The timing of Pleistocene glaciations from a simple multiple-state climate model

Paillard, Didier

doi:10.1038/34891

Cited by 377 publications

(347 citation statements)

References 25 publications

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“…Most hypotheses for the origin of the MPT invoke a response to a long-term cooling, possibly induced by decreasing atmospheric pCO 2 (Raymo, 1997;Paillard, 1998;Berger et al, 1999;Tziperman and Gildor 2003). None of these hypotheses, however, accounts for the geological constraint that the earliest Northern Hemisphere ice-sheets covered a similar or larger area than those that followed the MPT (Boellstorf, 1978;Roy et al, 2004a;Balco et al, 2005).…”

Section: Resultsmentioning

confidence: 99%

“…The cause of the cooling itself is often attributed to an assumed secular decrease in atmospheric pCO 2 (e.g., Raymo, 1997;Mudelsee and Schulz, 1997;Paillard, 1998;Berger et al, 1999). This explanation for the MPT tacitly assumes a known climate sensitivity to atmospheric pCO 2 in order to induce a response at precisely the time of the MPT.…”

Section: Mechanisms To Cause the Mptmentioning

confidence: 99%

“…Most hypotheses for the MPT invoke some change internal to the climate system in response to a long-term cooling (Oerlemans, 1984;Saltzman and Maasch, 1991;Raymo, 1997;Mudelsee and Schulz, 1997;Paillard, 1998;Berger et al, 1999;Tziperman and Gildor, 2003;Rial, 2004). The cause of the cooling itself is often attributed to an assumed secular decrease in atmospheric pCO 2 (e.g., Raymo, 1997;Mudelsee and Schulz, 1997;Paillard, 1998;Berger et al, 1999).…”

Section: Mechanisms To Cause the Mptmentioning

confidence: 99%

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The middle Pleistocene transition: characteristics, mechanisms, and implications for long-term changes in atmospheric pCO2

Clark

Archer

Pollard

et al. 2006

Quaternary Science Reviews

911

777

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Section: Resultsmentioning

confidence: 99%

Section: Mechanisms To Cause the Mptmentioning

confidence: 99%

Section: Mechanisms To Cause the Mptmentioning

confidence: 99%

See 1 more Smart Citation

The middle Pleistocene transition: characteristics, mechanisms, and implications for long-term changes in atmospheric pCO2

Clark

Archer

Pollard

et al. 2006

Quaternary Science Reviews

911

777

View full text Add to dashboard Cite

“…The dominance of eccentricity might be explained by a mechanism somewhat similar to Paillard's model (Paillard, 1998), that was designed to explain the late Pleistocene ice ages. The 100-kyr cycles in the middle to late Pleistocene Megalopolis section could Ð because of their deposition during the global ice age regime Ð be related to the glacial-interglacial cycles.…”

Section: Possible Explanationsmentioning

confidence: 99%

“…The spectral peaks at the eccentricity-frequencies of their truncated insolation curve are comparable to those in oxygenisotope records, demonstrating that eccentricity can indeed cause strong 100 and 400-kyr lithological cycles. Another type of non-linear response is used in Paillard's ice-age model with multiple steady states and prede®ned insolation-related rules (Paillard, 1998). This model can successfully simulate late Pleistocene d 18 O time series, which occurred approximately every 100 kyr.…”

Section: Introductionmentioning

confidence: 99%

Orbital forcing in Pliocene–Pleistocene Mediterranean lacustrine deposits: dominant expression of eccentricity versus precession

Vugt

Langereis

Hilgen

2001

Palaeogeography, Palaeoclimatology, Palaeoecology

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Milankovitch forcing of climate is expressed in the sedimentary record as lithological cycles that can have one or more of four typical periods related to precession (21 kyr), obliquity (41 kyr) and eccentricity (100 and 400 kyr). In several Mediterranean continental successions, striking differences in the expression of particularly precession and eccentricity appear. We present the results of an additional lower Pliocene lacustrine succession from Lupoaia (southern Romania), and compare the cyclic expression in this lignite±siliciclastic basin in detail with the time-equivalent lignite±carbonate basin of Ptolemais (northern Greece), the middle Pleistocene lignite±siliciclastic basin of Megalopolis (southern Greece) and the Miocene carbonate±clay basin of Orera (north eastern Spain). It appears that carbonate basins dominantly express precession, while siliciclastic basins dominantly express eccentricity in their lithological cycles. This can be explained by a more linear response to insolation forcing in carbonate basins than in siliciclastic basins. Alternatively, it can be explained by the low amplitude of 100-kyr eccentricity at the times the carbonate sections were deposited. This reduced 100-kyr amplitude was caused by minima in the 2.35 Myr eccentricity cycle, that co-occurred with the deposition in both carbonate basins. Finally, the expression of 100-kyr eccentricity appears to be independent of glacial cyclicity. q

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Global constraints on net primary production and inorganic carbon supply during glacial and interglacial cycles

et al. 2013

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.[1] Relaxation-type models have good skill at reproducing glacial-interglacial transitions in climatic variables. Here we propose a simple two-box and two-state relaxation-type model for the upper ocean (surface and permanent thermocline layers) where dissolved inorganic carbon/nutrients are supplied by the deep ocean and through remineralization within the upper ocean. The model is tuned using genetic algorithms to simulate the atmospheric CO 2 time series for the last four glacial-interglacial cycles. The fit to the data is very good, with correlations above 0.8, as the upper ocean responds to shifts in (1) the intensity of the meridional overturning circulation, from off to on during the glacial-interglacial transition, and (2) the size and sign of net primary production, with respiration greatly exceeding primary production during interglacial periods and production larger than respiration during the glacial phase. The glacial-interglacial transitions are interpreted as shifts between two distinct metabolic states of the Earth system, with high/low supply of dissolved inorganic carbon and nutrients to the productive upper ocean during interglacial/glacial periods.Citation: Pelegrı´, J. L., P. De La Fuente, R. Olivella, and A. Garcı´a-Olivares (2013), Global constraints on net primary production and inorganic carbon supply during glacial and interglacial cycles, Paleoceanography, 28, 713-725,

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The timing of Pleistocene glaciations from a simple multiple-state climate model

Cited by 377 publications

References 25 publications

The middle Pleistocene transition: characteristics, mechanisms, and implications for long-term changes in atmospheric pCO2

The middle Pleistocene transition: characteristics, mechanisms, and implications for long-term changes in atmospheric pCO2

Orbital forcing in Pliocene–Pleistocene Mediterranean lacustrine deposits: dominant expression of eccentricity versus precession

Global constraints on net primary production and inorganic carbon supply during glacial and interglacial cycles

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