Detection of significant climatic precession variability in early Pleistocene glacial cycles
نویسندگان
چکیده
منابع مشابه
Early Pleistocene glacial cycles and the integrated summer insolation forcing.
Long-term variations in Northern Hemisphere summer insolation are generally thought to control glaciation. But the intensity of summer insolation is primarily controlled by 20,000-year cycles in the precession of the equinoxes, whereas early Pleistocene glacial cycles occur at 40,000-year intervals, matching the period of changes in Earth's obliquity. The resolution of this 40,000-year problem ...
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Introduction Conclusions References
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These changes in the forcing are to small to explain the observed climate variations as simple linear responses. Non-linear amplifications are necessary to account for the glacial cycles. Here an empirical model of the non-linear response is presented. From the model it is possible to assess the role of stochas-tic noise in comparison to the deterministic orbital forcing of the ice ages. The mo...
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Biotic responses to Pleistocene climatic fluctuations have traditionally been analyzed in the context of glacial-interglacial cycles on the scale of 10000-100 000 years. However, emerging evidence indicates that short-term, high-amplitude, climatic 'flickers', close to the limits of the resolving power of the fossil record, occurred within the glacial and interglacial substages. Because species...
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ژورنال
عنوان ژورنال: Earth and Planetary Science Letters
سال: 2020
ISSN: 0012-821X
DOI: 10.1016/j.epsl.2020.116137