Late Holocene climate reorganisation and the North American Monsoon

QUATERNARY SCIENCE REVIEWS

卷:124

Article

Jones, Matthew D.¹  Metcalfe, Sarah E.¹  Davies, Sarah J.²  Noren, Anders³ 

[1] Univ Nottingham, Sch Geog, Nottingham NG7 2RD, England

[2] Aberystwyth Univ, Dept Geog & Earth Sci, Aberystwyth SY23 3DB, Dyfed, Wales

[3] Univ Minnesota, LRC, Minneapolis, MN 55455 USA

关键词: Mexico;    North American Monsoon;    Holocene;    XRF scanning;    ENSO;    PDO;    AMO;   

DOI  :  10.1016/j.quascirev.2015.07.004

来源: Elsevier

【 摘 要 】

The North American Monsoon (NAM) provides the majority of rainfall for central and northern Mexico as well as parts of the south west USA. The controls over the strength of the NAM in a given year are complex, and include both Pacific and Atlantic systems. We present here an annually resolved proxy reconstruction of NAM rainfall variability over the last similar to 6 ka, from an inwash record from the Laguna de juanacatlan, Mexico. This high resolution, exceptionally well dated record allows changes in the NAM through the latter half of the Holocene to be investigated in both time and space domains, improving our understanding of the controls on the system. Our analysis shows a shift in conditions between c. 4 and 3 ka BP, after which clear ENSO/PDO type forcing patterns are evident. (C) 2015 Elsevier Ltd. All rights reserved.

【 授权许可】

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