Here is a review of a paper where the scientists note that cyclical changes in sedimentary rocks caused by climate change are recognized all over the Earth from the Paleozoic Time (hundreds of millions of years ago) into the Quaternary (essentially the present). These changes can be tied to variations in the amount of solar energy received by the Earth. The implications are obvious. Man has no affect, or control over these cyclical climate changes of warming and cooling.
Peter
From: http://www.co2science.org/scripts/CO2ScienceB2C/articles/V10/N20/C2.jsp
On the Pervasiveness of Millennial-Scale Climatic Cyclicity
Reference: Elrick M. and Hinnov, L.A. 2007.
Millennial-scale paleoclimate cycles recorded in widespread Palaeozoic deeper water rhythmites of North America. Palaeogeography, Palaeoclimatology, Palaeoecology 243: 348-372.
What was done: In a major study of rhythmically-interbedded limestone and shale or limestone and chert known as rhythmites, the authors, as they describe it, "(1) review the persistent and widespread occurrence of Palaeozoic rhythmites across North America, (2) demonstrate their primary depositional origin at millennial time scales, (3) summarize the range of paleoenvironmental conditions that prevailed during rhythmite accumulation, and (4) briefly discus the implications primary Palaeozoic rhythmites have on understanding the origin of pervasive late Neogene-Quaternary millennial-scale climate variability."
What was learned: The two U.S. researchers determined that the various rhythmic alternations they studied "accumulated under dramatically different paleoenvironment and paleogeographic conditions including active to passive tectonic settings, equatorial to subtropical latitudes, long-term icehouse through greenhouse climatic conditions, calcite versus aragonitic seas, variable atmospheric CO2 concentrations, before and after land plant and animal evolution, and across widely varying ocean basin configurations."
What it means: On the basis of their many and diverse observations, Elrick and Hinnov conclude "it is apparent that millennial-scale climate changes occurred over a very wide spectrum of paleoceanographic, paleogeographic, paleoclimatic, tectonic, and biologic conditions and over time periods from the Cambrian to the Quaternary," and that given this suite of observations, "it is difficult to invoke models of internally driven thermohaline oceanic oscillations or continental ice sheet instabilities to explain their origin." Hence, they suggest that "millennial-scale paleoclimate variability is a more permanent feature of the earth's ocean-atmosphere system, which points to an external driver such as solar forcing [our italics]."
We would merely add, in this regard, that the 20th-century global warming that led to the establishment of the Current Warm Period appears to have occurred at a time that is not inconsistent with the times of occurrence of other externally-driven century-scale warm intervals of the current interglacial or Holocene - such as the Medieval and Roman Warm Periods that preceded the Current Warm Period - and that there is therefore no need to invoke the anthropogenic-augmented CO2-induced greenhouse effect as an explanation for our present level of warmth. What we experienced over the course of the 20th-century was likely just another of the "run of the mill" millennial-scale climatic transitions that has been a pervasive characteristic of earth's climatic behavior for as long as the earth has been a satellite of the sun.
Reviewed 16 May 2007
Showing posts with label North Atlantic Sediments. Show all posts
Showing posts with label North Atlantic Sediments. Show all posts
Saturday, May 19, 2007
Monday, April 30, 2007
North Atlantic Sediments....yet more
Here is yet another article demonstrating global warming and cooling going on long before man's usage of coal and oil.
Peter
Science 17 February 1995:Vol. 267. no. 5200, pp. 1005 - 1010DOI: 10.1126/science.267.5200.1005
Prev Table of Contents Next
Articles
Iceberg Discharges into the North Atlantic on Millennial Time Scales During the Last Glaciation Gerard C. Bond 1 and Rusty Lotti 1
1 Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA.
High-resolution studies of North Atlantic deep sea cores demonstrate that prominent increases in iceberg calving recurred at intervals of 2000 to 3000 years, much more frequently than the 7000-to 10,000-year pacing of massive ice discharges associated with Heinrich events. The calving cycles correlate with warm-cold oscillations, called Dansgaard-Oeschger events, in Greenland ice cores. Each cycle records synchronous discharges of ice from different sources, and the cycles are decoupled from sea-surface temperatures. These findings point to a mechanism operating within the atmosphere that caused rapid oscillations in air temperatures above Greenland and in calving from more than one ice sheet.
Submitted on October 17, 1994Accepted on December 28, 1994
THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Signatures of rapid climatic changes in organic matter records in the western Mediterranean Sea during the last glacial period.
F. Baudin, N. Combourieu-Nebout, and R. Zahn (2007)Bulletin de la Societe Geologique de France 178, 3-13 Abstract » Full Text » PDF »
Near-synchronous interhemispheric termination of the last glacial maximum in mid-latitudes..
J. M. Schaefer, G. H. Denton, D. J. A. Barrell, S. Ivy-Ochs, P. W. Kubik, B. G. Andersen, F. M. Phillips, T. V. Lowell, and C. Schluchter (2006)Science 312, 1510-1513 Abstract » Full Text » PDF »
Transgressive oversized radial ooid facies in the Late Jurassic Adriatic Platform interior: Low-energy precipitates from highly supersaturated hypersaline waters.
