Temperature variation in the South Orkney Islands, maritime Antarctic
Meteorological records at Signy Station in the South Orkney Islands (SOIs) have recently been digitized to cover the period of 1947–1995. This study compares the newly available near-surface air temperatures at Signy with those from a nearby station, Orcadas and with reanalysis datasets to provide a...
Published in: | International Journal of Climatology |
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Main Authors: | , , , , , , , , , |
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Language: | English |
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Wiley/RMetS
2023
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Online Access: | http://nora.nerc.ac.uk/id/eprint/535840/ https://nora.nerc.ac.uk/id/eprint/535840/1/Intl%20Journal%20of%20Climatology%20-%202023%20-%20Lu%20-%20Temperature%20variation%20in%20the%20South%20Orkney%20Islands%20%20maritime%20Antarctic.pdf https://rmets.onlinelibrary.wiley.com/doi/full/10.1002/joc.8302 |
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ftnerc:oai:nora.nerc.ac.uk:535840 2024-01-28T10:01:43+01:00 Temperature variation in the South Orkney Islands, maritime Antarctic Lu, Hua Colwell, Steve King, John Orr, Andrew Phillips, Tony Dobb, Emilia Xue, Jonathan Kucieba, Sabina Phillips, Guy Marshall, Gareth 2023-12-30 text http://nora.nerc.ac.uk/id/eprint/535840/ https://nora.nerc.ac.uk/id/eprint/535840/1/Intl%20Journal%20of%20Climatology%20-%202023%20-%20Lu%20-%20Temperature%20variation%20in%20the%20South%20Orkney%20Islands%20%20maritime%20Antarctic.pdf https://rmets.onlinelibrary.wiley.com/doi/full/10.1002/joc.8302 en eng Wiley/RMetS https://nora.nerc.ac.uk/id/eprint/535840/1/Intl%20Journal%20of%20Climatology%20-%202023%20-%20Lu%20-%20Temperature%20variation%20in%20the%20South%20Orkney%20Islands%20%20maritime%20Antarctic.pdf Lu, Hua orcid:0000-0001-9485-5082 Colwell, Steve; King, John orcid:0000-0003-3315-7568 Orr, Andrew orcid:0000-0001-5111-8402 Phillips, Tony orcid:0000-0002-3058-9157 Dobb, Emilia; Xue, Jonathan; Kucieba, Sabina; Phillips, Guy; Marshall, Gareth orcid:0000-0001-8887-7314 . 2023 Temperature variation in the South Orkney Islands, maritime Antarctic. International Journal of Climatology, 43 (16). 7987-8004. https://doi.org/10.1002/joc.8302 <https://doi.org/10.1002/joc.8302> cc_by_4 Publication - Article PeerReviewed 2023 ftnerc https://doi.org/10.1002/joc.8302 2023-12-29T00:03:17Z Meteorological records at Signy Station in the South Orkney Islands (SOIs) have recently been digitized to cover the period of 1947–1995. This study compares the newly available near-surface air temperatures at Signy with those from a nearby station, Orcadas and with reanalysis datasets to provide a more comprehensive picture of the weather and climate variability in the SOIs. Temperatures from both stations show a higher degree of variability in winter than summer, but the variability differs in terms of its relationship to the dominant wind directions and sea ice influences. The two stations differ markedly in terms of their respective warm temperature events, largely due to orography-induced föhn winds at Signy Station as northwesterlies flow over Coronation Island. ERA5 reproduces the monthly to annual averages exceedingly well but underestimates both cold and warm tails of station temperatures. Temperature trends in the SOIs are also considered in terms of changes in large-scale circulation and the sea surface temperature over the Brazil-Falkland Confluence. However, caution is required in interpreting the long-term temperature trends estimated from reanalysis data as most of the reanalyses show a cold bias before 1979, which is most likely caused by misrepresentation of the sea ice. Article in Journal/Newspaper Antarc* Antarctic Coronation Island Sea ice South Orkney Islands Natural Environment Research Council: NERC Open Research Archive Antarctic Coronation Island ENVELOPE(-45.588,-45.588,-60.595,-60.595) Orcadas ENVELOPE(-44.717,-44.717,-60.750,-60.750) Signy Station ENVELOPE(-45.600,-45.600,-60.717,-60.717) South Orkney Islands ENVELOPE(-45.500,-45.500,-60.583,-60.583) International Journal of