Interdecadal Pacific Oscillation Drives Enhanced Greenland Surface Temperature Variability During the Last Glacial Maximum
Stable oxygen isotope records from central Greenland suggest disproportionally large long‐term surface air temperature (SAT) variability during the Last Glacial Maximum (LGM) relative to preindustrial times. Large perturbations in mean atmospheric circulation and its variability forced by extensive...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
AGU (American Geophysical Union)
2020
|
Subjects: | |
Online Access: | https://oceanrep.geomar.de/id/eprint/51271/ https://oceanrep.geomar.de/id/eprint/51271/1/2020GL088922.pdf https://oceanrep.geomar.de/id/eprint/51271/2/grl61599-sup-0001-2020gl088922-si.docx https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020GL088922 https://doi.org/10.1029/2020GL088922 |
id |
ftoceanrep:oai:oceanrep.geomar.de:51271 |
---|---|
record_format |
openpolar |
spelling |
ftoceanrep:oai:oceanrep.geomar.de:51271 2023-05-15T16:23:26+02:00 Interdecadal Pacific Oscillation Drives Enhanced Greenland Surface Temperature Variability During the Last Glacial Maximum Song, Zhaoyang Latif, Mojib Park, Wonsun Zhang, Yuming 2020-12-16 text https://oceanrep.geomar.de/id/eprint/51271/ https://oceanrep.geomar.de/id/eprint/51271/1/2020GL088922.pdf https://oceanrep.geomar.de/id/eprint/51271/2/grl61599-sup-0001-2020gl088922-si.docx https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020GL088922 https://doi.org/10.1029/2020GL088922 en eng AGU (American Geophysical Union) Wiley https://oceanrep.geomar.de/id/eprint/51271/1/2020GL088922.pdf https://oceanrep.geomar.de/id/eprint/51271/2/grl61599-sup-0001-2020gl088922-si.docx Song, Z. , Latif, M. , Park, W. and Zhang, Y. (2020) Interdecadal Pacific Oscillation Drives Enhanced Greenland Surface Temperature Variability During the Last Glacial Maximum. Open Access Geophysical Research Letters, 47 (23). Art.Nr. e2020GL088922. DOI 10.1029/2020GL088922 <https://doi.org/10.1029/2020GL088922>. doi:10.1029/2020GL088922 cc_by_nc_4.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2020 ftoceanrep https://doi.org/10.1029/2020GL088922 2023-04-07T15:53:19Z Stable oxygen isotope records from central Greenland suggest disproportionally large long‐term surface air temperature (SAT) variability during the Last Glacial Maximum (LGM) relative to preindustrial times. Large perturbations in mean atmospheric circulation and its variability forced by extensive Northern Hemisphere ice sheet coverage have been suggested as cause for the enhanced Greenland SAT variability. Here, we assess the factors driving Greenland SAT variability during the LGM by means of dedicated climate model simulations and find remote forcing from the Pacific of critical importance. Atmospheric teleconnections from the Interdecadal Pacific Oscillation (IPO), a multidecadal oscillation of sea surface temperature in the Pacific Ocean, strongly intensify under LGM conditions, driving enhanced surface wind variability over Greenland, which in turn amplifies SAT variability by anomalous atmospheric heat transport. A major role of the IPO in forcing Greenland SAT variability also is supported by a number of models from the Paleoclimate Modeling Intercomparison Project Phase III Article in Journal/Newspaper Greenland Ice Sheet OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Greenland Pacific Geophysical Research Letters 47 23 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Stable oxygen isotope records from central Greenland suggest disproportionally large long‐term surface air temperature (SAT) variability during the Last Glacial Maximum (LGM) relative to preindustrial times. Large perturbations in mean atmospheric circulation and its variability forced by extensive Northern Hemisphere ice sheet coverage have been suggested as cause for the enhanced Greenland SAT variability. Here, we assess the factors driving Greenland SAT variability during the LGM by means of dedicated climate model simulations and find remote forcing from the Pacific of critical importance. Atmospheric teleconnections from the Interdecadal Pacific Oscillation (IPO), a multidecadal oscillation of sea surface temperature in the Pacific Ocean, strongly intensify under LGM conditions, driving enhanced surface wind variability over Greenland, which in turn amplifies SAT variability by anomalous atmospheric heat transport. A major role of the IPO in forcing Greenland SAT variability also is supported by a number of models from the Paleoclimate Modeling Intercomparison Project Phase III |
format |
Article in Journal/Newspaper |
author |
Song, Zhaoyang Latif, Mojib Park, Wonsun Zhang, Yuming |
spellingShingle |
Song, Zhaoyang Latif, Mojib Park, Wonsun Zhang, Yuming Interdecadal Pacific Oscillation Drives Enhanced Greenland Surface Temperature Variability During the Last Glacial Maximum |
author_facet |
Song, Zhaoyang Latif, Mojib Park, Wonsun Zhang, Yuming |
author_sort |
Song, Zhaoyang |
title |
Interdecadal Pacific Oscillation Drives Enhanced Greenland Surface Temperature Variability During the Last Glacial Maximum |
title_short |
Interdecadal Pacific Oscillation Drives Enhanced Greenland Surface Temperature Variability During the Last Glacial Maximum |
title_full |
Interdecadal Pacific Oscillation Drives Enhanced Greenland Surface Temperature Variability During the Last Glacial Maximum |
title_fullStr |
Interdecadal Pacific Oscillation Drives Enhanced Greenland Surface Temperature Variability During the Last Glacial Maximum |
title_full_unstemmed |
Interdecadal Pacific Oscillation Drives Enhanced Greenland Surface Temperature Variability During the Last Glacial Maximum |
title_sort |
interdecadal pacific oscillation drives enhanced greenland surface temperature variability during the last glacial maximum |
publisher |
AGU (American Geophysical Union) |
publishDate |
2020 |
url |
https://oceanrep.geomar.de/id/eprint/51271/ https://oceanrep.geomar.de/id/eprint/51271/1/2020GL088922.pdf https://oceanrep.geomar.de/id/eprint/51271/2/grl61599-sup-0001-2020gl088922-si.docx https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020GL088922 https://doi.org/10.1029/2020GL088922 |
geographic |
Greenland Pacific |
geographic_facet |
Greenland Pacific |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_relation |
https://oceanrep.geomar.de/id/eprint/51271/1/2020GL088922.pdf https://oceanrep.geomar.de/id/eprint/51271/2/grl61599-sup-0001-2020gl088922-si.docx Song, Z. , Latif, M. , Park, W. and Zhang, Y. (2020) Interdecadal Pacific Oscillation Drives Enhanced Greenland Surface Temperature Variability During the Last Glacial Maximum. Open Access Geophysical Research Letters, 47 (23). Art.Nr. e2020GL088922. DOI 10.1029/2020GL088922 <https://doi.org/10.1029/2020GL088922>. doi:10.1029/2020GL088922 |
op_rights |
cc_by_nc_4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2020GL088922 |
container_title |
Geophysical Research Letters |
container_volume |
47 |
container_issue |
23 |
_version_ |
1766011696672931840 |