flux / Bering Sea
【Abstract】The 3rd Chinese National Arctic Research Expedition (CHINARE-Arctic III) was carried out from July to September in 2008. The partial pressure of CO 2 ( p CO 2 ) in the atmosphere and in surface seawater were determined in the Bering Sea during July 11–27, 2008, and a large number of seawater samples were taken for total alkalinity (TA) and total dissolved inorganic carbon (DIC) analysis. The distributions of CO 2 parameters in the Bering Sea and their controlling factors were discussed. The p CO 2 values in surface seawater presented a drastic variation from 148 to 563 μatm (1 μatm = 1.013 25×10 611 Pa). The lowest p CO 2 values were observed near the Bering Sea shelf break while the highest p CO 2 existed at the western Bering Strait. The Bering Sea generally acts as a net sink for atmospheric CO 2 in summer. The air-sea CO 2 fluxes in the Bering Sea shelf, slope, and basin were estimated at 619.4, 6116.3, and 615.1 mmol/(m 2 ·d), respectively. The annual uptake of CO 2 was about 34 Tg C in the Bering Sea.