Estimate of Global Sea-Air CO2 Flux

Estimate of Global Sea-Air CO2 Flux with Sea-State-Dependent Parameterization

Although the annual global sea-air CO2 flux has been estimated extensively with various wind-dependent-k parameteri- zations, uncertainty still exists in the estimates. The sea-state-dependent-k parameterization is expected to improve the uncertainty existing in these estimates. In the present study, the annual global sea-air CO2 flux is estimated with the sea-state-dependent-k parameterization proposed by Woolf (2005), using NOAA/NCEP reanalysis wind speed and hindcast wave data from 1998 to 2006, and a new estimate, -2.18 Gt C year-1, is obtained, which is comparable with previous estimates with biochemical methods. It is in- teresting to note that the averaged value of previous estimates with various wind-dependent-k parameterizations is almost identical to that of previous estimates with biochemical methods by various authors, and that the new estimate is quite consistent with these av- eraged estimates.

作 者： HU Wei GUAN Changlong   作者单位： HU Wei(Physical Oceanography Laboratory, Ocean University of China, Qingdao 266003, P. R. China;North China Sea Marine Forecast Center, State Oceanic Administration, Qingdao 266033, P. R. China)

GUAN Changlong(Physical Oceanography Laboratory, Ocean University of China, Qingdao 266003, P. R. China) 

刊 名： 中国海洋大学学报（英文版）  ISTIC 英文刊名： JOURNAL OF OCEAN UNIVERSITY OF CHINA  年，卷(期)： 2008 7(3)  分类号： P7  关键词： sea-air CO2 exchange   global CO2 flux   gas transfer velocity   sea-state   wave development status  

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