globalchange  > 气候变化与战略
DOI: 10.1073/pnas.0607657104
论文题名:
20th-Century doubling in dust archived in an Antarctic Peninsula ice core parallels climate change and desertification in South America
作者: McConnell J.R.; Aristarain A.J.; Banta J.R.; Edwards P.R.; Simões J.C.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2007
卷: 104, 期:14
起始页码: 5743
结束页码: 5748
语种: 英语
英文关键词: Aluminosilicate dust ; Global warming ; Human impacts ; Patagonia ; Radiative transfer
Scopus关键词: aluminum ; carbon ; ice ; silicate ; ice ; air temperature ; Antarctica ; Argentina ; article ; atmospheric deposition ; climate change ; cloud ; desertification ; dust ; glacier ; greenhouse effect ; humidity ; priority journal ; sea ; South Africa ; biodiversity ; climate ; desert climate ; dust ; South America ; Antarctic Regions ; Biodiversity ; Climate ; Desert Climate ; Dust ; Ice ; South America
英文摘要: Crustal dust in the atmosphere impacts Earth's radiative forcing directly by modifying the radiation budget and affecting cloud nucleation and optical properties, and indirectly through ocean fertilization, which alters carbon sequestration. Increased dust in the atmosphere has been linked to decreased global air temperature in past ice core studies of glacial to interglacial transitions. We present a continuous ice core record of aluminum deposition during recent centuries in the northern Antarctic Peninsula, the most rapidly warming region of the Southern Hemisphere; such a record has not been reported previously. This record shows that aluminosilicate dust deposition more than doubled during the 20th century, coincident with the ≈1°C Southern Hemisphere warming: a pattern in parallel with increasing air temperatures, decreasing relative humidity, and widespread desertification in Patagonia and northern Argentina. These results have far-reaching implications for understanding the forces driving dust generation and impacts of changing dust levels on climate both in the recent past and future. © 2007 by The National Academy of Sciences of the USA.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162472
Appears in Collections:气候变化与战略

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作者单位: McConnell, J.R., Desert Research Institute, Nevada System of Higher Education, Reno, NV 89512, United States; Aristarain, A.J., Laboratorio de Estratigrafía Glaciar Y Geoquímica del Agua Y de la Nieve, Instituto Antártico Argentino, Centro Regional de Investigaciones Cientifícas Y Teconológicas, 5500 Mendoza, Argentina; Banta, J.R., Desert Research Institute, Nevada System of Higher Education, Reno, NV 89512, United States; Edwards, P.R., Desert Research Institute, Nevada System of Higher Education, Reno, NV 89512, United States; Simões, J.C., Núcleo de Pesquisas Antárctica e Climáticas, Universidade Federal do Rio Grande do Sul, CEP 90040-060 Porto Alegre, Brazil

Recommended Citation:
McConnell J.R.,Aristarain A.J.,Banta J.R.,et al. 20th-Century doubling in dust archived in an Antarctic Peninsula ice core parallels climate change and desertification in South America[J]. Proceedings of the National Academy of Sciences of the United States of America,2007-01-01,104(14)
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