Interdecadal pacific variability and eastern Australian megadroughts over the last millennium
The Interdecadal Pacific Oscillation (IPO) influences multidecadal drought risk across the Pacific, but there are no millennial-length, high-resolution IPO reconstructions for quantifying long-term drought risk. In Australia, drought risk increases in positive phases of the IPO, yet few suitable rai...
Main Authors: | , , , , |
---|---|
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley-Blackwell
2015
|
Subjects: | |
Online Access: | http://hdl.handle.net/1959.13/1333868 |
id |
ftunivnewcastnsw:uon:27167 |
---|---|
record_format |
openpolar |
spelling |
ftunivnewcastnsw:uon:27167 2023-05-15T13:45:38+02:00 Interdecadal pacific variability and eastern Australian megadroughts over the last millennium Vance, T. R. Roberts, J. L. Plummer, C. T. Kiem, A. S. van Ommen, T. D. The University of Newcastle. Faculty of Science & Information Technology, School of Environmental and Life Sciences 2015 http://hdl.handle.net/1959.13/1333868 eng eng Wiley-Blackwell Geophysical Research Letters Vol. 42, Issue 1, p. 129-137 10.1002/2014GL062447 Accepted for publication in Geophysical Research Letters. Copyright (2015) American Geophysical Union. Further reproduction or electronic distribution is not permitted. Interdecadal Pacific Oscillation (IPO) drought risk Indian Ocean easter Australia journal article 2015 ftunivnewcastnsw 2019-09-23T22:24:34Z The Interdecadal Pacific Oscillation (IPO) influences multidecadal drought risk across the Pacific, but there are no millennial-length, high-resolution IPO reconstructions for quantifying long-term drought risk. In Australia, drought risk increases in positive phases of the IPO, yet few suitable rainfall proxies and short (~100 years) instrumental records mean large uncertainties remain around drought frequency and duration. Likewise, it is unknown whether megadroughts have occurred in Australia's past. In this study, an atmospheric teleconnection in the Indian Ocean midlatitudes linking East Antarctica and Australia is exploited to produce the first accurate, annually dated millennial-length IPO reconstruction from the Law Dome (East Antarctica) ice core. Combined with an eastern Australian rainfall proxy from Law Dome, the first millennial-length Australian megadrought (>5 year duration) reconstruction is presented. Eight megadroughts are identified including one 39 year drought (A.D. 1174-1212), which occurred during an unprecedented century of aridity (A.D. 1102-1212). Article in Journal/Newspaper Antarc* Antarctica East Antarctica ice core NOVA: The University of Newcastle Research Online (Australia) Dome The ENVELOPE(166.000,166.000,-85.367,-85.367) East Antarctica Indian Law Dome ENVELOPE(112.833,112.833,-66.733,-66.733) Pacific |
institution |
Open Polar |
collection |
NOVA: The University of Newcastle Research Online (Australia) |
op_collection_id |
ftunivnewcastnsw |
language |
English |
topic |
Interdecadal Pacific Oscillation (IPO) drought risk Indian Ocean easter Australia |
spellingShingle |
Interdecadal Pacific Oscillation (IPO) drought risk Indian Ocean easter Australia Vance, T. R. Roberts, J. L. Plummer, C. T. Kiem, A. S. van Ommen, T. D. Interdecadal pacific variability and eastern Australian megadroughts over the last millennium |
topic_facet |
Interdecadal Pacific Oscillation (IPO) drought risk Indian Ocean easter Australia |
description |
The Interdecadal Pacific Oscillation (IPO) influences multidecadal drought risk across the Pacific, but there are no millennial-length, high-resolution IPO reconstructions for quantifying long-term drought risk. In Australia, drought risk increases in positive phases of the IPO, yet few suitable rainfall proxies and short (~100 years) instrumental records mean large uncertainties remain around drought frequency and duration. Likewise, it is unknown whether megadroughts have occurred in Australia's past. In this study, an atmospheric teleconnection in the Indian Ocean midlatitudes linking East Antarctica and Australia is exploited to produce the first accurate, annually dated millennial-length IPO reconstruction from the Law Dome (East Antarctica) ice core. Combined with an eastern Australian rainfall proxy from Law Dome, the first millennial-length Australian megadrought (>5 year duration) reconstruction is presented. Eight megadroughts are identified including one 39 year drought (A.D. 1174-1212), which occurred during an unprecedented century of aridity (A.D. 1102-1212). |
author2 |
The University of Newcastle. Faculty of Science & Information Technology, School of Environmental and Life Sciences |
format |
Article in Journal/Newspaper |
author |
Vance, T. R. Roberts, J. L. Plummer, C. T. Kiem, A. S. van Ommen, T. D. |
author_facet |
Vance, T. R. Roberts, J. L. Plummer, C. T. Kiem, A. S. van Ommen, T. D. |
author_sort |
Vance, T. R. |
title |
Interdecadal pacific variability and eastern Australian megadroughts over the last millennium |
title_short |
Interdecadal pacific variability and eastern Australian megadroughts over the last millennium |
title_full |
Interdecadal pacific variability and eastern Australian megadroughts over the last millennium |
title_fullStr |
Interdecadal pacific variability and eastern Australian megadroughts over the last millennium |
title_full_unstemmed |
Interdecadal pacific variability and eastern Australian megadroughts over the last millennium |
title_sort |
interdecadal pacific variability and eastern australian megadroughts over the last millennium |
publisher |
Wiley-Blackwell |
publishDate |
2015 |
url |
http://hdl.handle.net/1959.13/1333868 |
long_lat |
ENVELOPE(166.000,166.000,-85.367,-85.367) ENVELOPE(112.833,112.833,-66.733,-66.733) |
geographic |
Dome The East Antarctica Indian Law Dome Pacific |
geographic_facet |
Dome The East Antarctica Indian Law Dome Pacific |
genre |
Antarc* Antarctica East Antarctica ice core |
genre_facet |
Antarc* Antarctica East Antarctica ice core |
op_relation |
Geophysical Research Letters Vol. 42, Issue 1, p. 129-137 10.1002/2014GL062447 |
op_rights |
Accepted for publication in Geophysical Research Letters. Copyright (2015) American Geophysical Union. Further reproduction or electronic distribution is not permitted. |
_version_ |
1766228731337113600 |