A. Husinec and J. F. Read (2006)GSA Bulletin 118, 550-556 Abstract » Full Text » PDF »
The last deglaciation of the southeastern sector of the Scandinavian ice sheet..
V. R. Rinterknecht, P. U. Clark, G. M. Raisbeck, F. Yiou, A. Bitinas, E. J. Brook, L. Marks, V. Zelcs, J.-P. Lunkka, I. E. Pavlovskaya, J. A. Piotrowski, and A. Raukas (2006)Science 311, 1449-1452 Abstract » Full Text » PDF »
Glacial-Marine or Subglacial Origin of Diamicton Units from the Southwest and North Iceland Shelf: Implications for the Glacial History of Iceland.
S. M. Principato, A. E. Jennings, G. B. Kristjansdottir, and J. T. Andrews (2005)Journal of Sedimentary Research 75, 968-983 Abstract » Full Text » PDF »
Morphometry of Coccolithus pelagicus s.l. (Coccolithophore, Haptophyta) from offshore Portugal, during the last 200 kyr..
A. Parente, M. Cachao, K.-H. Baumann, L. de Abreu, and J. Ferreira (2004)Micropaleontology 50, 107-120 Abstract » Full Text » PDF »
Fine-grained sediment lofting from meltwater-generated turbidity currents during Heinrich events.
(2004)Geology 32, 449-452
Bipolar correlation of volcanism with millennial climate change.
R. C. Bay, N. Bramall, and P. B. Price (2004)PNAS 101, 6341-6345 Abstract » Full Text » PDF »
Does the Trigger for Abrupt Climate Change Reside in the Ocean or in the Atmosphere?.
W. S. Broecker (2003)Science 300, 1519-1522 Abstract » Full Text » PDF »
Catastrophic arid episodes in the Eastern Mediterranean linked with the North Atlantic Heinrich events.
(2003)Geology 31, 439-442
Interplay between tectonics and glacio-eustasy: Pleistocene succession of the Crotone basin, Calabria (southern Italy).
(2002)GSA Bulletin 114, 1183-1209
Enhanced aridity and atmospheric high-pressure stability over the western Mediterranean during the North Atlantic cold events of the past 50 k.y..
(2002)Geology 30, 863-866
Ocean circulation and iceberg discharge in the glacial North Atlantic: Inferences from unmixing of sediment size distributions.
(2002)Geology 30, 555-558
Widespread evidence of 1500 yr climate variability in North America during the past 14 000 yr.
(2002)Geology 30, 455-458
Calving glaciers.
C. J. van der Veen (2002)Progress in Physical Geography 26, 96-122 Abstract » PDF »
Late Pleistocene glacially-influenced deep-marine sedimentation off NW Britain: implications for the rock record.
S. Davison and M. S. Stoker (2002)Geological Society, London, Special Publications 203, 129-147 Abstract » PDF »
Grain-size characteristics and provenance of ice-proximal glacial marine sediments.
J. T. Andrews and S. M. Principato (2002)Geological Society, London, Special Publications 203, 305-324 Abstract » PDF »
Millennial and sub-millennial-scale variability in sediment colour from the Barra Fan, NW Scotland: implications for British ice sheet dynamics.
L. J. Wilson and W. E. N. Austin (2002)Geological Society, London, Special Publications 203, 349-365 Abstract » PDF »
Glacier-influenced sedimentation on high-latitude continental margins: introduction and overview.
J. A. Dowdeswell and C. O Cofaigh (2002)Geological Society, London, Special Publications 203, 1-9 Abstract » PDF »
Diatom-based conductivity reconstruction and palaeoclimatic interpretation of a 40-ka record from Lake Zeribar, Iran.
J. A. Snyder, J. A. Snyder, K. Wasylik, S. C. Fritz, and H. E. Wright Jr (2001)The Holocene 11, 737-745 Abstract » PDF »
Timing of Millennial-Scale Climate Change in Antarctica and Greenland During the Last Glacial Period.
T. Blunier and E. J. Brook (2001)Science 291, 109-112 Abstract » Full Text »
Modulation and amplification of climatic changes in the Northern Hemisphere by the Indian summer monsoon during the past 80 k.y.
(2001)Geology 29, 63-66
Hydrological Impact of Heinrich Events in the Subtropical Northeast Atlantic.
E. Bard, F. Rostek, J.-L. Turon, and S. Gendreau (2000)Science 289, 1321-1324 Abstract » Full Text »
Millennial-Scale Instability of the Antarctic Ice Sheet During the Last Glaciation.
S. L. Kanfoush, D. A. Hodell, C. D. Charles, T. P. Guilderson, P. G. Mortyn, and U. S. Ninnemann (2000)Science 288, 1815-1819 Abstract » Full Text » PDF »
Century- to millennial-scale sedimentological-geochemical records of glacial-Holocene sediment variations from the Barra Fan (NE Atlantic).
