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:
Related Expeditions:
ODP 162
Identifier:
ID:
2008-001656
Type:
georefid
ID:
10.1007/s00382-005-0063-y
Type:
doi
Creator:
Name:
Landais, Amaelle
Affiliation:
Universite Joseph Fourier, CNRS, Laboratoire des Sciences du Climat et de l'Environment, Gif-sur-Yvette, France
Role:
author
Name:
Masson-Delmotte, Valerie
Affiliation:
University of Copenhagen, Denmark
Role:
author
Name:
Jouzel, Jean
Affiliation:
University of Bern, Switzerland
Role:
author
Name:
Raynaud, Dominique
Affiliation:
Hebrew University, Israel
Role:
author
Name:
Johnsen, Sigfus
Affiliation:
Role:
author
Name:
Huber, Christof
Affiliation:
Role:
author
Name:
Leuenberger, Markus
Affiliation:
Role:
author
Name:
Schwander, Jakob
Affiliation:
Role:
author
Name:
Minster, Benedicte
Affiliation:
Role:
author
Identification:
Title:
The glacial inception as recorded in the NorthGRIP Greenland ice core; timing, structure and associated abrupt temperature changes
Year:
2006
Source:
Climate Dynamics
Publisher:
Springer-Verlag, Heidelberg, Federal Republic of Germany
Volume:
26
Issue:
2-3
Pages:
273-284
Abstract:
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.)
Language:
English
Genre:
Serial
Rights:
URL:
Coverage: Geographic coordinates: North:55.2906 West:-14.4208 East:
106.4800 South:-78.2800
Keywords: 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;
.