A 108.83-m ice core record of atmospheric dust deposition at Mt. Qomolangma (Everest), Central Himalaya

The central Himalaya can be regarded as an ideal site for developing a long-term ice core dust record to reflect the environmental signals from regional to semi-hemispheric scales. Here we present a dust record from segments of a 108.83-m ice core recovered from the East Rongbuk (ER) Glacier (27°59′...

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Bibliographic Details
Published in:Quaternary Research
Main Authors: Xu, J, Hou, S, Qin, D, Kaspari, S, Mayewski, PA, Petit, JR, Kang, S, Ren, J, Chappellaz, J, Hong, S., DELMONTE, BARBARA
Other Authors: Mayewski, P, Petit, J, Delmonte, B, Hong, S
Format: Article in Journal/Newspaper
Language:English
Published: Academic Press 2010
Subjects:
ice cores
dust
Everest
atmospheric circulation
GEO/04 - GEOGRAFIA FISICA E GEOMORFOLOGIA
ice core
Online Access:http://hdl.handle.net/10281/9035
https://doi.org/10.1016/j.yqres.2009.09.005
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Summary:The central Himalaya can be regarded as an ideal site for developing a long-term ice core dust record to reflect the environmental signals from regional to semi-hemispheric scales. Here we present a dust record from segments of a 108.83-m ice core recovered from the East Rongbuk (ER) Glacier (27°59′N, 86°55′E; 6518 m a.s.l.) on the northeast slope of Mt. Qomolangma (Everest) in the central Himalaya, covering the period AD 600-1960. Due to rapidly layer thinning and coarse sampling, we primarily discuss the changes in the dust record since AD 1500 in this paper. Results show a significant positive relationship between the dust concentration and reconstructed air temperatures during this period, suggesting a likely cold-humid and warm-dry climatic pattern in the dust source regions, namely Central Asia. This is associated with the variability in the strength of the westerlies and its corresponding precipitation. © 2009 University of Washington.

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