Terrestrial climate signal of the "8200-yr cold event" in the Labrador Sea region
Accelerated melting of Greenland ice has raised concern about the future impact of enhanced freshwater discharge on regional climate through its effect on ocean circulation. An abrupt cooling event ca. 8200 cal. yr B.P. has been linked to meltwater from the decaying North American ice sheet. Oxygen...
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ftsouthampton:oai:eprints.soton.ac.uk:66832 2023-07-30T04:03:49+02:00 Terrestrial climate signal of the "8200-yr cold event" in the Labrador Sea region Daley, T.J. Street-Perrott, F.A. Loader, N.J. Barber, K.E. Hughes, P.D.M. Fisher, E.H. Marshall, J.D. 2009-09 text https://eprints.soton.ac.uk/66832/ https://eprints.soton.ac.uk/66832/1/__soton.ac.uk_ude_PersonalFiles_Users_slb1_mydocuments_New%2520folder_66832.pdf en eng https://eprints.soton.ac.uk/66832/1/__soton.ac.uk_ude_PersonalFiles_Users_slb1_mydocuments_New%2520folder_66832.pdf Daley, T.J., Street-Perrott, F.A., Loader, N.J., Barber, K.E., Hughes, P.D.M., Fisher, E.H. and Marshall, J.D. (2009) Terrestrial climate signal of the "8200-yr cold event" in the Labrador Sea region. Geology, 37 (9), 831-834. (doi:10.1130/G30043A.1 <http://dx.doi.org/10.1130/G30043A.1>). Article PeerReviewed 2009 ftsouthampton https://doi.org/10.1130/G30043A.1 2023-07-09T21:05:36Z Accelerated melting of Greenland ice has raised concern about the future impact of enhanced freshwater discharge on regional climate through its effect on ocean circulation. An abrupt cooling event ca. 8200 cal. yr B.P. has been linked to meltwater from the decaying North American ice sheet. Oxygen isotopic analyses of cellulose from subfossil Sphagnum mosses, isolated from a Newfoundland peat core, reveal a pronounced anomaly ca. 8350 yr B.P. with a duration of ~150 years. The maximum estimated ?18Oprecipitation change, 4.53‰ ± 1.05‰ (Vienna Standard Mean Ocean Water), is the largest observed in the circum-North Atlantic region. The magnitude of change exceeds that predicted by recent paleoclimate simulations. Comparisons with recent records of surface and deep ocean proxies in the Labrador Sea and the wider North Atlantic region suggest synchroneity. However, an ~200 year delay between the responses of the Labrador Sea region and the Greenland Ice Sheet to the effects of meltwater release remains to be explained. Article in Journal/Newspaper Greenland Ice Sheet Labrador Sea Newfoundland North Atlantic University of Southampton: e-Prints Soton Newfoundland Greenland Geology 37 9 831 834 |
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Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
Accelerated melting of Greenland ice has raised concern about the future impact of enhanced freshwater discharge on regional climate through its effect on ocean circulation. An abrupt cooling event ca. 8200 cal. yr B.P. has been linked to meltwater from the decaying North American ice sheet. Oxygen isotopic analyses of cellulose from subfossil Sphagnum mosses, isolated from a Newfoundland peat core, reveal a pronounced anomaly ca. 8350 yr B.P. with a duration of ~150 years. The maximum estimated ?18Oprecipitation change, 4.53‰ ± 1.05‰ (Vienna Standard Mean Ocean Water), is the largest observed in the circum-North Atlantic region. The magnitude of change exceeds that predicted by recent paleoclimate simulations. Comparisons with recent records of surface and deep ocean proxies in the Labrador Sea and the wider North Atlantic region suggest synchroneity. However, an ~200 year delay between the responses of the Labrador Sea region and the Greenland Ice Sheet to the effects of meltwater release remains to be explained. |
format |
Article in Journal/Newspaper |
author |
Daley, T.J. Street-Perrott, F.A. Loader, N.J. Barber, K.E. Hughes, P.D.M. Fisher, E.H. Marshall, J.D. |
spellingShingle |
Daley, T.J. Street-Perrott, F.A. Loader, N.J. Barber, K.E. Hughes, P.D.M. Fisher, E.H. Marshall, J.D. Terrestrial climate signal of the "8200-yr cold event" in the Labrador Sea region |
author_facet |
Daley, T.J. Street-Perrott, F.A. Loader, N.J. Barber, K.E. Hughes, P.D.M. Fisher, E.H. Marshall, J.D. |
author_sort |
Daley, T.J. |
title |
Terrestrial climate signal of the "8200-yr cold event" in the Labrador Sea region |
title_short |
Terrestrial climate signal of the "8200-yr cold event" in the Labrador Sea region |
title_full |
Terrestrial climate signal of the "8200-yr cold event" in the Labrador Sea region |
title_fullStr |
Terrestrial climate signal of the "8200-yr cold event" in the Labrador Sea region |
title_full_unstemmed |
Terrestrial climate signal of the "8200-yr cold event" in the Labrador Sea region |
title_sort |
terrestrial climate signal of the "8200-yr cold event" in the labrador sea region |
publishDate |
2009 |
url |
https://eprints.soton.ac.uk/66832/ https://eprints.soton.ac.uk/66832/1/__soton.ac.uk_ude_PersonalFiles_Users_slb1_mydocuments_New%2520folder_66832.pdf |
geographic |
Newfoundland Greenland |
geographic_facet |
Newfoundland Greenland |
genre |
Greenland Ice Sheet Labrador Sea Newfoundland North Atlantic |
genre_facet |
Greenland Ice Sheet Labrador Sea Newfoundland North Atlantic |
op_relation |
https://eprints.soton.ac.uk/66832/1/__soton.ac.uk_ude_PersonalFiles_Users_slb1_mydocuments_New%2520folder_66832.pdf Daley, T.J., Street-Perrott, F.A., Loader, N.J., Barber, K.E., Hughes, P.D.M., Fisher, E.H. and Marshall, J.D. (2009) Terrestrial climate signal of the "8200-yr cold event" in the Labrador Sea region. Geology, 37 (9), 831-834. (doi:10.1130/G30043A.1 <http://dx.doi.org/10.1130/G30043A.1>). |
op_doi |
https://doi.org/10.1130/G30043A.1 |
container_title |
Geology |
container_volume |
37 |
container_issue |
9 |
container_start_page |
831 |
op_container_end_page |
834 |
_version_ |
1772814917746819072 |