碩士 / 國立臺灣海洋大學 / 海洋環境化學與生態研究所 / 98 / Comprehensive carbon chemistry parameters, including dissolved inorganic carbon (DIC), pH, total alkalinity (TA), and fugacity of CO2 (fCO2) were measured in the East China Sea in January (winter) and July (summer) 2008, and May 2009 (spring). Based on this data set, the main controlling factors on seasonal variation of fCO2 – biological and temperature effects, have been examined, using the formulae proposed by Takahashi et al (2002). The result shows that temperature control dominates biological control in the outer shelf, while biological control overwhelms temperature control in the inner shelf. Besides temperature and biological effects, vertical mixing of water column and/or upwelling were found to also have significant influence on seasonal variation of fCO2. Furthermore, this study shows that the entire ECS generally was a sink of atmospheric CO2 in the investigated seasons, with average sea-to-air fluxes of -13.7, -1.8, and -14.5 mmolC m-2 day-1 for spring, summer, and winter, respectively. The only CO2 source area was found along the China coast during the summertime, which was resulted from seasonal coastal upwelling. Assuming that the autumn flux has been the mean of summer and winter values, the ECS is estimated to absorb 0.018 GtC annually, which is consistent with previous studies.
| Identifer | oai:union.ndltd.org:TW/098NTOU5282049 |
| Date | January 2010 |
| Creators | yi-fang Chen, 陳儀芳 |
| Contributors | wen-chen Chou, 周文臣 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 76 |
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