Global air-sea surface carbon dioxide transfer velocity and flux estimated using 17 a altimeter data and a new algorithm
Global air-sea surface carbon dioxide transfer velocity and flux estimated using 17 a altimeter data and a new algorithm
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使用17个高度计数据和新算法估算全球海-气表面二氧化碳传输速度和通量
DOI：
10.1007/s13131-013-0362-9
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发表时间：
2013-10
期刊：
影响因子：
--
通讯作者：
Xiaohai Yan
中科院分区：
文献类型：
--
作者：
Tan Yu;何宜军;Xiaohai Yan
The global distributions of the air-seaCO2transfer velocity and flux are retrieved from TOPEX/Poseidon and Jason altimeter data from October 1992 to December 2009 using a combined algorithm. The 17 a average global, area-weighted, Schmidt number-corrected mean gas transfer velocity is 21.26 cm/h, and the full exploration of the uncertainty of this estimate awaits further data. The average total CO2flux (calculated by carbon) from atmosphere to ocean during the 17 a was 2.58 Pg/a. The highest transfer velocity is in the circumpolar current area, because of constant high wind speeds and currents there. This results in strongCO2fluxes. CO2fluxes are strong but opposite direction in the equatorial east Pacific Ocean, because the air-sea CO2partial pressure difference is the largest in the global oceans. The results differ from the previous studies calculated using the wind speed. It is demonstrated that the air-sea transfer velocity is very important for estimating air-sea CO2flux. It is critical to have an accurate estimation for improving calculation of CO2flux within climate change studies.
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