Anthropogenic Asian aerosols provide Fe to the North Pacific Ocean

doi:10.1073/pnas.2010315117

GSTDTAP > 地球科学

DOI	10.1073/pnas.2010315117
	Anthropogenic Asian aerosols provide Fe to the North Pacific Ocean
	Paulina Pinedo-González; Nicholas J. Hawco; Randelle M. Bundy; E. Virginia Armbrust; Michael J. Follows; B. B. Cael; Angelicque E. White; Sara Ferrón; David M. Karl; Seth G. John
	2020-10-22
发表期刊	Proceedings of the National Academy of Science
出版年	2020
英文摘要	Fossil-fuel emissions may impact phytoplankton primary productivity and carbon cycling by supplying bioavailable Fe to remote areas of the ocean via atmospheric aerosols. However, this pathway has not been confirmed by field observations of anthropogenic Fe in seawater. Here we present high-resolution trace-metal concentrations across the North Pacific Ocean (158°W from 25°to 42°N). A dissolved Fe maximum was observed around 35°N, coincident with high dissolved Pb and Pb isotope ratios matching Asian industrial sources and confirming recent aerosol deposition. Iron-stable isotopes reveal in situ evidence of anthropogenic Fe in seawater, with low δ⁵⁶Fe (−0.23‰ > δ⁵⁶Fe > −0.65‰) observed in the region that is most influenced by aerosol deposition. An isotope mass balance suggests that anthropogenic Fe contributes 21–59% of dissolved Fe measured between 35° and 40°N. Thus, anthropogenic aerosol Fe is likely to be an important Fe source to the North Pacific Ocean.
领域	地球科学
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/300239
专题	地球科学
推荐引用方式 GB/T 7714	Paulina Pinedo-González,Nicholas J. Hawco,Randelle M. Bundy,et al. Anthropogenic Asian aerosols provide Fe to the North Pacific Ocean[J]. Proceedings of the National Academy of Science,2020.
APA	Paulina Pinedo-González.,Nicholas J. Hawco.,Randelle M. Bundy.,E. Virginia Armbrust.,Michael J. Follows.,...&Seth G. John.(2020).Anthropogenic Asian aerosols provide Fe to the North Pacific Ocean.Proceedings of the National Academy of Science.
MLA	Paulina Pinedo-González,et al."Anthropogenic Asian aerosols provide Fe to the North Pacific Ocean".Proceedings of the National Academy of Science (2020).