Late Holocene climate reorganisation and the North American Monsoon

Jones, Matthew D.; Metcalfe, Sarah E.; Davies, Sarah J.; Noren, Anders

Abstract

The North America 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 ~6ka, from an inwash record from the Laguna de Juanacatlán, 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.

Citation

Jones, M. D., Metcalfe, S. E., Davies, S. J., & Noren, A. (2015). Late Holocene climate reorganisation and the North American Monsoon. Quaternary Science Reviews, 124, Article 290-295. https://doi.org/10.1016/j.quascirev.2015.07.004

• Journal Article Type: Article
• Acceptance Date: Jul 2, 2015
• Online Publication Date: Jul 17, 2015
• Publication Date: Sep 15, 2015
• Deposit Date: Nov 17, 2015
• Publicly Available Date: Nov 17, 2015
• Journal: Quaternary Science Reviews
• Print ISSN: 0277-3791
• Electronic ISSN: 1873-457X
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 124
• Article Number: 290-295
• DOI: https://doi.org/10.1016/j.quascirev.2015.07.004
• Keywords: Mexico, North American Monsoon, Holocene, XRF scanning, ENSO, PDO, AMO
• Public URL: https://nottingham-repository.worktribe.com/output/761244
• Publisher URL: http://www.sciencedirect.com/science/article/pii/S0277379115300433
• Contract Date: Nov 17, 2015