Skip to main content
Article
Reduction in Northward Incursions of the South Asian Monsoon Since ~1400 AD Inferred from a Mt. Everest Ice Core
Geophysical Research Letters
  • Susan D. Kaspari
  • Paul Andrew Mayewski, University of Maine - Main
  • Shichang Kang
  • Sharon B. Sneed
  • Shugui Hou
  • Roger Hooke, University of Maine - Main
  • Karl J. Kreutz, University of Maine - Main
  • D. Introne
  • M. Handley
  • Kirk A. Maasch, University of Maine - Main
  • Dahe Qin
  • J. Ren
Document Type
Article
Rights and Access Note
This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s).
Publication Date
8-16-2007
Publication Number
L16701
Disciplines
Abstract/ Summary

A highly resolved Mt. Everest ice core reveals a decrease in marine and increase in continental air masses related to relatively high summer surface pressure over Mongolia, and reduction in northward incursions of the summer South Asian monsoon since similar to 1400 AD. Previously published proxy records from lower sites south of the Himalayas indicate strengthening of the monsoon since this time. These regional differences are consistent with a south north seesaw in convective activity in the Asian monsoon region, and reflect a southward shift in the mean summer position of the monsoon trough since similar to 1400 AD. The change in monsoonal circulation at 1400 AD is synchronous with a reduction in solar irradiance and the onset of the LIA. This demonstrates a hemispheric scale circulation reorganization at this time, and the potential for future large shifts in monsoonal circulation.

Citation/Publisher Attribution
Kaspari, S, Mayewski, P, Kang, S, Sneed, S, Hou, S, Hooke, R, Kreutz, K, et al., 2007, Reduction in Northward Incursions of the South Asian Monsoon Since Approximate to 1400 Ad Inferred from a Mt. Everest Ice Core: Geophysical Research Letters, v. 34, L16701. To view the published open abstract, go to http://dx.doi.org and enter the DOI.
Publisher Statement
© Copyright 2007 American Geophysical Union
DOI
10.1029/2007GL030440
Version
publisher's version of the published document
Citation Information
Susan D. Kaspari, Paul Andrew Mayewski, Shichang Kang, Sharon B. Sneed, et al.. "Reduction in Northward Incursions of the South Asian Monsoon Since ~1400 AD Inferred from a Mt. Everest Ice Core" Geophysical Research Letters Vol. 34 Iss. 16 (2007)
Available at: http://works.bepress.com/roger_hooke/6/