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| Air-sea carbon-dioxide flux estimated by eddy covariance method from a buoy observation | |
| 作者姓名： | HUANG Yansong SONG Jinbao WANG Juanjuan FAN Conghui |
| 作者单位： | South China Sea Marine Engineering Surveying Center, State Oceanic Administration, Guangzhou 510300, China;Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Graduate School of Chinese Academy of Sciences, Beijing 100049, China;Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China |
| 基金项目： | The National Basic Research Program of China under contract No. 2011CB403501; the Public Science and Technology Research Funds Projects of Ocean of the State oceanic Administration of China under contract No. 200905012-9 |
| 摘 要： | Precise measurements of the CO2 gas transfer across the air-sea interface provide a better understanding of the global carbon cycle.The air-sea CO2 fluxes are obtained by the eddy covariance method and the bulk method from a buoy observation in the northern Huanghai sea.The effects of buoy motion on flux calculated by the eddy covariance method are demonstrated.The research shows that a motion correction can improve the correlation coefficient between the CO2 fluxes estimated from two different levels.Without the CO2-H2 O cross-correlation correction which is termed as PKT correction,the air-sea CO2 fluxes estimated by eddy covariance method using the motion corrected data are nearly an order of magnitude larger than those estimated by the bulk method.After the CO2-H2 O cross-correlation correction,some eddy covariance CO2 fluxes indeed become closer to the bulk CO2 flux,whereas some are overcorrected which are in response to small water vapor flux. |
| 关 键 词： | air-sea fluxes motion correction bulk carbon-dioxide flux method eddy covariance method |
| 收稿时间： | 2012/3/16 0:00:00 |
| 修稿时间： | 2012/7/24 0:00:00 |
Air-sea carbon-dioxide flux estimated by eddy covariance method from a buoy observation |
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| HUANG Yansong,SONG Jinbao,WANG Juanjuan,FAN Conghui.Air-sea carbon-dioxide flux estimated by eddy covariance method from a buoy observation[J].Acta Oceanologica Sinica,2012,31(6):66-71. | |
| Authors: | HUANG Yansong SONG Jinbao WANG Juanjuan and FAN Conghui |
| Institution: | 1. South China Sea Marine Engineering Surveying Center,State Oceanic Administration,Guangzhou 510300,China;Key Laboratory of Ocean Circulation and Waves,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China 2. Key Laboratory of Ocean Circulation and Waves,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China 3. Key Laboratory of Ocean Circulation and Waves,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;Graduate School of Chinese Academy of Sciences,Beijing 100049,China |
| Abstract: | Precise measurements of the CO2 gas transfer across the air-sea interface provide a better understanding of the global carbon cycle. The air-sea CO2 fluxes are obtained by the eddy covariance method and the bulk method from a buoy observation in the northern Huanghai sea. The effects of buoy motion on flux calculated by the eddy covariance method are demonstrated. The research shows that a motion correction can improve the correlation coefficient between the CO2 fluxes estimated from two different levels. Without the CO2-H2O cross-correlation correction which is termed as PKT correction, the air-sea CO2 fluxes estimated by eddy covariance method using the motion corrected data are nearly an order of magnitude larger than those estimated by the bulk method. After the CO2-H2O cross-correlation correction, some eddy covariance CO2 fluxes indeed become closer to the bulk CO2 flux, whereas some are overcorrected which are in response to small water vapor flux. |
| Keywords: | air-sea fluxes motion correction bulk carbon-dioxide flux method eddy covariance method |
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