Millennial-scale climate variations recorded in Early Pliocene colour reflectance time series from the lacustrine Ptolemais Basin (NW Greece)

Steenbrink, J.; Hoeve, M.L. Kloosterboer-van; Hilgen, F.J.

doi:10.1016/s0921-8181(02)00163-7

Cited by 23 publications

(22 citation statements)

References 57 publications

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“…Such cycles have indeed been described from Pliocene lignite-bearing lacustrine successions of northern Greece (Steenbrink et al, 2003) and platform carbonates of the Great Bahama Bank (Reuning et al, 2006). Sub-Milankovitch cycles have further been described in Upper Jurassic marls (Rodríguez-Tovar and Pardo-Igúzquiza, 2003;Boulila et al, 2010), Triassic marine sections (Zühlke et al, 2003;Wu et al, 2012) and Devonian carbonates (De Vleeschouwer et al, 2012).…”

Section: Introductionmentioning

confidence: 88%

“…In this way, a 5-6 kyr cycle may be explained, but not the present 7-8 kyr cycle. The influence of semi-precession and quarter-precession has been detected in paleoclimatic records both of the Pleistocene as well as older time intervals (e.g., Ferretti et al, 2010;Hernandez-Almeida et al, 2012;Steenbrink et al, 2003;Anderson, 2011). A possible clue to the origin of the 7-8 kyr cycle may come from simulations of sub-Milankovitch climate variability associated with dynamic vegetation, using transient climate model runs (Tuenter et al, 2007).…”

Section: Sub-milankovitch Variations In the Heinrich Frequency Bandmentioning

confidence: 99%

“…Ziegler (2009) and Turner (2004) relate Heinrich events to more frequent El Niño events associated with precession-induced climate variability that originates between the tropics (to explain the sub-Milankovitch periods) and is exported to higher latitudes. Moreover, several modeling studies predict sub-Milankovitch variability through non-linear climate response (e.g., Braun et al, 2005, see also Hagelberg et al, 1994 and references therein), and numerous records (e.g., Steenbrink et al, 2003;Elrick and Hinnov, 1995;Shackleton, 1998, 1999;Zhao et al, 2006) indeed show such a pattern. Thus sub-Milankovitch variability has in particular been found in glacials of the last 2.5 Myr (Heinrich, 1988), although its origin may lie within the tropics (e.g., Hagelberg et al, 1994), suggesting that ice sheets amplify an initial (sub)orbital climate signal.…”

Section: Introductionmentioning

confidence: 98%

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Low-latitude climate variability in the Heinrich frequency band of the Late Cretaceous greenhouse world

2014

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Abstract. Deep marine successions of early Campanian age from DSDP (Deep Sea Drilling Project) site 516F drilled at low paleolatitudes in the South Atlantic reveal distinct subMilankovitch variability in addition to precession, obliquity and eccentricity-related variations. Elemental abundance ratios point to a similar climatic origin for these variations and exclude a quadripartite structure as an explanation for the inferred semi-precession cyclicity in the magnetic susceptibility (MS) signal as observed in the Mediterranean Neogene for precession-related cycles. However, semi-precession cycles as suggested by previous work are likely an artifact reflecting the first harmonic of the precession signal. The sub-Milankovitch variability, especially in MS, is best approximated by a ∼ 7 kyr cycle as shown by spectral analysis and bandpass filtering. The presence of sub-Milankovitch cycles with a period similar to that of Heinrich events of the last glacial cycle is consistent with linking the latter to low-latitude climate change caused by a non-linear response to precession-induced variations in insolation between the tropics.

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Section: Introductionmentioning

confidence: 88%

Section: Sub-milankovitch Variations In the Heinrich Frequency Bandmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Low-latitude climate variability in the Heinrich frequency band of the Late Cretaceous greenhouse world

2014

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“…These subMilankovitch signals are recorded in both marine and terrestrial data from different parts of the world, i.e. at high latitudes in the Atlantic Ocean (Hagelberg et al, 1994), in Spain (Rodríguez-Tovar and Pardo-Igúzquiza, 2003), in the Correspondence to: E. Tuenter (tuenter@knmi.nl) Mediterranean Sea (Larrasoaña et al, 2003;Steenbrink et al, 2003;Becker et al, 2005), in the equatorial Pacific Ocean (Hagelberg et al, 1994), in marine sediments influenced by the strength of the African monsoon (Pokras and Mix, 1987;Hagelberg et al, 1994;McIntyre and Molfino, 1996) and by the strength of the Asian monsoon (Pestiaux et al, 1988;Naidu, 1998).…”