D. Kroon, D. KROON, G. SHIMMIELD, W. E. N. AUSTIN, S. DERRICK, P. KNUTZ, and T. SHIMMIELD (2000)Journal of the Geological Society 157, 643-653 Abstract » Full Text » PDF »
Were the North Atlantic Heinrich events triggered by the behavior of the European ice sheets?.
(2000)Geology 28, 123-126
Seismic stratigraphy of the Gulf of Cadiz continental shelf: a model for Late Quaternary very high-resolution sequence stratigraphy and response to sea-level fall.
F. J. Hernandez-Molina, L. Somoza, and F. Lobo (2000)Geological Society, London, Special Publications 172, 329-362 Abstract » PDF »
Abrupt Climate Change at the End of the Last Glacial Period Inferred from Trapped Air in Polar Ice.
J. P. Severinghaus and E. J. Brook (1999)Science 286, 930-934 Abstract » Full Text »
Late-Holocene climate in central West Greenland: meteorological data and rock-glacier isotope evidence.
O. Humlum and O. Humlum (1999)The Holocene 9, 581-594 Abstract » PDF »
A Mid-European Decadal Isotope-Climate Record from 15,500 to 5000 Years B.P..
U. v. Grafenstein, H. Erlenkeuser, A. Brauer, J. Jouzel, and S. J. Johnsen (1999)Science 284, 1654-1657 Abstract » Full Text »
Sudden climate transitions during the Quaternary.
J. Adams, M. Maslin, and E. Thomas (1999)Progress in Physical Geography 23, 1-36 Abstract » PDF »
Ice-flow stages and glacial bedforms in north central Ireland: a record of rapid environmental change during the last glacial termination.
A. M. McCABE, J. KNIGHT, and S. G. McCARRON (1999)Journal of the Geological Society 156, 63-72 Abstract » PDF »
Early-Holocene aridity in tropical northern Australia.
J. Nott, E. Bryant, and D. Price (1999)The Holocene 9, 231-236 Abstract » PDF »
Abrupt Climate Events 500,000 to 340,000 Years Ago: Evidence from Subpolar North Atlantic Sediments.
D. W. Oppo, J. F. McManus, and J. L. Cullen (1998)Science 279, 1335-1338 Abstract » Full Text »
Cyclic sedimentation on the Faeroe Drift 53-10 ka BP related to climatic variations.
T. L. Rasmussen, E. Thomsen, and T. C. E. Van Weering (1998)Geological Society, London, Special Publications 129, 255-267 Abstract » PDF »
Natural gas hydrates: searching for the long-term climatic and slope-stability records.
B. U. Haq (1998)Geological Society, London, Special Publications 137, 303-318 Abstract » PDF »
Thermohaline Circulation, the Achilles Heel of Our Climate System: Will Man-Made CO2 Upset the Current Balance?.
W. S. Broecker (1997)Science 278, 1582-1588 Abstract » Full Text »
A Pervasive Millennial-Scale Cycle in North Atlantic Holocene and Glacial Climates.
G. Bond, W. Showers, M. Cheseby, R. Lotti, P. Almasi, P. deMenocal, P. Priore, H. Cullen, I. Hajdas, and G. Bonani (1997)Science 278, 1257-1266 Abstract » Full Text »
Dating and rhythmicity from the last deglacial cycle in the British Isles.
A. M. McCABE (1996)Journal of the Geological Society 153, 499-502 Abstract » PDF »
Response: Testing for Bias in the Climate Record.
D. J. Thomson (1996)Science 271, 1881-1883 PDF »
Abrupt changes in marine conditions, Sunneshine Fiord, eastern Baffin Island, NWT during the last deglacial transition: Younger Dryas and H-0 events.
J. T. Andrews, L. E. Osterman, A. E. Jennings, J. P. M. Syvitski, G. H. Miller, and N. Weiner (1996)Geological Society, London, Special Publications 111, 11-27 Abstract » PDF »
Shelf erosion and glacial ice proximity in the Labrador Sea during and after Heinrich events (H-3 or 4 to H-0) as shown by foraminifera.
A. E. Jennings, K. A. Tedesco, J. T. Andrews, and M. E. Kirby (1996)Geological Society, London, Special Publications 111, 29-49 Abstract » PDF »
Deglaciation of the inner Scotian Shelf, Nova Scotia: correlation of terrestrial and marine glacial events.
R. R. Stea, R. Boyd, O. Costello, G. B. J. Fader, and D. B. Scott (1996)Geological Society, London, Special Publications 111, 77-101 Abstract » PDF »
Rock (mineral)-magnetic properties of post-glacial (16-0.5 ka) sediments from the Emerald Basin (Scotian Shelf), Canada.
F. R. Hall and S. J. Reed (1996)Geological Society, London, Special Publications 111, 103-115 Abstract » PDF »
Late Quaternary glacial history and short-term ice-rafted debris fluctuations along the East Greenland continental margin.
R. Stein, S.-i. Nam, H. Grobe, and H. Hubberten (1996)Geological Society, London, Special Publications 111, 135-151 Abstract » PDF »
Late glacial air temperature, oceanographic and ice sheet interactions in the southern Barents Sea region.