Climatology |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Meteorological records at Signy Station in the South Orkney Islands (SOIs) have recently been digitized to cover the period of 1947–1995. This study compares the newly available near-surface air temperatures at Signy with those from a nearby station, Orcadas and with reanalysis datasets to provide a more comprehensive picture of the weather and climate variability in the SOIs. Temperatures from both stations show a higher degree of variability in winter than summer, but the variability differs in terms of its relationship to the dominant wind directions and sea ice influences. The two stations differ markedly in terms of their respective warm temperature events, largely due to orography-induced föhn winds at Signy Station as northwesterlies flow over Coronation Island. ERA5 reproduces the monthly to annual averages exceedingly well but underestimates both cold and warm tails of station temperatures. Temperature trends in the SOIs are also considered in terms of changes in large-scale circulation and the sea surface temperature over the Brazil-Falkland Confluence. However, caution is required in interpreting the long-term temperature trends estimated from reanalysis data as most of the reanalyses show a cold bias before 1979, which is most likely caused by misrepresentation of the sea ice. |
format |
Article in Journal/Newspaper |
author |
Lu, Hua Colwell, Steve King, John Orr, Andrew Phillips, Tony Dobb, Emilia Xue, Jonathan Kucieba, Sabina Phillips, Guy Marshall, Gareth |
spellingShingle |
Lu, Hua Colwell, Steve King, John Orr, Andrew Phillips, Tony Dobb, Emilia Xue, Jonathan Kucieba, Sabina Phillips, Guy Marshall, Gareth Temperature variation in the South Orkney Islands, maritime Antarctic |
author_facet |
Lu, Hua Colwell, Steve King, John Orr, Andrew Phillips, Tony Dobb, Emilia Xue, Jonathan Kucieba, Sabina Phillips, Guy Marshall, Gareth |
author_sort |
Lu, Hua |
title |
Temperature variation in the South Orkney Islands, maritime Antarctic |
title_short |
Temperature variation in the South Orkney Islands, maritime Antarctic |
title_full |
Temperature variation in the South Orkney Islands, maritime Antarctic |
title_fullStr |
Temperature variation in the South Orkney Islands, maritime Antarctic |
title_full_unstemmed |
Temperature variation in the South Orkney Islands, maritime Antarctic |
title_sort |
temperature variation in the south orkney islands, maritime antarctic |
publisher |
Wiley/RMetS |
publishDate |
2023 |
url |
http://nora.nerc.ac.uk/id/eprint/535840/ https://nora.nerc.ac.uk/id/eprint/535840/1/Intl%20Journal%20of%20Climatology%20-%202023%20-%20Lu%20-%20Temperature%20variation%20in%20the%20South%20Orkney%20Islands%20%20maritime%20Antarctic.pdf https://rmets.onlinelibrary.wiley.com/doi/full/10.1002/joc.8302 |
long_lat |
ENVELOPE(-45.588,-45.588,-60.595,-60.595) ENVELOPE(-44.717,-44.717,-60.750,-60.750) ENVELOPE(-45.600,-45.600,-60.717,-60.717) ENVELOPE(-45.500,-45.500,-60.583,-60.583) |
geographic |
Antarctic Coronation Island Orcadas Signy Station South Orkney Islands |
geographic_facet |
Antarctic Coronation Island Orcadas Signy Station South Orkney Islands |
genre |
Antarc* Antarctic Coronation Island Sea ice South Orkney Islands |
genre_facet |
Antarc* Antarctic Coronation Island Sea ice South Orkney Islands |
op_relation |
https://nora.nerc.ac.uk/id/eprint/535840/1/Intl%20Journal%20of%20Climatology%20-%202023%20-%20Lu%20-%20Temperature%20variation%20in%20the%20South%20Orkney%20Islands%20%20maritime%20Antarctic.pdf Lu, Hua orcid:0000-0001-9485-5082 Colwell, Steve; King, John orcid:0000-0003-3315-7568 Orr, Andrew orcid:0000-0001-5111-8402 Phillips, Tony orcid:0000-0002-3058-9157 Dobb, Emilia; Xue, Jonathan; Kucieba, Sabina; Phillips, Guy; Marshall, Gareth orcid:0000-0001-8887-7314 . 2023 Temperature variation in the South Orkney Islands, maritime Antarctic. International Journal of Climatology, 43 (16). 7987-8004. https://doi.org/10.1002/joc.8302 <https://doi.org/10.1002/joc.8302> |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.1002/joc.8302 |
container_title |
International Journal of Climatology |
_version_ |
1789327046818660352 |