气候变化领域集成服务门户(CCPortal): 20th-Century doubling in dust archived in an Antarctic Peninsula ice core parallels climate change and desertification in South America

CCPortal

DOI	10.1073/pnas.0607657104
	20th-Century doubling in dust archived in an Antarctic Peninsula ice core parallels climate change and desertification in South America
	McConnell J.R.; Aristarain A.J.; Banta J.R.; Edwards P.R.; Simões J.C.
发表日期	2007
ISSN	0027-8424
起始页码	5743
结束页码	5748
卷号	104 期号:14
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.
英文关键词	Aluminosilicate dust; Global warming; Human impacts; Patagonia; Radiative transfer
语种	英语
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
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159183
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
推荐引用方式 GB/T 7714	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],2007,104(14).
APA	McConnell J.R.,Aristarain A.J.,Banta J.R.,Edwards P.R.,&Simões J.C..(2007).20th-Century doubling in dust archived in an Antarctic Peninsula ice core parallels climate change and desertification in South America.Proceedings of the National Academy of Sciences of the United States of America,104(14).
MLA	McConnell J.R.,et al."20th-Century doubling in dust archived in an Antarctic Peninsula ice core parallels climate change and desertification in South America".Proceedings of the National Academy of Sciences of the United States of America 104.14(2007).