| Investigations on distributions and fluxes of sea-air CO_2 of the expedition areas in the Arctic Ocean |
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| 作者姓名： | 王伟强 陈立奇 杨绪林 黄宣宝 |
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| 作者单位： | 王伟强,杨绪林(Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China;Key Laboratory of Global Change and Marine-Atmospheric Chemistry, State Oceanic Administration, Xiamen 361005, China);陈立奇(Chinese Arctic and Antarctic Administration, Beijing 100860, China;Key Laboratory of Global Change and Marine-Atmospheric Chemistry, State Oceanic Administration, Xiamen 361005, China);黄宣宝(Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China) |
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| 摘 要： | 揋reenhouse effect?causing global warming has been an important issue of studying climate change. In the latest 100 years, the earth surface temperature has been increased by about 0.4℃—0.8℃1,2]. And this has been becoming a hotspot of the world3,4]
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Investigations on distributions and fluxes of sea-air CO2 of the expedition areas in the Arctic Ocean |
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| Wang Weiqiang, Chen Liqi, Yang Xulin and Huang Xuanbao.Investigations on distributions and fluxes of sea-air CO_2 of the expedition areas in the Arctic Ocean[J].Science in China(Earth Sciences),2003,46(6):569-579. |
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| Authors: | Wang Weiqiang Chen Liqi Yang Xulin and Huang Xuanbao |
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| Abstract: | The distributions and fluxes of sea-air carbon dioxide were investigated the first time based on the firsthand data collected during the First Chinese National Arctic Research Expedition. The results revealed that values of atmospheric CO2 partial pressure (Pa) measured in the summer during the expedition fell between 352 and 370 ((10-6CO2·Air-1, same unit below) with an average value of 358. Particularly, Pa appeared high in the northern sea areas of Poitlay. However, the values of CO2 partial pressure at the surface layer of seawater (Pw) ranged from 98 to 580 with the difference between the low and high being 472. The average value of Pw was 242, which is 116 lower than that of the corresponding Pa. In addition, the distribution of Pw was roughly low in the west and north, but high in the east and south. These phenomena were closely related to plankton, ice, water temperature and circulation of the region. The estimation in carbon fluxes showed that the patterns in distribution were similar through different calculating methods with an exception in eastern sea areas of the region where a weak source of atmospheric CO2 was indicated. Most sea areas of the region were sinks or strong sinks of atmospheric CO2. However, the magnitudes in the fluxes were different. The average values varied from 6.57 (Liss method) to 26.32 mg(CO2·m-2·h-1 (14C method) with a difference of about 4 times between the low and high, which is 2 to 10 times as high as the global average. Compared with the fluxes in the same region obtained using model of Takahashi, Feely et al., the values determined based on Wanninkhof coefficient calculation were 2.38 times as great as those obtained by them. |
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| Keywords: | carbon flux distribution the Arctic Ocean carbon dioxide |
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