Changes in El Niño - Southern Oscillation (ENSO) conditions during the Greenland Stadial 1 (GS-1) chronozone revealed by New Zealand tree-rings
The warming trend at the end of the last glacial was disrupted by rapid cooling clearly identified in Greenland (Greenland Stadial 1 or GS-1) and Europe (Younger Dryas Stadial or YD). This reversal to glacial-like conditions is one of the best known examples of abrupt change but the exact timing and...
Published in: | Quaternary Science Reviews |
---|---|
Main Authors: | , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2017
|
Subjects: | |
Online Access: | http://apo.ansto.gov.au/dspace/handle/10238/8625 https://doi.org/10.1016/j.quascirev.2016.10.003 |
id |
ftansto:oai:apo-prod.ansto.gov.au:10238/8625 |
---|---|
record_format |
openpolar |
spelling |
ftansto:oai:apo-prod.ansto.gov.au:10238/8625 2023-05-15T16:26:54+02:00 Changes in El Niño - Southern Oscillation (ENSO) conditions during the Greenland Stadial 1 (GS-1) chronozone revealed by New Zealand tree-rings Palmer, JG Turney, CSM Cook, ER Fenwick, P Thomas, Z Helle, G Jones, RT Clement, A Hogg, A Southon, J Bronk Ramsey, C Staff, R Muscheler, R Corrège, T Hua, Q 2017-04-26 http://apo.ansto.gov.au/dspace/handle/10238/8625 https://doi.org/10.1016/j.quascirev.2016.10.003 en eng Elsevier Palmer, J. G., Turney, C. S. M., Cook, E. R., Fenwick, P., Thomas, Z., Helle, G., Jones, R., Clement, A., Hogg, A., Southon, J., Bronk Ramsey, C., Staff, R., Muscheler, R., Corrège, & T., Hua, Q. (2016). Changes in El Niño – Southern Oscillation (ENSO) conditions during the Greenland Stadial 1 (GS-1) chronozone revealed by New Zealand tree-rings. Quaternary Science Reviews 153: 139-155. doi:10.1016/j.quascirev.2016.10.003 0277-3791 https://doi.org/10.1016/j.quascirev.2016.10.003 http://apo.ansto.gov.au/dspace/handle/10238/8625 Greenland Oscillations New Zealand Tree rings Cooling Atalntic Ocean Journal Article 2017 ftansto https://doi.org/10.1016/j.quascirev.2016.10.003 2020-08-24T22:28:26Z The warming trend at the end of the last glacial was disrupted by rapid cooling clearly identified in Greenland (Greenland Stadial 1 or GS-1) and Europe (Younger Dryas Stadial or YD). This reversal to glacial-like conditions is one of the best known examples of abrupt change but the exact timing and global spatial extent remain uncertain. Whilst the wider Atlantic region has a network of high-resolution proxy records spanning GS-1, the Pacific Ocean suffers from a scarcity of sub-decadally resolved sequences. Here we report the results from an investigation into a tree-ring chronology from northern New Zealand aimed at addressing the paucity of data. The conifer tree species kauri (Agathis australis) is known from contemporary studies to be sensitive to regional climate changes. An analysis of a ‘historic’ 452-year kauri chronology confirms a tropical-Pacific teleconnection via the El Niño – Southern Oscillation (ENSO). We then focus our study on a 1010-year sub-fossil kauri chronology that has been precisely dated by comprehensive radiocarbon dating and contains a striking ring-width downturn between ∼12,500 and 12,380 cal BP within GS-1. Wavelet analysis shows a marked increase in ENSO-like periodicities occurring after the downturn event. Comparison to low- and mid-latitude Pacific records suggests a coherency with ENSO and Southern Hemisphere atmospheric circulation change during this period. The driver(s) for this climate event remain unclear but may be related to solar changes that subsequently led to establishment and/or increased expression of ENSO across the mid-latitudes of the Pacific, seemingly independent of the Atlantic and polar regions. © 2016, Elsevier Ltd. Article in Journal/Newspaper Greenland Australian Nuclear Science and Technology Organisation: ANSTO Publications Online Greenland New Zealand Pacific Quaternary Science Reviews 153 139 155 |
institution |
Open Polar |
collection |
Australian Nuclear Science and Technology Organisation: ANSTO Publications Online |
op_collection_id |
ftansto |
language |
English |
topic |
Greenland Oscillations New Zealand Tree rings Cooling Atalntic Ocean |
spellingShingle |
Greenland Oscillations New Zealand Tree rings Cooling Atalntic Ocean Palmer, JG Turney, CSM Cook, ER Fenwick, P Thomas, Z Helle, G Jones, RT Clement, A Hogg, A Southon, J Bronk Ramsey, C Staff, R Muscheler, R Corrège, T Hua, Q Changes in El Niño - Southern Oscillation (ENSO) conditions during the Greenland Stadial 1 (GS-1) chronozone revealed by New Zealand tree-rings |
