Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL090476 |
Atmospheric transport of North African dust‐bearing supermicron freshwater diatoms to South America: implications for iron transport to the equatorial North Atlantic Ocean | |
Anne E. Barkley; Nicole E. Olson; Joseph M. Prospero; Alexandre Gatineau; Kathy Panechou; Nancy G. Maynard; Patricia Blackwelder; Swarup China; Andrew P. Ault; Cassandra J. Gaston | |
2021-02-01 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | The equatorial North Atlantic Ocean (NAO) is a nutrient‐limited ecosystem that relies on the deposition of long‐range transported iron (Fe)‐containing aerosols to stimulate primary productivity. Using microscopy, we characterized supermicron and super‐coarse mode African aerosols transported to the western NAO in boreal winter/spring. We detected three particle types including African dust, primary biological aerosol particles, and freshwater diatoms (FDs). FDs contained 4% Fe by weight due to surficial dust inclusions that may be susceptible to chemical processing and dissolution. FDs were typically larger than dust particles and comprised 38% of particles between 10 and 18 μm in diameter. The low density, high surface‐area‐to‐volume ratio, and large aspect ratios of FD particles suggest a mechanism by which they can be carried great distances aloft. These same properties likely increase the residence time of FDs in surface waters thereby increasing the time for Fe dissolution and their potential impact on marine biogeochemical cycles. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/313845 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Anne E. Barkley,Nicole E. Olson,Joseph M. Prospero,等. Atmospheric transport of North African dust‐bearing supermicron freshwater diatoms to South America: implications for iron transport to the equatorial North Atlantic Ocean[J]. Geophysical Research Letters,2021. |
APA | Anne E. Barkley.,Nicole E. Olson.,Joseph M. Prospero.,Alexandre Gatineau.,Kathy Panechou.,...&Cassandra J. Gaston.(2021).Atmospheric transport of North African dust‐bearing supermicron freshwater diatoms to South America: implications for iron transport to the equatorial North Atlantic Ocean.Geophysical Research Letters. |
MLA | Anne E. Barkley,et al."Atmospheric transport of North African dust‐bearing supermicron freshwater diatoms to South America: implications for iron transport to the equatorial North Atlantic Ocean".Geophysical Research Letters (2021). |
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