What is the timing of orbital-scale monsoon changes?

被引:91
作者
Ruddiman, WF [1 ]
机构
[1] Univ Virginia, Dept Environm Sci, Charlottesville, VA 22904 USA
关键词
D O I
10.1016/j.quascirev.2006.02.004
中图分类号
P9 [自然地理学];
学科分类号
0705 ; 070501 ;
摘要
A major (but little noted) divergence of opinion has developed among climate scientists over the orbital-scale periodicity and phasing of tropical monsoon variations. Kutzbach (1981. Monsoon climate of the early Holocene: climate experiment with Earth's orbital parameters for 9000 years ago. Science 214, 59-6 1) proposed that monsoons are driven by northern summer insolation at the precession period, but Clemens and Prell (1990. Late Pleistocene variability of Arabian Sea Summer monsoon winds and continental aridity: eolian records from the lithogenic component of deep-sea sediments. Paleoceanography 5, 109-145; 2003. A 350,000-year summer-monsoon multi-proxy stack from the Owen Ridge, Northern Arabian Sea. Marine Geology 201, 35-51) inferred a more complicated response tied to latent heat transfer from the Southern Hemisphere. Because tropical monsoons affect climate over a vast area, resolving this divergence is an important task for the climate Community. The purpose of this note is to highlight definitive evidence from high-resolution dating of speleothem calcite that provides unambiguous support for the Kutzbach hypothesis. (C) 2006 Elsevier Ltd. All rights reserved.
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页码:657 / 658
页数:2
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