The effects of joint ENSO–Antarctic Oscillation forcing on the McMurdo Dry Valleys, Antarctica
Stable oxygen analyses and snow accumulation rates from snow pits sampled in the McMurdo Dry Valleys have been used to reconstruct variations in summer temperature and moisture availability over the last four decades. The temperature data show a common interannual variability, with strong regional w...
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crcambridgeupr:10.1017/s0954102006000551 2024-03-03T08:38:54+00:00 The effects of joint ENSO–Antarctic Oscillation forcing on the McMurdo Dry Valleys, Antarctica Bertler, N.A.N. Naish, T.R. Oerter, H. Kipfstuhl, S. Barrett, P.J. Mayewski, P.A. Kreutz, K. 2006 http://dx.doi.org/10.1017/s0954102006000551 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102006000551 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 18, issue 4, page 507-514 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2006 crcambridgeupr https://doi.org/10.1017/s0954102006000551 2024-02-08T08:48:42Z Stable oxygen analyses and snow accumulation rates from snow pits sampled in the McMurdo Dry Valleys have been used to reconstruct variations in summer temperature and moisture availability over the last four decades. The temperature data show a common interannual variability, with strong regional warmings occurring especially in 1984/85, 1995/96 and 1990/91 and profound coolings during 1977/78, 1983/84, 1988/89, 1993/94, and 1996/97. Annual snow accumulation shows a larger variance between sites, but the early 1970s, 1984, 1997, and to a lesser degree 1990/91 are characterized overall by wetter conditions, while the early and late 1980s show low snow accumulation values. Comparison of the reconstructed and measured summer temperatures with the Southern Oscillation Index (SOI) and the Antarctic Oscillation (AAO) yield statistically significant correlations, which improve when phase-relationships are considered. A distinct change in the phase relationship of the correlation is observed, with the SOI-AAO leading over the temperature records by one year before, and lagging by one year after 1988. These results suggest that over the last two decades summer temperatures are influenced by opposing El Niño Southern Oscillation and AAO forcings and support previous studies that identified a change in the Tropical-Antarctic teleconnection between the 1980s and 1990s. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica McMurdo Dry Valleys Cambridge University Press Antarctic The Antarctic McMurdo Dry Valleys Soi ENVELOPE(30.704,30.704,66.481,66.481) Antarctic Science 18 4 507 514 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Bertler, N.A.N. Naish, T.R. Oerter, H. Kipfstuhl, S. Barrett, P.J. Mayewski, P.A. Kreutz, K. The effects of joint ENSO–Antarctic Oscillation forcing on the McMurdo Dry Valleys, Antarctica |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Stable oxygen analyses and snow accumulation rates from snow pits sampled in the McMurdo Dry Valleys have been used to reconstruct variations in summer temperature and moisture availability over the last four decades. The temperature data show a common interannual variability, with strong regional warmings occurring especially in 1984/85, 1995/96 and 1990/91 and profound coolings during 1977/78, 1983/84, 1988/89, 1993/94, and 1996/97. Annual snow accumulation shows a larger variance between sites, but the early 1970s, 1984, 1997, and to a lesser degree 1990/91 are characterized overall by wetter conditions, while the early and late 1980s show low snow accumulation values. Comparison of the reconstructed and measured summer temperatures with the Southern Oscillation Index (SOI) and the Antarctic Oscillation (AAO) yield statistically significant correlations, which improve when phase-relationships are considered. A distinct change in the phase relationship of the correlation is observed, with the SOI-AAO leading over the temperature records by one year before, and lagging by one year after 1988. These results suggest that over the last two decades summer temperatures are influenced by opposing El Niño Southern Oscillation and AAO forcings and support previous studies that identified a change in the Tropical-Antarctic teleconnection between the 1980s and 1990s. |
format |
Article in Journal/Newspaper |
author |
Bertler, N.A.N. Naish, T.R. Oerter, H. Kipfstuhl, S. Barrett, P.J. Mayewski, P.A. Kreutz, K. |
author_facet |
Bertler, N.A.N. Naish, T.R. Oerter, H. Kipfstuhl, S. Barrett, P.J. Mayewski, P.A. Kreutz, K. |
author_sort |
Bertler, N.A.N. |
title |
The effects of joint ENSO–Antarctic Oscillation forcing on the McMurdo Dry Valleys, Antarctica |
title_short |
The effects of joint ENSO–Antarctic Oscillation forcing on the McMurdo Dry Valleys, Antarctica |
title_full |
The effects of joint ENSO–Antarctic Oscillation forcing on the McMurdo Dry Valleys, Antarctica |
title_fullStr |
The effects of joint ENSO–Antarctic Oscillation forcing on the McMurdo Dry Valleys, Antarctica |
title_full_unstemmed |
The effects of joint ENSO–Antarctic Oscillation forcing on the McMurdo Dry Valleys, Antarctica |
title_sort |
effects of joint enso–antarctic oscillation forcing on the mcmurdo dry valleys, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
2006 |
url |
http://dx.doi.org/10.1017/s0954102006000551 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102006000551 |
long_lat |
ENVELOPE(30.704,30.704,66.481,66.481) |
geographic |
Antarctic The Antarctic McMurdo Dry Valleys Soi |
geographic_facet |
Antarctic The Antarctic McMurdo Dry Valleys Soi |
genre |
Antarc* Antarctic Antarctic Science Antarctica McMurdo Dry Valleys |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica McMurdo Dry Valleys |
op_source |
Antarctic Science volume 18, issue 4, page 507-514 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102006000551 |
container_title |
Antarctic Science |
container_volume |
18 |
container_issue |
4 |
container_start_page |
507 |
op_container_end_page |
514 |
_version_ |
1792507377643159552 |