T. O. Vorren and J. S. Laberg (1996)Geological Society, London, Special Publications 111, 303-321 Abstract » PDF »
Interhemispheric Correlation of Late Pleistocene Glacial Events.
T. V. Lowell, T. V. Lowell, C. J. Heusser, B. G. Andersen, P. I. Moreno, A. Hauser, L. E. Heusser, C. Schluchter, D. R. Marchant, and G. H. Denton (1995)Science 269, 1541-1549 Abstract » PDF »
The Seasons, Global Temperature, and Precession.
D. J. Thomson (1995)Science 268, 59-68 Abstract » PDF »
Instability of Glacial Climate in a Model of the Ocean- Atmosphere-Cryosphere System.
A. Schmittner, M. Yoshimori, and A. J. Weaver (2002)Science 295, 1489-1493 Abstract » Full Text » PDF »
Peter
Science 17 February 1995:Vol. 267. no. 5200, pp. 1005 - 1010DOI: 10.1126/science.267.5200.1005
Prev Table of Contents Next
Articles
Iceberg Discharges into the North Atlantic on Millennial Time Scales During the Last Glaciation Gerard C. Bond 1 and Rusty Lotti 1
1 Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA.
High-resolution studies of North Atlantic deep sea cores demonstrate that prominent increases in iceberg calving recurred at intervals of 2000 to 3000 years, much more frequently than the 7000-to 10,000-year pacing of massive ice discharges associated with Heinrich events. The calving cycles correlate with warm-cold oscillations, called Dansgaard-Oeschger events, in Greenland ice cores. Each cycle records synchronous discharges of ice from different sources, and the cycles are decoupled from sea-surface temperatures. These findings point to a mechanism operating within the atmosphere that caused rapid oscillations in air temperatures above Greenland and in calving from more than one ice sheet.
Submitted on October 17, 1994Accepted on December 28, 1994
THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Signatures of rapid climatic changes in organic matter records in the western Mediterranean Sea during the last glacial period.
F. Baudin, N. Combourieu-Nebout, and R. Zahn (2007)Bulletin de la Societe Geologique de France 178, 3-13 Abstract » Full Text » PDF »
Near-synchronous interhemispheric termination of the last glacial maximum in mid-latitudes..
J. M. Schaefer, G. H. Denton, D. J. A. Barrell, S. Ivy-Ochs, P. W. Kubik, B. G. Andersen, F. M. Phillips, T. V. Lowell, and C. Schluchter (2006)Science 312, 1510-1513 Abstract » Full Text » PDF »
Transgressive oversized radial ooid facies in the Late Jurassic Adriatic Platform interior: Low-energy precipitates from highly supersaturated hypersaline waters.
A. Husinec and J. F. Read (2006)GSA Bulletin 118, 550-556 Abstract » Full Text » PDF »
The last deglaciation of the southeastern sector of the Scandinavian ice sheet..
V. R. Rinterknecht, P. U. Clark, G. M. Raisbeck, F. Yiou, A. Bitinas, E. J. Brook, L. Marks, V. Zelcs, J.-P. Lunkka, I. E. Pavlovskaya, J. A. Piotrowski, and A. Raukas (2006)Science 311, 1449-1452 Abstract » Full Text » PDF »
Glacial-Marine or Subglacial Origin of Diamicton Units from the Southwest and North Iceland Shelf: Implications for the Glacial History of Iceland.
S. M. Principato, A. E. Jennings, G. B. Kristjansdottir, and J. T. Andrews (2005)Journal of Sedimentary Research 75, 968-983 Abstract » Full Text » PDF »
Morphometry of Coccolithus pelagicus s.l. (Coccolithophore, Haptophyta) from offshore Portugal, during the last 200 kyr..
A. Parente, M. Cachao, K.-H. Baumann, L. de Abreu, and J. Ferreira (2004)Micropaleontology 50, 107-120 Abstract » Full Text » PDF »
Fine-grained sediment lofting from meltwater-generated turbidity currents during Heinrich events.
(2004)Geology 32, 449-452
Bipolar correlation of volcanism with millennial climate change.
R. C. Bay, N. Bramall, and P. B. Price (2004)PNAS 101, 6341-6345 Abstract » Full Text » PDF »
Does the Trigger for Abrupt Climate Change Reside in the Ocean or in the Atmosphere?.
W. S. Broecker (2003)Science 300, 1519-1522 Abstract » Full Text » PDF »
Catastrophic arid episodes in the Eastern Mediterranean linked with the North Atlantic Heinrich events.
(2003)Geology 31, 439-442
Interplay between tectonics and glacio-eustasy: Pleistocene succession of the Crotone basin, Calabria (southern Italy).
(2002)GSA Bulletin 114, 1183-1209
Enhanced aridity and atmospheric high-pressure stability over the western Mediterranean during the North Atlantic cold events of the past 50 k.y..
(2002)Geology 30, 863-866
Ocean circulation and iceberg discharge in the glacial North Atlantic: Inferences from unmixing of sediment size distributions.
