Antarctic temperature variability and change from station data
Variability and change in near‐surface air temperature at 17 Antarctic stations is examined using data from the SCAR READER database. We consider the relationships between temperature, and atmospheric circulation, sea ice concentration and forcing by the tropical oceans. All 17 stations have their l...
Published in: | International Journal of Climatology |
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Royal Meteorological Society
2020
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Online Access: | http://nora.nerc.ac.uk/id/eprint/523672/ https://nora.nerc.ac.uk/id/eprint/523672/1/joc.6378.pdf https://rmets.onlinelibrary.wiley.com/doi/abs/10.1002/joc.6378 |
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ftnerc:oai:nora.nerc.ac.uk:523672 2023-05-15T13:24:15+02:00 Antarctic temperature variability and change from station data Turner, John Marshall, Gareth Clem, Kyle Colwell, Steve Phillips, Tony Lu, Hua 2020-05 text http://nora.nerc.ac.uk/id/eprint/523672/ https://nora.nerc.ac.uk/id/eprint/523672/1/joc.6378.pdf https://rmets.onlinelibrary.wiley.com/doi/abs/10.1002/joc.6378 en eng Royal Meteorological Society https://nora.nerc.ac.uk/id/eprint/523672/1/joc.6378.pdf Turner, John orcid:0000-0002-6111-5122 Marshall, Gareth orcid:0000-0001-8887-7314 Clem, Kyle; Colwell, Steve; Phillips, Tony orcid:0000-0002-3058-9157 Lu, Hua orcid:0000-0001-9485-5082 . 2020 Antarctic temperature variability and change from station data. International Journal of Climatology, 40 (6). 2986-3007. https://doi.org/10.1002/joc.6378 <https://doi.org/10.1002/joc.6378> Publication - Article PeerReviewed 2020 ftnerc https://doi.org/10.1002/joc.6378 2023-02-04T19:48:32Z Variability and change in near‐surface air temperature at 17 Antarctic stations is examined using data from the SCAR READER database. We consider the relationships between temperature, and atmospheric circulation, sea ice concentration and forcing by the tropical oceans. All 17 stations have their largest inter‐annual temperature variability during the winter and the annual mean temperature anomalies are dominated by winter temperatures. The large inter‐annual temperature variability on the western Antarctic Peninsula has decreased over the instrumental period as sea ice has declined. Variability in the phase of the SAM exerts the greatest control of temperatures, although tropical Pacific forcing has also played a large part, along with local atmospheric circulation variability at some locations. The relationship of positive (negative) SAM and high (low) Peninsula and low (high) East Antarctic temperatures was not present before the mid‐1970s. Thirteen of the 17 stations have experienced a positive trend in their annual mean temperature over the full length of their record, with the largest being at Vernadsky (formerly Faraday) (0.46° ± 0.15 C dec−1) on the western side of the Antarctic Peninsula. The deepening of the Amundsen Sea Low as a result of the more positive SAM and changes in the IPO and PDO have contributed to the warming of the Peninsula. Beyond the Antarctic Peninsula there has been little significant change in temperature. The two plateau stations had a small cooling from the late 1970s to the late 1990s consistent with the SAM becoming positive, but have subsequently warmed. During spring there has been an Antarctic‐wide warming, with all but one station having experienced an increase in temperature, although the only trends that were significant were at Vostok, Scott base, Vernadsky and Amundsen‐Scott. In this season much of the Peninsula/West Antarctic warming can be attributed to tropical Pacific forcing through the IPO/PDO. Article in Journal/Newspaper Amundsen Sea Amundsen-Scott Antarc* Antarctic Antarctic Peninsula Sea ice Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Antarctic Peninsula Amundsen Sea Pacific Amundsen-Scott ENVELOPE(0.000,0.000,-90.000,-90.000) Faraday ENVELOPE(-64.256,-64.256,-65.246,-65.246) Scott Base ENVELOPE(166.766,166.766,-77.849,-77.849) Low Peninsula ENVELOPE(-100.668,-100.668,59.515,59.515) International Journal of Climatology 40 6 2986 3007 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Variability and change in near‐surface air temperature at 17 Antarctic stations