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Article
A High‐resolution Atmospheric Dust Record for 1810–2004 A.D. Derived from an Ice Core in Eastern Tien Shan, Central Asia
Journal of Geophysical Research: Atmospheres
  • Wangbin Zhang, Nanjing University
  • Shugui Hou, Nanjing University
  • Yaping Liu, Chinese Academy of Sciences
  • Shuang-Ye Wu, University of Dayton
  • Wenling An, Chinese Academy of Sciences
  • Hongxi Pang, Nanjing University
  • Chaomin Wang, Nanjing University
Document Type
Article
Publication Date
7-1-2017
Abstract

Centennial‐scale, high‐resolution records of atmospheric dust conditions are rare in the arid and semiarid regions of central Asia, limiting our understanding of the regional climate and environmental changes and their potential driving forces. In this paper, we present an annually resolved atmospheric dust record covering the period of 1810–2004 A.D., reconstructed from an ice core retrieved at 4512 m above sea level from the Miaoergou Glacier in the eastern Tien Shan. The time series of dust flux for the past 195 years shows three periods of relatively low values (i.e., 1810–1829 A.D., 1863–1940 A.D., and 1979–2004 A.D.) and two periods of relatively high values (i.e., 1830–1862 A.D. and 1941–1978 A.D.). Spatial correlation analysis suggests possible regional factors controlling the dust flux, including antecedent summer precipitation, spring soil moisture, and near‐surface wind speed. In addition, the Miaoergou dust flux is closely associated with the winter index of the North Atlantic Oscillation (NAO) over the past two centuries, with high (low) dust periods coinciding with the negative (positive) phases of the NAO. The persistent relationship suggests that the NAO may have been a key driver on dust flux change over the arid regions between the Tien Shan and Kunlun Mountains.

Inclusive pages
7505-7518
ISBN/ISSN
2169-897X
Document Version
Published Version
Comments

This document has been made available for download in accordance with the publisher's self-archiving policy.

Permission documentation on file.

DOI: https://doi.org/10.1002/2017JD026699

Publisher
American Geophysical Union
Peer Reviewed
Yes
Citation Information
Wangbin Zhang, Shugui Hou, Yaping Liu, Shuang-Ye Wu, et al.. "A High‐resolution Atmospheric Dust Record for 1810–2004 A.D. Derived from an Ice Core in Eastern Tien Shan, Central Asia" Journal of Geophysical Research: Atmospheres Vol. 122 Iss. 14 (2017)
Available at: http://works.bepress.com/shuang-ye_wu/4/