(2002)Geology 30, 555-558
Widespread evidence of 1500 yr climate variability in North America during the past 14 000 yr.
(2002)Geology 30, 455-458
Calving glaciers.
C. J. van der Veen (2002)Progress in Physical Geography 26, 96-122 Abstract » PDF »
Late Pleistocene glacially-influenced deep-marine sedimentation off NW Britain: implications for the rock record.
S. Davison and M. S. Stoker (2002)Geological Society, London, Special Publications 203, 129-147 Abstract » PDF »
Grain-size characteristics and provenance of ice-proximal glacial marine sediments.
J. T. Andrews and S. M. Principato (2002)Geological Society, London, Special Publications 203, 305-324 Abstract » PDF »
Millennial and sub-millennial-scale variability in sediment colour from the Barra Fan, NW Scotland: implications for British ice sheet dynamics.
L. J. Wilson and W. E. N. Austin (2002)Geological Society, London, Special Publications 203, 349-365 Abstract » PDF »
Glacier-influenced sedimentation on high-latitude continental margins: introduction and overview.
J. A. Dowdeswell and C. O Cofaigh (2002)Geological Society, London, Special Publications 203, 1-9 Abstract » PDF »
Diatom-based conductivity reconstruction and palaeoclimatic interpretation of a 40-ka record from Lake Zeribar, Iran.
J. A. Snyder, J. A. Snyder, K. Wasylik, S. C. Fritz, and H. E. Wright Jr (2001)The Holocene 11, 737-745 Abstract » PDF »
Timing of Millennial-Scale Climate Change in Antarctica and Greenland During the Last Glacial Period.
T. Blunier and E. J. Brook (2001)Science 291, 109-112 Abstract » Full Text »
Modulation and amplification of climatic changes in the Northern Hemisphere by the Indian summer monsoon during the past 80 k.y.
(2001)Geology 29, 63-66
Hydrological Impact of Heinrich Events in the Subtropical Northeast Atlantic.
E. Bard, F. Rostek, J.-L. Turon, and S. Gendreau (2000)Science 289, 1321-1324 Abstract » Full Text »
Millennial-Scale Instability of the Antarctic Ice Sheet During the Last Glaciation.
S. L. Kanfoush, D. A. Hodell, C. D. Charles, T. P. Guilderson, P. G. Mortyn, and U. S. Ninnemann (2000)Science 288, 1815-1819 Abstract » Full Text » PDF »
Century- to millennial-scale sedimentological-geochemical records of glacial-Holocene sediment variations from the Barra Fan (NE Atlantic).
D. Kroon, D. KROON, G. SHIMMIELD, W. E. N. AUSTIN, S. DERRICK, P. KNUTZ, and T. SHIMMIELD (2000)Journal of the Geological Society 157, 643-653 Abstract » Full Text » PDF »
Were the North Atlantic Heinrich events triggered by the behavior of the European ice sheets?.
(2000)Geology 28, 123-126
Seismic stratigraphy of the Gulf of Cadiz continental shelf: a model for Late Quaternary very high-resolution sequence stratigraphy and response to sea-level fall.
F. J. Hernandez-Molina, L. Somoza, and F. Lobo (2000)Geological Society, London, Special Publications 172, 329-362 Abstract » PDF »
Abrupt Climate Change at the End of the Last Glacial Period Inferred from Trapped Air in Polar Ice.
J. P. Severinghaus and E. J. Brook (1999)Science 286, 930-934 Abstract » Full Text »
Late-Holocene climate in central West Greenland: meteorological data and rock-glacier isotope evidence.
O. Humlum and O. Humlum (1999)The Holocene 9, 581-594 Abstract » PDF »
A Mid-European Decadal Isotope-Climate Record from 15,500 to 5000 Years B.P..
U. v. Grafenstein, H. Erlenkeuser, A. Brauer, J. Jouzel, and S. J. Johnsen (1999)Science 284, 1654-1657 Abstract » Full Text »
Sudden climate transitions during the Quaternary.
J. Adams, M. Maslin, and E. Thomas (1999)Progress in Physical Geography 23, 1-36 Abstract » PDF »
Ice-flow stages and glacial bedforms in north central Ireland: a record of rapid environmental change during the last glacial termination.
A. M. McCABE, J. KNIGHT, and S. G. McCARRON (1999)Journal of the Geological Society 156, 63-72 Abstract » PDF »
Early-Holocene aridity in tropical northern Australia.
J. Nott, E. Bryant, and D. Price (1999)The Holocene 9, 231-236 Abstract » PDF »
Abrupt Climate Events 500,000 to 340,000 Years Ago: Evidence from Subpolar North Atlantic Sediments.
D. W. Oppo, J. F. McManus, and J. L. Cullen (1998)Science 279, 1335-1338 Abstract » Full Text »
Cyclic sedimentation on the Faeroe Drift 53-10 ka BP related to climatic variations.
T. L. Rasmussen, E. Thomsen, and T. C. E. Van Weering (1998)Geological Society, London, Special Publications 129, 255-267 Abstract » PDF »
Natural gas hydrates: searching for the long-term climatic and slope-stability records.
