Landais, Amaelle et al. (2006): The glacial inception as recorded in the NorthGRIP Greenland ice core; timing, structure and associated abrupt temperature changes

Leg/Site/Hole:
ODP 162
ODP 162 980
Identifier:
2008-001656
georefid

10.1007/s00382-005-0063-y
doi

Creator:
Landais, Amaelle
Universite Joseph Fourier, CNRS, Laboratoire des Sciences du Climat et de l'Environment, Gif-sur-Yvette, France
author

Masson-Delmotte, Valerie
University of Copenhagen, Denmark
author

Jouzel, Jean
University of Bern, Switzerland
author

Raynaud, Dominique
Hebrew University, Israel
author

Johnsen, Sigfus
author

Huber, Christof
author

Leuenberger, Markus
author

Schwander, Jakob
author

Minster, Benedicte
author

Identification:
The glacial inception as recorded in the NorthGRIP Greenland ice core; timing, structure and associated abrupt temperature changes
2006
Climate Dynamics
Springer-Verlag, Heidelberg, Federal Republic of Germany
26
2-3
273-284
The mechanisms involved in the glacial inception are still poorly constrained due to a lack of high resolution and cross-dated climate records at various locations. Using air isotopic measurements in the recently drilled NorthGRIP ice core, we show that no evidence exists for stratigraphic disturbance of the climate record of the last glacial inception encompassing Dansgaard-Oeschger events (DO) 25, 24 and 23, even if we lack sufficient resolution to completely rule out disturbance over DO 25. We quantify the rapid surface temperature variability over DO 23 and 24 with associated warmings of 10+ or -2.5 and 16+ or -2.5 degrees C, amplitudes which mimic those observed in full glacial conditions. We use records of delta (super 18) O of O (sub 2) to propose a common timescale for the NorthGRIP and the Antarctic Vostok ice cores, with a maximum uncertainty of 2,500 years, and to examine the interhemispheric sequence of events over this period. (mod. journ. abst.)
English
Serial
Coverage:Geographic coordinates:
North:55.2906
West:-14.4208East: 106.4800
South:-78.2800

Quaternary geology; Antarctica; Arctic region; Cenozoic; climate change; glacial environment; glacial geology; Greenland; Greenland ice sheet; GRIP; ice cores; ice sheets; isotope ratios; isotopes; Leg 162; N-15/N-14; NGRIP; nitrogen; O-18/O-16; Ocean Drilling Program; ODP Site 980; oxygen; paleoatmosphere; paleoclimatology; paleotemperature; Quaternary; stable isotopes; temperature; Vostok Station;

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