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.

Xu, J., Hou, S., Qin, D., Kaspari, S., Mayewski, P., Petit, J., et al. (2010). A 108.83-m ice core record of atmospheric dust deposition at Mt. Qomolangma (Everest), Central Himalaya. QUATERNARY RESEARCH, 73(1), 33-38 [10.1016/j.yqres.2009.09.005].

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

DELMONTE, BARBARA;
2010

Abstract

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.
Articolo in rivista - Articolo scientifico
ice cores, dust, Everest, atmospheric circulation
English
33
38
6
Xu, J., Hou, S., Qin, D., Kaspari, S., Mayewski, P., Petit, J., et al. (2010). A 108.83-m ice core record of atmospheric dust deposition at Mt. Qomolangma (Everest), Central Himalaya. QUATERNARY RESEARCH, 73(1), 33-38 [10.1016/j.yqres.2009.09.005].
Xu, J; Hou, S; Qin, D; Kaspari, S; Mayewski, P; Petit, J; Delmonte, B; Kang, S; Ren, J; Chappellaz, J; Hong, S
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/9035
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