B. U. Haq (1998)Geological Society, London, Special Publications 137, 303-318 Abstract » PDF »
Thermohaline Circulation, the Achilles Heel of Our Climate System: Will Man-Made CO2 Upset the Current Balance?.
W. S. Broecker (1997)Science 278, 1582-1588 Abstract » Full Text »
A Pervasive Millennial-Scale Cycle in North Atlantic Holocene and Glacial Climates.
G. Bond, W. Showers, M. Cheseby, R. Lotti, P. Almasi, P. deMenocal, P. Priore, H. Cullen, I. Hajdas, and G. Bonani (1997)Science 278, 1257-1266 Abstract » Full Text »
Dating and rhythmicity from the last deglacial cycle in the British Isles.
A. M. McCABE (1996)Journal of the Geological Society 153, 499-502 Abstract » PDF »
Response: Testing for Bias in the Climate Record.
D. J. Thomson (1996)Science 271, 1881-1883 PDF »
Abrupt changes in marine conditions, Sunneshine Fiord, eastern Baffin Island, NWT during the last deglacial transition: Younger Dryas and H-0 events.
J. T. Andrews, L. E. Osterman, A. E. Jennings, J. P. M. Syvitski, G. H. Miller, and N. Weiner (1996)Geological Society, London, Special Publications 111, 11-27 Abstract » PDF »
Shelf erosion and glacial ice proximity in the Labrador Sea during and after Heinrich events (H-3 or 4 to H-0) as shown by foraminifera.
A. E. Jennings, K. A. Tedesco, J. T. Andrews, and M. E. Kirby (1996)Geological Society, London, Special Publications 111, 29-49 Abstract » PDF »
Deglaciation of the inner Scotian Shelf, Nova Scotia: correlation of terrestrial and marine glacial events.
R. R. Stea, R. Boyd, O. Costello, G. B. J. Fader, and D. B. Scott (1996)Geological Society, London, Special Publications 111, 77-101 Abstract » PDF »
Rock (mineral)-magnetic properties of post-glacial (16-0.5 ka) sediments from the Emerald Basin (Scotian Shelf), Canada.
F. R. Hall and S. J. Reed (1996)Geological Society, London, Special Publications 111, 103-115 Abstract » PDF »
Late Quaternary glacial history and short-term ice-rafted debris fluctuations along the East Greenland continental margin.
R. Stein, S.-i. Nam, H. Grobe, and H. Hubberten (1996)Geological Society, London, Special Publications 111, 135-151 Abstract » PDF »
Late glacial air temperature, oceanographic and ice sheet interactions in the southern Barents Sea region.
T. O. Vorren and J. S. Laberg (1996)Geological Society, London, Special Publications 111, 303-321 Abstract » PDF »
Interhemispheric Correlation of Late Pleistocene Glacial Events.
T. V. Lowell, T. V. Lowell, C. J. Heusser, B. G. Andersen, P. I. Moreno, A. Hauser, L. E. Heusser, C. Schluchter, D. R. Marchant, and G. H. Denton (1995)Science 269, 1541-1549 Abstract » PDF »
The Seasons, Global Temperature, and Precession.
D. J. Thomson (1995)Science 268, 59-68 Abstract » PDF »
Instability of Glacial Climate in a Model of the Ocean- Atmosphere-Cryosphere System.
A. Schmittner, M. Yoshimori, and A. J. Weaver (2002)Science 295, 1489-1493 Abstract » Full Text » PDF »
North Atlantic Sediments.....con't.
I found this almost immediately......hmmmmm.......where the heck is the carbon dioxide causing the warming coming from? Or could it be CO2 plays little if any role?
Peter
Nature 365, 143 - 147 (09 September 1993); doi:10.1038/365143a0
Correlations between climate records from North Atlantic sediments and Greenland ice
Gerard Bond*, Wallace Broecker*, Sigfus Johnsen†‡, Jerry McManus*, Laurent Labeyrie§, Jean Jouzel¶ & Georges Bonani
*Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA†The Niehls Bohr Institute, Department of Geophysics, University of Copenhagen, Haraldsgade 6, DK-2200, Copenhagen N, Denmark‡Science Institute, Department of Geophysics, University of Iceland, Dunghaga 3, IS-107 Reykjavik, Iceland§CFR Laboratoire mixte CNRS-CEA, Domaine du CNRS, 91198, Gif-sur-Yvette, Cedex, France¶Laboratorie de Modération du Climat et de I'Environnement, CEA/DSM, CE Saclay 91191, FranceLaboratorie de Glaciologie et Géophysique de 1'Environnement, CNRS, BP96, 38402 St. Martin d'Hères Cedex, France£Institute fur Mittelenergiephysik, ETH Honggerberg, CH-8093 Zurich, Switzerland
OXYGEN isotope measurements in Greenland ice demonstrate that a series of rapid warm-cold oscillations—called Dansgaard–Oeschger events—punctuated the last glaciation1. Here we present records of sea surface temperature from North Atlantic sediments spanning the past 90 kyr which contain a series of rapid temperature oscillations closely matching those in the ice-core record, confirming predictions that the ocean must bear the imprint of the Dansgaard–Oeschger events2,3. Moreover, we show that between 20 and 80 kyr ago, the shifts in ocean-atmosphere temperature are bundled into cooling cycles, lasting on average 10 to 15 kyr, with asymmetrical saw-tooth shapes. Each cycle culminated in an enormous discharge of icebergs into the North Atlantic (a 'Hein-rich event'4,5), followed by an abrupt shift to a warmer climate. These cycles document a previously unrecognized link between ice sheet behaviour and ocean–atmosphere temperature changes. An important question that remains to be resolved is whether the cycles are driven by external factors, such as orbital forcing, or by inter-nal ice-sheet dynamics.