topic_facet |
Greenland Oscillations New Zealand Tree rings Cooling Atalntic Ocean |
description |
The warming trend at the end of the last glacial was disrupted by rapid cooling clearly identified in Greenland (Greenland Stadial 1 or GS-1) and Europe (Younger Dryas Stadial or YD). This reversal to glacial-like conditions is one of the best known examples of abrupt change but the exact timing and global spatial extent remain uncertain. Whilst the wider Atlantic region has a network of high-resolution proxy records spanning GS-1, the Pacific Ocean suffers from a scarcity of sub-decadally resolved sequences. Here we report the results from an investigation into a tree-ring chronology from northern New Zealand aimed at addressing the paucity of data. The conifer tree species kauri (Agathis australis) is known from contemporary studies to be sensitive to regional climate changes. An analysis of a ‘historic’ 452-year kauri chronology confirms a tropical-Pacific teleconnection via the El Niño – Southern Oscillation (ENSO). We then focus our study on a 1010-year sub-fossil kauri chronology that has been precisely dated by comprehensive radiocarbon dating and contains a striking ring-width downturn between ∼12,500 and 12,380 cal BP within GS-1. Wavelet analysis shows a marked increase in ENSO-like periodicities occurring after the downturn event. Comparison to low- and mid-latitude Pacific records suggests a coherency with ENSO and Southern Hemisphere atmospheric circulation change during this period. The driver(s) for this climate event remain unclear but may be related to solar changes that subsequently led to establishment and/or increased expression of ENSO across the mid-latitudes of the Pacific, seemingly independent of the Atlantic and polar regions. © 2016, Elsevier Ltd. |
format |
Article in Journal/Newspaper |
author |
Palmer, JG Turney, CSM Cook, ER Fenwick, P Thomas, Z Helle, G Jones, RT Clement, A Hogg, A Southon, J Bronk Ramsey, C Staff, R Muscheler, R Corrège, T Hua, Q |
author_facet |
Palmer, JG Turney, CSM Cook, ER Fenwick, P Thomas, Z Helle, G Jones, RT Clement, A Hogg, A Southon, J Bronk Ramsey, C Staff, R Muscheler, R Corrège, T Hua, Q |
author_sort |
Palmer, JG |
title |
Changes in El Niño - Southern Oscillation (ENSO) conditions during the Greenland Stadial 1 (GS-1) chronozone revealed by New Zealand tree-rings |
title_short |
Changes in El Niño - Southern Oscillation (ENSO) conditions during the Greenland Stadial 1 (GS-1) chronozone revealed by New Zealand tree-rings |
title_full |
Changes in El Niño - Southern Oscillation (ENSO) conditions during the Greenland Stadial 1 (GS-1) chronozone revealed by New Zealand tree-rings |
title_fullStr |
Changes in El Niño - Southern Oscillation (ENSO) conditions during the Greenland Stadial 1 (GS-1) chronozone revealed by New Zealand tree-rings |
title_full_unstemmed |
Changes in El Niño - Southern Oscillation (ENSO) conditions during the Greenland Stadial 1 (GS-1) chronozone revealed by New Zealand tree-rings |
title_sort |
changes in el niño - southern oscillation (enso) conditions during the greenland stadial 1 (gs-1) chronozone revealed by new zealand tree-rings |
publisher |
Elsevier |
publishDate |
2017 |
url |
http://apo.ansto.gov.au/dspace/handle/10238/8625 https://doi.org/10.1016/j.quascirev.2016.10.003 |
geographic |
Greenland New Zealand Pacific |
geographic_facet |
Greenland New Zealand Pacific |
genre |
Greenland |
genre_facet |
Greenland |
op_relation |
Palmer, J. G., Turney, C. S. M., Cook, E. R., Fenwick, P., Thomas, Z., Helle, G., Jones, R., Clement, A., Hogg, A., Southon, J., Bronk Ramsey, C., Staff, R., Muscheler, R., Corrège, & T., Hua, Q. (2016). Changes in El Niño – Southern Oscillation (ENSO) conditions during the Greenland Stadial 1 (GS-1) chronozone revealed by New Zealand tree-rings. Quaternary Science Reviews 153: 139-155. doi:10.1016/j.quascirev.2016.10.003 0277-3791 https://doi.org/10.1016/j.quascirev.2016.10.003 http://apo.ansto.gov.au/dspace/handle/10238/8625 |
op_doi |
https://doi.org/10.1016/j.quascirev.2016.10.003 |
container_title |
Quaternary Science Reviews |
container_volume |
153 |
container_start_page |
139 |
op_container_end_page |
155 |
_version_ |
1766015915703402496 |