Section: Introductionmentioning

confidence: 99%

Simulating sub-Milankovitch climate variations associated with vegetation dynamics

et al. 2007

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Abstract. Climate variability at sub-Milankovitch periods (between 2 and 15 kyr) is studied in a set of transient simulations with a coupled atmosphere/ocean/vegetation model of intermediate complexity . Focus is on the region influenced by the African and Asian summer monsoon. Pronounced variations at periods of about 10 kyr (Asia and Africa) and about 5 kyr (Asia) are found in the monsoonal runoff in response to the precessional forcing. In the model this is due to the following mechanism. For low summer insolation (precession maximum) precipitation is low and desert expands at the expense of grass, while for high insolation (precession minimum) precipitation is high and the tree fraction increases also reducing the grass fraction. This induces sub-Milankovitch variations in the grass fraction and associated variations in the water holding capacity of the soil. The runoff does not exhibit sub-Milankovitch variability when vegetation is kept fixed. High-latitude vegetation also exhibits sub-Milankovitch variability under both obliquity and precessional forcing. We thus hypothesize that sub-Milankovitch variability can occur due to the dynamic response of the vegetation. However, this mechanism should be further tested with more sophisticated climate/vegetation models.

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“…Proposed mechanisms are those including changes in the equatorial wind system equivalent to long-term changes in El Niño-Southern Oscillation (ENSO) and changes in the intensity of the Inter Tropical Convergence Zone (ITCZ) and monsoon variability (Stott et al, 2002). Moreover, older records show that high-frequency variability is a significant component of high-latitude and low-latitude climate prior to the onset of Northern Hemisphere glaciations (Ortiz et al, 1999;Steenbrink et al, 2003). Although the interpretation of these records is not straightforward they strengthen the idea that high-frequency components are persistent in the EarthTs climate and independent from the large ice sheets of the Late Pleistocene.…”

Section: Introductionmentioning

confidence: 99%

Late Pliocene climate variability on Milankovitch to millennial time scales: A high-resolution study of MIS100 from the Mediterranean

Becker

Lourens

Hilgen

et al. 2005

Palaeogeography, Palaeoclimatology, Palaeoecology

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Astronomically tuned high-resolution climatic proxy records across marine oxygen isotope stage 100 (MIS100) from the Italian Monte San Nicola section and ODP Leg 160 Hole 967A are presented. These records reveal a complex pattern of climate fluctuations on both Milankovitch and sub-Milankovitch timescales that oppose or reinforce one another. Planktonic and benthic foraminiferal d18 O records of San Nicola depict distinct stadial and interstadial phases superimposed on the saw-tooth pattern of this glacial stage. The duration of the stadial-interstadial alterations closely resembles that of the Late Pleistocene Bond cycles. In addition, both isotopic and foraminiferal records of San Nicola reflect rapid changes on timescales comparable to that of the Dansgard-Oeschger (D-O) cycles of the Late Pleistocene. During stadial intervals winter surface cooling and deep convection in the Mediterranean appeared to be more intense, probably as a consequence of very cold winds entering the Mediterranean from the Atlantic or the European continent.The high-frequency climate variability is less clear at Site 967, indicating that the eastern Mediterranean was probably less sensitive to surface water cooling and the influence of the Atlantic climate system. Concomitant changes in the colour reflectance of ODP Site 967 and the calcium carbonate record of San Nicola probably indicate that part of the high-frequency climate variability (3-5 kyr) in the eastern Mediterranean is related to changes in Saharan dust supply. Evidently, enhanced dust deposition in the Mediterranean correlates with the cold intervals of the millennial-scale D-O oscillations suggesting that the Atlantic pressure system may have played a critical role in varying the wind strength and/or aridification of northern Africa. D

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Millennial-scale climate variations recorded in Early Pliocene colour reflectance time series from the lacustrine Ptolemais Basin (NW Greece)

Cited by 23 publications

References 57 publications

Low-latitude climate variability in the Heinrich frequency band of the Late Cretaceous greenhouse world

Low-latitude climate variability in the Heinrich frequency band of the Late Cretaceous greenhouse world

Simulating sub-Milankovitch climate variations associated with vegetation dynamics

Late Pliocene climate variability on Milankovitch to millennial time scales: A high-resolution study of MIS100 from the Mediterranean

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