References
1.
Dansgaard, W. et al. Nature 364, 218−220 (1993). Article ISI
2.
Broecker, W. S. et al. Quat. Res. 30, 1−6 (1988). Article
3.
Broecker, W. S., Bond, G. & Klas, M. Paleoceanogr. 5(4), 469−477 (1990).
4.
Bond, G. et al. Nature 360, 245−249 (1992). Article ISI
5.
Broecker, W. S., Bond, G., Klas, M., Clark, E. & McManus, J. Clim. Dynamics 6, 265−273 (1992).
6.
Bé, A. W. H. & Tolderlund, D. S. Micropaleontology of Oceans (eds Funnell, B. M. & Riedel, W. R.) 105−149 (Cambridge Univ. Press, 1971).
7.
Kellogg, T. B. Boreas 9, 115−137 (1980). ISI
8.
Broecker, W. S. Paleoceanogr. 3(1), 1−19 (1988).
9.
Lehman, S. J. & Keigwin, L. D. Nature 356, 757−762 (1992). Article ISI
10.
Karpuz, N. C. & Jansen, E. Paleoceanogr. 7(4), 499−520 (1992).
11.
Bond, G., Broecker, W., Lotti, R. & McManus, J. in Start of a Glacial (eds Kukla, G. J. & Went, E.) 185−205 (Springer, Berlin, 1992).
12.
Johnsen, S. J. et al. Nature 359, 311−313 (1992). Article ISI
13.
Alley, R. B. et al. Nature 362, 527−529 (1993). Article ISI
14.
Bard, E., Arnold, M., Fairbanks, R. G. & Hamelin, B. Radiocarbon 3(1), 191−199 (1993).
15.
Martinson, D. G. et al. Quat. Res. 27, 1−29 (1987). Article ISI ChemPort
16.
Dansgaard, W., White, J. W. C. & Johnsen, S. J. Nature 339, 532−533 (1989). Article ISI
17.
Taylor, K. C. et al. Nature 361, 432−436 (1993). Article ISI
18.
Heinrich, H. Quat. Res. 29, 142−152 (1988). Article ISI
19.
Ruddiman, W. F. & McIntyre, A. Paleogeogr. Palaeoclimatol. Palaeoecol. 35, 145−214 (1981). ChemPort
20.
Duplessy, J-C. Labeyrie, L., Juillet-LeClerc, A. & Duprat, J. in The Last Deglaciation: Absolute and Radiocarbon Chronologies (eds Bard, E. & Broecker, W. S.) 201−208 (Springer, Berlin, 1992).
21.
Andrews, J. T., Tedesco, K., Briggs, W. M. & Evans, L. W. Can. J. Earth Sci. (in the press).
22.
MacAyeal, D. R. Nature 359, 29−32 (1992). Article ISI
23.
Ruddiman, W. F. in Northern America and Adjacent Oceans during the Last Deglaciation: The Geology of North America (eds Ruddiman, W. F. & Wright, H. E. Jr) 137−154 (Geol. Soc. of Am, Boulder, 1987).
24.
Sancetta, C., Imbrie, J. & Kipp, N. G. Quat. Res. 3, 110−116 (1973). Article
25.
Woillard, G. & Mook, W. G. Science 215, 159−161 (1982). ISI ChemPort
26.
Shakleton, N. J., Imbrie, J. & Hall, M. A. Earth planet. Sci. Lett. 65, 233−244 (1983). Article ISI ChemPort
27.
