气候变化领域集成服务门户(CCPortal): A linkage between Asian dust, dissolved iron and marine export production in the deep ocean

CCPortal

DOI	10.1016/j.atmosenv.2011.04.078
	A linkage between Asian dust, dissolved iron and marine export production in the deep ocean
	Han, Yongxiang; Zhao, Tianliang; Song, Lianchun; Fang, Xiaomin; Yin, Yan; Deng, Zuqin; Wang, Suping; Fan, Shuxian
通讯作者	Han, YX (通讯作者)
发表日期	2011
ISSN	1352-2310
EISSN	1873-2844
起始页码	4291
结束页码	4298
卷号	45 期号:25
英文摘要	Iron-addition experiments have revealed that iron supply exerts controls on biogeochemical cycles in the ocean and ultimately influences the Earth's climate system. The iron hypothesis in its broad outlines has been proved to be correct. However, the hypothesis needs to be verified with an observable biological response to specific dust deposition events. Plankton growth following the Asian dust storm over Ocean Station PAPA (50 degrees N, 145 degrees W) in the North Pacific Ocean in April 2001 was the first supportive evidence of natural aeolian iron inputs to ocean; The data were obtained through the SeaWiFS satellite and robot carbon explorers by Bishop et al. Using the NARCM modeling results in this study, the calculated total dust deposition flux was 35 mg m(-2) per day in PAPA region from the dust storm of 11-13 April, 2001 into 0.0615 mg m(-2) d(-1) (about 1100 nM) soluble iron in the surface layer at Station PAPA. It was enough for about 1100 nM to enhance the efficiency of the marine biological pump and trigger the rapid increase of POC and chlorophyll. The iron fertilization hypothesis therefore is plausible. However, even if this specific dust event can support the iron fertilization hypothesis, long-term observation data are lacking in marine export production and continental dust. In this paper, we also conducted a simple correlation analysis between the diatoms and foraminifera at about 3000 m and 4000 m at two subarctic Pacific stations and the dust aerosol production from China's mainland. The correlation coefficient between marine export production and dust storm frequency in the core area of the dust storms was significantly high, suggesting that aerosols generated by Asian dust storm are the source of iron for organic matter fixation in the North Pacific Ocean. These results suggest that there could be an interlocking chain for the change of atmospheric dust aerosol-soluble iron-marine export production. (C) 2011 Elsevier Ltd. All rights reserved.
关键词	TRANS-PACIFIC TRANSPORT SIMULATED CLIMATOLOGY TIBETAN PLATEAU NORTH PACIFIC MINERAL DUST TIME-SERIES ACE-ASIA FERTILIZATION AEROSOL PHYTOPLANKTON
英文关键词	Marine export production; Dust aerosol; Iron fertilizer effect; Dust deposition flux; North Pacific Ocean
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000293107600020
来源期刊	ATMOSPHERIC ENVIRONMENT
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257937
推荐引用方式 GB/T 7714	Han, Yongxiang,Zhao, Tianliang,Song, Lianchun,et al. A linkage between Asian dust, dissolved iron and marine export production in the deep ocean[J]. 中国科学院青藏高原研究所,2011,45(25).
APA	Han, Yongxiang.,Zhao, Tianliang.,Song, Lianchun.,Fang, Xiaomin.,Yin, Yan.,...&Fan, Shuxian.(2011).A linkage between Asian dust, dissolved iron and marine export production in the deep ocean.ATMOSPHERIC ENVIRONMENT,45(25).
MLA	Han, Yongxiang,et al."A linkage between Asian dust, dissolved iron and marine export production in the deep ocean".ATMOSPHERIC ENVIRONMENT 45.25(2011).