| HUANG Yansong,SONG Jinbao,WANG Juanjuan,FAN Conghui. 2012. Air-sea carbon-dioxide flux estimated by eddy covariance method from a buoy observation. Acta Oceanologica Sinica, (6):66－71 |
| Air-sea carbon-dioxide flux estimated by eddy covariance method from a buoy observation |
| Air-sea carbon-dioxide flux estimated by eddy covariance method from a buoy observation |
| Received:March 16, 2012 Revised:July 24, 2012 |
| DOI：10.1007/s13131-012-0253-5 |
| Key words:air-sea fluxes motion correction bulk carbon-dioxide flux method eddy covariance method |
| 中文关键词: air-sea fluxes motion correction bulk carbon-dioxide flux method eddy covariance method |
| 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; the Fund for Creative Research Groups by the National Natural Science Foundation of China under contract No. 41121064; and the Open Research Foundation for the key Laboratory of Ocean Circulation and Waves. Institute of Oceanology, Chinese Academy of Sciences of China under contract No.KLOCAW1207. |
| Author Name | Affiliation | E-mail | | HUANG Yansong | 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 | | | SONG Jinbao | Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China | songjb@qdio.ac.cn | | WANG Juanjuan | 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 | | | FAN Conghui | Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China | |
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| 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. |
| 中文摘要: |
| 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-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. |
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