干旱区生态环境知识资源中心(Arid): Did Modern Precipitation Drivers Influence Centennial Trends in the Highlands of the Atacama Desert During the Most Recent Millennium?

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DOI	10.1029/2021GL095927
	Did Modern Precipitation Drivers Influence Centennial Trends in the Highlands of the Atacama Desert During the Most Recent Millennium?
	Jara, Ignacio A.; Maldonado, Antonio; de Porras, Maria Eugenia
通讯作者	Jara, IA (corresponding author)，Ctr Estudios Avanzados Zonas Aridas CEAZA, La Serena, Chile.
来源期刊	GEOPHYSICAL RESEARCH LETTERS
ISSN	0094-8276
EISSN	1944-8007
出版年	2022
卷号	49 期号:1
英文摘要	Although present-day precipitation variability in the southern Altiplano and adjacent Andean margins (15-25 degrees S) is well understood, past drivers and mechanisms remain little-explored. We analyzed the pollen assemblages of 31 fossil rodent middens to reconstruct precipitation change during the most recent millennium in the highlands of the Atacama Desert (22 degrees S), on the western foothills of the Altiplano. Variations in low and high elevation pollen types reveal reduced (increased) precipitation between 930 and 550 BP (510 and 440 BP) (BP = before present; taken as Common Era 1950). Variable pollen assemblages prevailed from 390 to 90 BP, followed by a drying trend that persists until present times. Similarities with proxy records from the Altiplano, the tropical Andes and the equatorial Pacific suggest that centennial-scale wet/dry phases in the Atacama highlands were associated with changes in the strength of the South American monsoon system, most likely influenced by changes akin to modern El Nino Southern Oscillation variability.
英文关键词	palynology South America paleoclimatology Climate dynamics precipitation ENSO
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000743989800048
WOS关键词	AMERICAN SUMMER MONSOON ; CENTRAL ANDES ; CLIMATE VARIABILITY ; NORTHERN CHILE ; ICE-AGE ; ENVIRONMENTAL DYNAMICS ; RAINFALL VARIABILITY ; SOUTHERN ALTIPLANO ; TROPICAL PACIFIC ; RECORD
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376551
作者单位	[Jara, Ignacio A.; Maldonado, Antonio] Ctr Estudios Avanzados Zonas Aridas CEAZA, La Serena, Chile; [Maldonado, Antonio] Univ La Serena, Inst Invest Multidisciplinario Ciencia & Tecnol, La Serena, Chile; [Maldonado, Antonio] Univ Catolica Norte, Dept Biol Marina, Coquimbo, Chile; [de Porras, Maria Eugenia] CCT Mendoza CONICET, Inst Argentino Nivol Glaciol & Ciencias Ambiental, Av Ruiz Leal S-N, Mendoza, Argentina
推荐引用方式 GB/T 7714	Jara, Ignacio A.,Maldonado, Antonio,de Porras, Maria Eugenia. Did Modern Precipitation Drivers Influence Centennial Trends in the Highlands of the Atacama Desert During the Most Recent Millennium?[J],2022,49(1).
APA	Jara, Ignacio A.,Maldonado, Antonio,&de Porras, Maria Eugenia.(2022).Did Modern Precipitation Drivers Influence Centennial Trends in the Highlands of the Atacama Desert During the Most Recent Millennium?.GEOPHYSICAL RESEARCH LETTERS,49(1).
MLA	Jara, Ignacio A.,et al."Did Modern Precipitation Drivers Influence Centennial Trends in the Highlands of the Atacama Desert During the Most Recent Millennium?".GEOPHYSICAL RESEARCH LETTERS 49.1(2022).