Bloom, A. L., Broecker, W. S., Chappell, J. M. A., Matthews, R. K. & Mesolella, K. J. Quat. Res. 4, 185−205 (1974). Article ISI ChemPort
Peter
Nature 365, 143 - 147 (09 September 1993); doi:10.1038/365143a0
Correlations between climate records from North Atlantic sediments and Greenland ice
Gerard Bond*, Wallace Broecker*, Sigfus Johnsen†‡, Jerry McManus*, Laurent Labeyrie§, Jean Jouzel¶ & Georges Bonani
*Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA†The Niehls Bohr Institute, Department of Geophysics, University of Copenhagen, Haraldsgade 6, DK-2200, Copenhagen N, Denmark‡Science Institute, Department of Geophysics, University of Iceland, Dunghaga 3, IS-107 Reykjavik, Iceland§CFR Laboratoire mixte CNRS-CEA, Domaine du CNRS, 91198, Gif-sur-Yvette, Cedex, France¶Laboratorie de Modération du Climat et de I'Environnement, CEA/DSM, CE Saclay 91191, FranceLaboratorie de Glaciologie et Géophysique de 1'Environnement, CNRS, BP96, 38402 St. Martin d'Hères Cedex, France£Institute fur Mittelenergiephysik, ETH Honggerberg, CH-8093 Zurich, Switzerland
OXYGEN isotope measurements in Greenland ice demonstrate that a series of rapid warm-cold oscillations—called Dansgaard–Oeschger events—punctuated the last glaciation1. Here we present records of sea surface temperature from North Atlantic sediments spanning the past 90 kyr which contain a series of rapid temperature oscillations closely matching those in the ice-core record, confirming predictions that the ocean must bear the imprint of the Dansgaard–Oeschger events2,3. Moreover, we show that between 20 and 80 kyr ago, the shifts in ocean-atmosphere temperature are bundled into cooling cycles, lasting on average 10 to 15 kyr, with asymmetrical saw-tooth shapes. Each cycle culminated in an enormous discharge of icebergs into the North Atlantic (a 'Hein-rich event'4,5), followed by an abrupt shift to a warmer climate. These cycles document a previously unrecognized link between ice sheet behaviour and ocean–atmosphere temperature changes. An important question that remains to be resolved is whether the cycles are driven by external factors, such as orbital forcing, or by inter-nal ice-sheet dynamics.
References
1.
Dansgaard, W. et al. Nature 364, 218−220 (1993). Article ISI
2.
Broecker, W. S. et al. Quat. Res. 30, 1−6 (1988). Article
3.
Broecker, W. S., Bond, G. & Klas, M. Paleoceanogr. 5(4), 469−477 (1990).
4.
Bond, G. et al. Nature 360, 245−249 (1992). Article ISI
5.
Broecker, W. S., Bond, G., Klas, M., Clark, E. & McManus, J. Clim. Dynamics 6, 265−273 (1992).
6.
Bé, A. W. H. & Tolderlund, D. S. Micropaleontology of Oceans (eds Funnell, B. M. & Riedel, W. R.) 105−149 (Cambridge Univ. Press, 1971).
7.
Kellogg, T. B. Boreas 9, 115−137 (1980). ISI
8.
Broecker, W. S. Paleoceanogr. 3(1), 1−19 (1988).
9.
Lehman, S. J. & Keigwin, L. D. Nature 356, 757−762 (1992). Article ISI
10.
Karpuz, N. C. & Jansen, E. Paleoceanogr. 7(4), 499−520 (1992).
11.
Bond, G., Broecker, W., Lotti, R. & McManus, J. in Start of a Glacial (eds Kukla, G. J. & Went, E.) 185−205 (Springer, Berlin, 1992).
12.
Johnsen, S. J. et al. Nature 359, 311−313 (1992). Article ISI
13.
Alley, R. B. et al. Nature 362, 527−529 (1993). Article ISI
14.
Bard, E., Arnold, M., Fairbanks, R. G. & Hamelin, B. Radiocarbon 3(1), 191−199 (1993).
15.
Martinson, D. G. et al. Quat. Res. 27, 1−29 (1987). Article ISI ChemPort
16.
Dansgaard, W., White, J. W. C. & Johnsen, S. J. Nature 339, 532−533 (1989). Article ISI
17.
Taylor, K. C. et al. Nature 361, 432−436 (1993). Article ISI
18.
Heinrich, H. Quat. Res. 29, 142−152 (1988). Article ISI
19.
Ruddiman, W. F. & McIntyre, A. Paleogeogr. Palaeoclimatol. Palaeoecol. 35, 145−214 (1981). ChemPort
20.
Duplessy, J-C. Labeyrie, L., Juillet-LeClerc, A. & Duprat, J. in The Last Deglaciation: Absolute and Radiocarbon Chronologies (eds Bard, E. & Broecker, W. S.) 201−208 (Springer, Berlin, 1992).
21.
Andrews, J. T., Tedesco, K., Briggs, W. M. & Evans, L. W. Can. J. Earth Sci. (in the press).
22.
MacAyeal, D. R. Nature 359, 29−32 (1992). Article ISI
23.
Ruddiman, W. F. in Northern America and Adjacent Oceans during the Last Deglaciation: The Geology of North America (eds Ruddiman, W. F. & Wright, H. E. Jr) 137−154 (Geol. Soc. of Am, Boulder, 1987).
24.
Sancetta, C., Imbrie, J. & Kipp, N. G. Quat. Res. 3, 110−116 (1973). Article
25.
Woillard, G. & Mook, W. G. Science 215, 159−161 (1982). ISI ChemPort
26.
Shakleton, N. J., Imbrie, J. & Hall, M. A. Earth planet. Sci. Lett. 65, 233−244 (1983). Article ISI ChemPort
27.
Bloom, A. L., Broecker, W. S., Chappell, J. M. A., Matthews, R. K. & Mesolella, K. J. Quat. Res. 4, 185−205 (1974). Article ISI ChemPort
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