is examined using data from the SCAR READER database. We consider the relationships between temperature, and atmospheric circulation, sea ice concentration and forcing by the tropical oceans. All 17 stations have their largest inter‐annual temperature variability during the winter and the annual mean temperature anomalies are dominated by winter temperatures. The large inter‐annual temperature variability on the western Antarctic Peninsula has decreased over the instrumental period as sea ice has declined. Variability in the phase of the SAM exerts the greatest control of temperatures, although tropical Pacific forcing has also played a large part, along with local atmospheric circulation variability at some locations. The relationship of positive (negative) SAM and high (low) Peninsula and low (high) East Antarctic temperatures was not present before the mid‐1970s. Thirteen of the 17 stations have experienced a positive trend in their annual mean temperature over the full length of their record, with the largest being at Vernadsky (formerly Faraday) (0.46° ± 0.15 C dec−1) on the western side of the Antarctic Peninsula. The deepening of the Amundsen Sea Low as a result of the more positive SAM and changes in the IPO and PDO have contributed to the warming of the Peninsula. Beyond the Antarctic Peninsula there has been little significant change in temperature. The two plateau stations had a small cooling from the late 1970s to the late 1990s consistent with the SAM becoming positive, but have subsequently warmed. During spring there has been an Antarctic‐wide warming, with all but one station having experienced an increase in temperature, although the only trends that were significant were at Vostok, Scott base, Vernadsky and Amundsen‐Scott. In this season much of the Peninsula/West Antarctic warming can be attributed to tropical Pacific forcing through the IPO/PDO. |
format |
Article in Journal/Newspaper |
author |
Turner, John Marshall, Gareth Clem, Kyle Colwell, Steve Phillips, Tony Lu, Hua |
spellingShingle |
Turner, John Marshall, Gareth Clem, Kyle Colwell, Steve Phillips, Tony Lu, Hua Antarctic temperature variability and change from station data |
author_facet |
Turner, John Marshall, Gareth Clem, Kyle Colwell, Steve Phillips, Tony Lu, Hua |
author_sort |
Turner, John |
title |
Antarctic temperature variability and change from station data |
title_short |
Antarctic temperature variability and change from station data |
title_full |
Antarctic temperature variability and change from station data |
title_fullStr |
Antarctic temperature variability and change from station data |
title_full_unstemmed |
Antarctic temperature variability and change from station data |
title_sort |
antarctic temperature variability and change from station data |
publisher |
Royal Meteorological Society |
publishDate |
2020 |
url |
http://nora.nerc.ac.uk/id/eprint/523672/ https://nora.nerc.ac.uk/id/eprint/523672/1/joc.6378.pdf https://rmets.onlinelibrary.wiley.com/doi/abs/10.1002/joc.6378 |
long_lat |
ENVELOPE(0.000,0.000,-90.000,-90.000) ENVELOPE(-64.256,-64.256,-65.246,-65.246) ENVELOPE(166.766,166.766,-77.849,-77.849) ENVELOPE(-100.668,-100.668,59.515,59.515) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Amundsen Sea Pacific Amundsen-Scott Faraday Scott Base Low Peninsula |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Amundsen Sea Pacific Amundsen-Scott Faraday Scott Base Low Peninsula |
genre |
Amundsen Sea Amundsen-Scott Antarc* Antarctic Antarctic Peninsula Sea ice |
genre_facet |
Amundsen Sea Amundsen-Scott Antarc* Antarctic Antarctic Peninsula Sea ice |
op_relation |
https://nora.nerc.ac.uk/id/eprint/523672/1/joc.6378.pdf Turner, John orcid:0000-0002-6111-5122 Marshall, Gareth orcid:0000-0001-8887-7314 Clem, Kyle; Colwell, Steve; Phillips, Tony orcid:0000-0002-3058-9157 Lu, Hua orcid:0000-0001-9485-5082 . 2020 Antarctic temperature variability and change from station data. International Journal of Climatology, 40 (6). 2986-3007. https://doi.org/10.1002/joc.6378 <https://doi.org/10.1002/joc.6378> |
op_doi |
https://doi.org/10.1002/joc.6378 |
container_title |
International Journal of Climatology |
container_volume |
40 |
container_issue |
6 |
container_start_page |
2986 |
op_container_end_page |
3007 |
_version_ |
1766378303752503296 |