A Pervasive Millennial-Scale Cycle in North Atlantic Holocene and Glacial Climates

Evidence from North Atlantic deep sea cores reveals that abrupt shifts punctuated what is conventionally thought to have been a relatively stable Holocene climate. During each of these episodes, cool, ice-bearing waters from north of Iceland were advected as far south as the latitude of Britain. At about the same times, the atmospheric circulation above Greenland changed abruptly. Pacings of the Holocene events and of abrupt climate shifts during the last glaciation are statistically the same; together, they make up a series of climate shifts with a cyclicity close to 1470 ± 500 years. The Holocene events, therefore, appear to be the most recent manifestation of a pervasive millennial-scale climate cycle operating independently of the glacial-interglacial climate state. Amplification of the cycle during the last glaciation may have been linked to the North Atlantic's thermohaline circulation.

[1]  J. Andrews.  Late Quaternary Palaeoceanography of the North Atlantic Margins , 1996 .

[2]  Michael Ghil,et al.  High‐frequency paleovariability in climate and CO2 levels from Vostok Ice Core Records , 1991 .

[3]  J. Andrews,et al.  A Heinrich‐like event, H‐0 (DC‐0): Source(s) for detrital carbonate in the North Atlantic during the Younger Dryas Chronozone , 1995 .

[4]  Edward A. Boyle,et al.  North Atlantic thermohaline circulation during the past 20,000 years linked to high-latitude surface temperature , 1987, Nature.

[5]  Glenn A. Jones,et al.  The marine record of deglaciation from the continental margin off Nova Scotia , 1995 .

[6]  E. Jansen,et al.  Eemian and Early Weichselian (140–60 ka) Paleoceanography and paleoclimate in the Nordic Seas with comparisons to Holocene conditions , 1997 .

[7]  E. Brook,et al.  Rapid Variations in Atmospheric Methane Concentration During the Past 110,000 Years , 1996, Science.

[8]  S. Lehman,et al.  Sudden changes in North Atlantic circulation during the last deglaciation , 1992, Nature.

[9]  J. Imbrie,et al.  Oxygen and carbon isotope record of East Pacific core V19-30: implications for the formation of deep water in the late Pleistocene North Atlantic , 1983 .

[10]  R. G. Platt.  SMITHSONIAN INSTITUTION. Volcanoes of the World. Simkin, L. Siebert, L. McClelland, D. Bridge, C. Newhall and J. H. Latter. Hutchinson Ross Publishing Company, Stroudsburg, Pennsylvania. Pp viii + [2] + 232. , 1986 .

[11]  L. Keigwin,et al.  The Little Ice Age and Medieval Warm Period in the Sargasso Sea , 1996, Science.

[12]  Wallace S. Broecker,et al.  Massive iceberg discharges as triggers for global climate change , 1994, Nature.

[13]  Samuel Epstein,et al.  REVISED CARBONATE-WATER ISOTOPIC TEMPERATURE SCALE , 1953 .

[14]  The Little Ice Age , 1989 .

[15]  S. Rahmstorf.  Bifurcations of the Atlantic thermohaline circulation in response to changes in the hydrological cycle , 1995, Nature.

[16]  S. Lehman,et al.  Marine core evidence for reduced deep water production during Termination II followed by a relatively stable substage 5e (Eemian) , 1997 .

[17]  L. D. Keigwin,et al.  Western North Atlantic evidence for millennial-scale changes in ocean circulation and climate , 1994 .

[18]  E. Tziperman.  Inherently unstable climate behaviour due to weak thermohaline ocean circulation , 1997, Nature.

[19]  R. Alley,et al.  Holocene climatic instability: A prominent, widespread event 8200 yr ago , 1997 .

[20]  G. Denton,et al.  Holocene Climatic Variations—Their Pattern and Possible Cause , 1973, Quaternary Research.

[21]  P. Kroopnick.  The distribution of13C in the Atlantic Ocean , 1980 .

[22]  S. Manabe,et al.  Coupled ocean‐atmosphere model response to freshwater input: Comparison to Younger Dryas Event , 1997 .

[23]  J. Duplessy,et al.  The North Atlantic atmosphere-sea surface 14C gradient during the Younger Dryas climatic event , 1994 .

[24]  M. Mccartney.  Recirculating components to the deep boundary current of the northern North Atlantic. , 1992 .

[25]  G. Denton,et al.  Interhemispheric Correlation of Late Pleistocene Glacial Events , 1995, Science.

[26]  Pascal Yiou,et al.  Sedimentary record of rapid climatic variability in the North Atlantic Ocean during the Last Glacial Cycle , 1995 .

[27]  P. Bloomfield,et al.  Changes in Atmospheric Circulation and Ocean Ice Cover over the North Atlantic During the Last 41,000 Years , 1994, Science.

[28]  E. Jansen,et al.  Rapid changes in ocean circulation and heat flux in the Nordic seas during the last interglacial period , 1996, Nature.

[29]  G. Bond,et al.  Iceberg Discharges into the North Atlantic on Millennial Time Scales During the Last Glaciation , 1995, Science.

[30]  C. Hillaire‐Marcel,et al.  The magnetic signature of rapidly deposited detrital layers from the Deep Labrador Sea: Relationship to North Atlantic Heinrich layers , 1996 .

[31]  J. D. Hays,et al.  Age Dating and the Orbital Theory of the Ice Ages: Development of a High-Resolution 0 to 300,000-Year Chronostratigraphy , 1987, Quaternary Research.

[32]  Guoping Wu,et al.  Oxygen isotope compositions of sinistral Neogloboquadrina pachyderma tests in surface sediments: North Atlantic Ocean , 1994 .

[33]  W. Peltier,et al.  Dansgaard–Oeschger Oscillations in a Coupled Atmosphere–Ocean Climate Model , 1997 .

[34]  A. Mcintyre,et al.  Forcing of Atlantic Equatorial and Subpolar Millennial Cycles by Precession , 1996, Science.

[35]  J. Jouzel,et al.  Evidence for general instability of past climate from a 250-kyr ice-core record , 1993, Nature.

[36]  Pascal Yiou,et al.  Rapid oscillations in Vostok and GRIP Ice Cores , 1995 .

[37]  W. Karlén,et al.  Climatic changes on a yearly to millennial basis : geological, historical, and instrumental records , 1984 .

[38]  Hjalti Gudmundsson.  A review of the holocene environmental history of Iceland , 1997 .

[39]  M. Allen,et al.  Decadal predictability of North Atlantic sea surface temperature and climate , 1997, Nature.

[40]  Scott J. Lehman,et al.  Suborbital timescale variability of North Atlantic Deep Water during the past 200 , 1995 .

[41]  H. Sejrup,et al.  Coupled response of the late glacial climatic shifts of northwest Europe reflected in Greenland ice cores: Evidence from the northern North Sea , 1995 .

[42]  P. Mayewski,et al.  Climate correlations between Greenland and Antarctica during the past 100,000 years , 1994, Nature.