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Journal ArticleDOI

Persistent Solar Influence on North Atlantic Climate During the Holocene

TLDR
A solar forcing mechanism therefore may underlie at least the Holocene segment of the North Atlantic's “1500-year” cycle, potentially providing an additional mechanism for amplifying the solar signals and transmitting them globally.
Abstract
Surface winds and surface ocean hydrography in the subpolar North Atlantic appear to have been influenced by variations in solar output through the entire Holocene. The evidence comes from a close correlation between inferred changes in production rates of the cosmogenic nuclides carbon-14 and beryllium-10 and centennial to millennial time scale changes in proxies of drift ice measured in deep-sea sediment cores. A solar forcing mechanism therefore may underlie at least the Holocene segment of the North Atlantic's "1500-year" cycle. The surface hydrographic changes may have affected production of North Atlantic Deep Water, potentially providing an additional mechanism for amplifying the solar signals and transmitting them globally.

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Diatom-derived SSTs (Td′ ratio) indicate warm seas off Japan during the middle Holocene (8.2–3.3 kyr BP)

TL;DR: In this paper, a regression analysis was performed between the ratio of warm- and cold-water diatoms (Td′ ratio) in 123 surface sediment samples in the northwest Pacific Ocean and the mean annual sea surface temperatures (SSTs) (°C) at the core sites, in order to calibrate this proxy for paleo-temperatures.
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An 8700 year paleoclimate reconstruction from the southern Maya lowlands

TL;DR: A sediment core from Lago Puerto Arturo, a closed basin lake in northern Peten, Guatemala, has provided an ∼8700-cal-year record of climate change and human activity in the southern Maya lowlands as mentioned in this paper.
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Intrinsic limits to predictability of abrupt regional climate change in IPCC SRES scenarios

TL;DR: In this article, the authors used an ensemble climate-model experiment to explore the timing and nature of an abrupt regional climate change within the 21st century, and found that close to the threshold the evolution of the system becomes sensitive to small perturbations.
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Timing and progression of the Last Interglacial derived from a high alpine stalagmite

TL;DR: In this article, a stalagmite from Spannagel Cave in the Austrian Alps provides information about the timing and progression of the last interglacial climate, and two distinct growth intervals (warm climate) from ∼130.7 thousand years (ka) before the present to 130.0 ka and from ∼125.7 ka to 118.2 ka, the latter containing two periods of ceased stalagatemite growth (colder climate) at around 123.8 ka and 120.5 ka.
References
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Journal ArticleDOI

Age dating and the orbital theory of the ice ages: Development of a high-resolution 0 to 300,000-year chronostratigraphy

TL;DR: Using the concept of "orbital tuning", a continuous, high-resolution deep-sea chronostratigraphy has been developed spanning the last 300,000 yr as mentioned in this paper.
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A Pervasive Millennial-Scale Cycle in North Atlantic Holocene and Glacial Climates

TL;DR: In this paper, the North Atlantic deep sea cores reveal that abrupt shifts punctuated what is conventionally thought to have been a relatively stable Holocene climate, and they make up a series of climate shifts with a cyclicity close to 1470 ± 500 years, which is the most recent manifestation of a pervasive millennial-scale climate cycle operating independently of the glacial-interglacial climate state.
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Revised carbonate-water isotopic temperature scale

TL;DR: The relationship between temperature and O(18) content relative to that for a Cretaceous belemnite of the Pee Dee formation previously reported (Epstein, Buchsbaum, Lowenstam, and Urey, 1951) has been re-determined using modified procedures for removing organic matter from shells, and is found to be 16.5 - 4.3 δ + 0.14 δ^2
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Macintosh Program performs time‐series analysis

TL;DR: A Macintosh computer program that can perform many time-series analysis procedures is now available on the Internet free of charge, originally designed for paleoclimatic time series.
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Holocene climatic instability: A prominent, widespread event 8200 yr ago

TL;DR: The most prominent Holocene climatic event in Greenland ice-core proxies, with approximately half the amplitude of the Younger Dryas, occurred ∼8000 to 8400 yr ago.
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