Journal ArticleDOI
Persistent Solar Influence on North Atlantic Climate During the Holocene
Gerard C. Bond,Bernd Kromer,Juerg Beer,Raimund Muscheler,Michael N. Evans,William J. Showers,Sharon Hoffmann,Rusty Lotti-Bond,Irka Hajdas,Georges Bonani +9 more
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.read more
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Quantitative precipitation estimates for the northeastern Qinghai-Tibetan Plateau over the last 18,000 years
Jianyong Li,J. R. Dodson,J. R. Dodson,Hong Yan,Bo Cheng,Xiaojian Zhang,Qinghai Xu,Jian Ni,Fengyan Lu +8 more
TL;DR: In this article, the authors provided new and numerical reconstructions for annual mean precipitation (PANN) and vegetation history over the last 18,000 years using high-resolution pollen data from Lakes Dalianhai and Qinghai on the northeastern Qinghai-Tibetan Plateau (QTP).
Journal ArticleDOI
Lateglacial-Middle Holocene Stable Isotope Records in Two Coeval Stalagmites from the Bihor Mountains, NW Romania
TL;DR: Oxygen and carbon stable isotope records of two stalagmites from NW Romania provide a continuous climatic record between 14.5-13.6 ka BP and 12.9-12.8 ka BP, respectively as discussed by the authors.
Journal ArticleDOI
Millennial-scale paleoclimate cycles recorded in widespread Palaeozoic deeper water rhythmites of North America
Maya Elrick,Linda A. Hinnov +1 more
TL;DR: In this article, the average duration of individual rhythmite couplets is calculated using spectral analysis (to determine couplet thickness) combined with biostratigraphically calibrated undecompacted average sediment accumulation rates.
Journal ArticleDOI
The 5.2 ka climate event: Evidence from stable isotope and multi-proxy palaeoecological peatland records in Ireland
Thomas P. Roland,T.J. Daley,Chris Caseldine,Dan J. Charman,Chris S. M. Turney,Matthew J. Amesbury,Gareth Thompson,Ewan J. Woodley +7 more
TL;DR: In this paper, the authors report three high-resolution Irish multi-proxy records obtained from ombrotrophic peatlands that have robust chronological frameworks and identify the 5.2-ka event by a sustained decrease in δ18Ocellulose at all three sites, with additional and parallel changes in ǫ13Ccelluloses and palaeoecological (testate amoebae, plant macrofossil and humification) data from two sites in northern Ireland.
Journal ArticleDOI
Solar Arctic-Mediated Climate Variation on Multidecadal to Centennial Timescales: Empirical Evidence, Mechanistic Explanation, and Testable Consequences
TL;DR: In this paper, the authors proposed a mechanistic explanation for the variability in the strength of the Atlantic meridional overturning circulation (MOC) or thermohaline circulation (THC), and the shift and modulation of the Inter-Tropical Convergence Zone (ITCZ) rainbelt and tropical Atlantic ocean conditions.
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
Douglas G. Martinson,Nicklas G Pisias,James D. Hays,John Imbrie,Theodore C. Moore,Nicholas J Shackleton +5 more
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.
Journal ArticleDOI
A Pervasive Millennial-Scale Cycle in North Atlantic Holocene and Glacial Climates
Gerard C. Bond,William J. Showers,Maziet Cheseby,Rusty Lotti,Peter Almasi,Peter B deMenocal,Paul Priore,Heidi Cullen,Irka Hajdas,Georges Bonani +9 more
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.
Journal ArticleDOI
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
Journal ArticleDOI
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.
Journal ArticleDOI
Holocene climatic instability: A prominent, widespread event 8200 yr ago
Richard B. Alley,Paul Andrew Mayewski,Todd Sowers,Minze Stuiver,Kendrick C. Taylor,Peter U. Clark +5 more
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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