Obliquity forcing of low-latitude climate
نویسندگان
چکیده
منابع مشابه
Obliquity forcing of low-latitude climate
The influence of obliquity, the tilt of the Earth's rotational axis, on incoming solar radiation at low latitudes is small, yet many tropical and subtropical paleoclimate records reveal a clear obliquity signal. Several mechanisms have been proposed to explain this signal, such as the remote influence of high-latitude glacials, the remote effect of in-5 solation changes at mid-to high latitudes...
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The late Cenozoic climate of East Africa is punctuated by episodes of short, alternating periods of extreme wetness and aridity, superimposed on a regime of subdued moisture availability exhibiting a long-term drying trend. These periods of extreme climate variability appear to correlate with maxima in the 400-thousand-year (kyr) component of the Earth's eccentricity cycle. Prior to 2.7 Ma the ...
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The question of climate at high obliquity is raised in the context of both exoplanet studies (e.g. habitability) and paleoclimates studies (evidence for low-latitude glaciation during the Neoproterozoic and the ‘‘Snowball Earth’’ hypothesis). States of high obliquity, /, are distinctive in that, for / P 54!, the poles receive more solar radiation in the annual mean than the equator, opposite to...
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متن کاملPleistocene glacial variability as a chaotic response to obliquity forcing
The mid-Pleistocene Transition from 40 ky to ∼100 ky glacial cycles is generally characterized as a singular transition attributable to scouring of continental regolith or a long-term decrease in atmospheric CO2 concentrations. Here an alternative hypothesis is suggested, that Pleistocene glacial variability is chaotic and that transitions from 40 ky to ∼100 ky modes of variability occur sponta...
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ژورنال
عنوان ژورنال: Climate of the Past
سال: 2015
ISSN: 1814-9332
DOI: 10.5194/cp-11-1335-2015