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Dust storm activity over the Tibetan Plateau recorded by a shallow ice core from the north slope of Mt. Qomolangma (Everest), Tibet‐Himal region
Author(s) -
Xu Jianzhong,
Hou Shugui,
Qin Dahe,
Kang Shichang,
Ren Jiawen,
Ming Jing
Publication year - 2007
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2007gl030853
Subject(s) - plateau (mathematics) , geology , storm , ice core , north atlantic oscillation , glacier , dust storm , climatology , physical geography , atmospheric sciences , geomorphology , oceanography , geography , mathematical analysis , mathematics
Based on a 39.8 m ice core drilled at the East Rongbuk Glacier (27°59′N, 86°55′E 6518 m a.s.l,), north slope of Mt. Qomolangma (Everest), central Himalaya, the changes of dust storm over the Tibetan Plateau (TP) recorded by insoluble particle and its possible connection with the winter (JFM) North Atlantic Oscillation (NAO) are investigated. The results show that the level of dust storm activity exhibits a significant decreasing trend during the past ∼50 years. This may be attributed, at least partly, to a decrease in wind speed over the TP and its surrounding regions. The normalized time series of the winter NAO index shows a significant inverse correlation with the mass concentration of insoluble particle implying a possible connection between the winter NAO and the dust storm activity over the TP.