Large-scale and regional climatic influences on surface temperature and precipitation in the South Shetland Islands, northern Antarctic Peninsula
Abstract Using data from SCAR observations, ERA5 reanalysis, and regional climate model simulations (RACMO), we examined the influence of large- and regional-scale climate forcing on temperature and precipitation variations in the South Shetland Islands (SSI). Specifically, we focused on understandi...
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ftdoajarticles:oai:doaj.org/article:776bae8de1034b1ba99704410e18ee8f 2024-01-21T09:58:58+01:00 Large-scale and regional climatic influences on surface temperature and precipitation in the South Shetland Islands, northern Antarctic Peninsula CHRISTIAN TORRES DENIZ BOZKURT JORGE ARIGONY-NETO 2023-12-01T00:00:00Z https://doi.org/10.1590/0001-3765202320230685 https://doaj.org/article/776bae8de1034b1ba99704410e18ee8f EN eng Academia Brasileira de Ciências http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652023000601117&lng=en&tlng=en http://www.scielo.br/pdf/aabc/v95s3/0001-3765-aabc-95-s3-e20230685.pdf https://doaj.org/toc/1678-2690 1678-2690 doi:10.1590/0001-3765202320230685 https://doaj.org/article/776bae8de1034b1ba99704410e18ee8f Anais da Academia Brasileira de Ciências, Vol 95, Iss suppl 3 (2023) Temperature Precipitation Drake Passage South Shetland Islands Science Q article 2023 ftdoajarticles https://doi.org/10.1590/0001-3765202320230685 2023-12-24T01:45:06Z Abstract Using data from SCAR observations, ERA5 reanalysis, and regional climate model simulations (RACMO), we examined the influence of large- and regional-scale climate forcing on temperature and precipitation variations in the South Shetland Islands (SSI). Specifically, we focused on understanding how regional climate indices influence the temporal variability of temperature and precipitation on the SSI. Our findings indicate that both large- and regional-scale climate indices significantly impact the interannual and seasonal temperature variability in the SSI. For instance, the Amundsen Sea Low, characterised by low-pressure systems over the Amundsen Sea, and sea ice extent in the northwestern part of the Weddell Sea, exert a strong influence on temperature variability (r from -0.64 to -0.87; p < 0.05). In contrast, precipitation variability in this region is primarily controlled by regional climatic indices. Particularly, anomalies in atmospheric and surface pressure over the Drake Passage region strongly regulate the interannual variability of precipitation in the SSI (r from -0.46 to -0.70; p < 0.05). Large-scale climatic indices demonstrate low but statistically significant correlations, including the Southern Annular Mode and deep convection in the central tropical Pacific. Given the importance of temperature and precipitation in the glacier changes, we recommend assessing the impact of the Drake region on SSI glaciers. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctic Antarctic Peninsula Drake Passage Sea ice South Shetland Islands Weddell Sea Directory of Open Access Journals: DOAJ Articles Amundsen Sea Antarctic Antarctic Peninsula Drake Passage Pacific South Shetland Islands Weddell Weddell Sea Anais da Academia Brasileira de Ciências 95 suppl 3 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Temperature Precipitation Drake Passage South Shetland Islands Science Q |
spellingShingle |
Temperature Precipitation Drake Passage South Shetland Islands Science Q CHRISTIAN TORRES DENIZ BOZKURT JORGE ARIGONY-NETO Large-scale and regional climatic influences on surface temperature and precipitation in the South Shetland Islands, northern Antarctic Peninsula |
topic_facet |
Temperature Precipitation Drake Passage South Shetland Islands Science Q |
description |
Abstract Using data from SCAR observations, ERA5 reanalysis, and regional climate model simulations (RACMO), we examined the influence of large- and regional-scale climate forcing on temperature and precipitation variations in the South Shetland Islands (SSI). Specifically, we focused on understanding how regional climate indices influence the temporal variability of temperature and precipitation on the SSI. Our findings indicate that both large- and regional-scale climate indices significantly impact the interannual and seasonal temperature variability in the SSI. For instance, the Amundsen Sea Low, characterised by low-pressure systems over the Amundsen Sea, and sea ice extent in the northwestern part of the Weddell Sea, exert a strong influence on temperature variability (r from -0.64 to -0.87; p < 0.05). In contrast, precipitation variability in this region is primarily controlled by regional climatic indices. Particularly, anomalies in atmospheric and surface pressure over the Drake Passage region strongly regulate the interannual variability of precipitation in the SSI (r from -0.46 to -0.70; p < 0.05). Large-scale climatic indices demonstrate low but statistically significant correlations, including the Southern Annular Mode and deep convection in the central tropical Pacific. Given the importance of temperature and precipitation in the glacier changes, we recommend assessing the impact of the Drake region on SSI glaciers. |
format |
Article in Journal/Newspaper |
author |
CHRISTIAN TORRES DENIZ BOZKURT JORGE ARIGONY-NETO |
author_facet |
CHRISTIAN TORRES DENIZ BOZKURT JORGE ARIGONY-NETO |
author_sort |
CHRISTIAN TORRES |
title |
Large-scale and regional climatic influences on surface temperature and precipitation in the South Shetland Islands, northern Antarctic Peninsula |
title_short |
Large-scale and regional climatic influences on surface temperature and precipitation in the South Shetland Islands, northern Antarctic Peninsula |
title_full |
Large-scale and regional climatic influences on surface temperature and precipitation in the South Shetland Islands, northern Antarctic Peninsula |
title_fullStr |
Large-scale and regional climatic influences on surface temperature and precipitation in the South Shetland Islands, northern Antarctic Peninsula |
title_full_unstemmed |
Large-scale and regional climatic influences on surface temperature and precipitation in the South Shetland Islands, northern Antarctic Peninsula |
title_sort |
large-scale and regional climatic influences on surface temperature and precipitation in the south shetland islands, northern antarctic peninsula |
publisher |
Academia Brasileira de Ciências |
publishDate |
2023 |
url |
https://doi.org/10.1590/0001-3765202320230685 https://doaj.org/article/776bae8de1034b1ba99704410e18ee8f |
geographic |
Amundsen Sea Antarctic Antarctic Peninsula Drake Passage Pacific South Shetland Islands Weddell Weddell Sea |
geographic_facet |
Amundsen Sea Antarctic Antarctic Peninsula Drake Passage Pacific South Shetland Islands Weddell Weddell Sea |
genre |
Amundsen Sea Antarc* Antarctic Antarctic Peninsula Drake Passage Sea ice South Shetland Islands Weddell Sea |
genre_facet |
Amundsen Sea Antarc* Antarctic Antarctic Peninsula Drake Passage Sea ice South Shetland Islands Weddell Sea |
op_source |
Anais da Academia Brasileira de Ciências, Vol 95, Iss suppl 3 (2023) |
op_relation |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652023000601117&lng=en&tlng=en http://www.scielo.br/pdf/aabc/v95s3/0001-3765-aabc-95-s3-e20230685.pdf https://doaj.org/toc/1678-2690 1678-2690 doi:10.1590/0001-3765202320230685 https://doaj.org/article/776bae8de1034b1ba99704410e18ee8f |
op_doi |
https://doi.org/10.1590/0001-3765202320230685 |
container_title |
Anais da Academia Brasileira de Ciências |
container_volume |
95 |
container_issue |
suppl 3 |
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1788692268994002944 |