Contemporary climatic change over the qinghai-xizang plateau and its response to the green-house effect |
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| Authors: | Liu Xiaodong and Zhang Minfeng |
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| Institution: | (1) Lanzhou Institute of Plateau Atmospheric Physics, the Chinese Academy of Sciences, 730000 Lanzhou, P. R. China |
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| Abstract: | The knowledge of contemporary climatic change over the Qinghai-Xizang (Tibet) Plateau (QXP) has been inadequate for a long
time due to lack of enough observational data. In this paper, on the basis of monthly temperature and precipitation data in
1961–1990 from 48 stations on the QXP, the temperature data are extended backward to 1901 with an empirical orthogonal function
(EOF) method, microscopic characteristics of contemporary climatic change over the QXP are analyzed, and the response of the
plateau climate to global warming is discussed in combination with atmospheric general circulation model (GCM) outputs. The
results show that the plateau climate, as a whole, has been warming since the early part of this century, that the precipitation
has generally been increasing during the recent 30 years, and that these climatic trends seem to be related to the enhanced
green-house effect induced by increasing CO2 concentration in the atmosphere.
This work is supported by the National and CAS (the Chinese Academy of Sciences) Tibet Research Project. |
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| Keywords: | Qinghai-Xizang Plateau contemporary climatic change green-house effect empirical orthogonal function atmospheric general circulation CO2 |
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