Southward migration of the zero-degree isotherm latitude over the Southern Ocean and the Antarctic Peninsula: Cryospheric, biotic and societal implications
The seasonal movement of the zero-degree isotherm across the Southern Ocean and Antarctic Peninsula drives major changes in the physical and biological processes around maritime Antarctica. These include spatial and temporal shifts in precipitation phase, snow accumulation and melt, thawing and free...
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ftaemet:oai:repositorio.aemet.es:20.500.11765/15471 2024-06-23T07:47:55+00:00 Southward migration of the zero-degree isotherm latitude over the Southern Ocean and the Antarctic Peninsula: Cryospheric, biotic and societal implications González Herrero, Sergi Navarro, Francisco J. Pertierra, Luis R. Oliva, Marc Dadic, Ruzica Peck, Lloyd Lehning, Michael 2024 https://hdl.handle.net/20.500.11765/15471 eng eng Elsevier https://doi.org/10.1016/j.scitotenv.2023.168473 Science of the Total Environment. 2024, 912, 168473 0048-9697 1879-1026 http://hdl.handle.net/20.500.11765/15471 Licencia CC: Reconocimiento CC BY info:eu-repo/semantics/openAccess Zero-degree isotherm Climate change Southern Ocean Cryosphere Antarctic Peninsula Biodiversity info:eu-repo/semantics/article 2024 ftaemet https://doi.org/20.500.11765/1547110.1016/j.scitotenv.2023.168473 2024-06-03T14:17:57Z The seasonal movement of the zero-degree isotherm across the Southern Ocean and Antarctic Peninsula drives major changes in the physical and biological processes around maritime Antarctica. These include spatial and temporal shifts in precipitation phase, snow accumulation and melt, thawing and freezing of the active layer of the permafrost, glacier mass balance variations, sea ice mass balance and changes in physiological processes of biodiversity. Here, we characterize the historical seasonal southward movement of the monthly near-surface zero-degree isotherm latitude (ZIL), and quantify the velocity of migration in the context of climate change using climate reanalyses and projections. From 1957 to 2020, the ZIL exhibited a significant southward shift of 16.8 km decade−1 around Antarctica and of 23.8 km decade−1 in the Antarctic Peninsula, substantially faster than the global mean velocity of temperature change of 4.2 km decade−1, with only a small fraction being attributed to the Southern Annular Mode (SAM). CMIP6 models reproduce the trends observed from 1957 to 2014 and predict a further southward migration around Antarctica of 24 ± 12 km decade−1 and 50 ± 19 km decade−1 under the SSP2-4.5 and SSP5-8.5 scenarios, respectively. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Ice permafrost Sea ice Southern Ocean ARCIMÍS (Archivo Climatológico y Meteorológico Institucional - AEMET, Agencia Estatal de Meteorología) Antarctic Southern Ocean The Antarctic Antarctic Peninsula Science of The Total Environment 912 168473 |
institution |
Open Polar |
collection |
ARCIMÍS (Archivo Climatológico y Meteorológico Institucional - AEMET, Agencia Estatal de Meteorología) |
op_collection_id |
ftaemet |
language |
English |
topic |
Zero-degree isotherm Climate change Southern Ocean Cryosphere Antarctic Peninsula Biodiversity |
spellingShingle |
Zero-degree isotherm Climate change Southern Ocean Cryosphere Antarctic Peninsula Biodiversity González Herrero, Sergi Navarro, Francisco J. Pertierra, Luis R. Oliva, Marc Dadic, Ruzica Peck, Lloyd Lehning, Michael Southward migration of the zero-degree isotherm latitude over the Southern Ocean and the Antarctic Peninsula: Cryospheric, biotic and societal implications |
topic_facet |
Zero-degree isotherm Climate change Southern Ocean Cryosphere Antarctic Peninsula Biodiversity |
description |
The seasonal movement of the zero-degree isotherm across the Southern Ocean and Antarctic Peninsula drives major changes in the physical and biological processes around maritime Antarctica. These include spatial and temporal shifts in precipitation phase, snow accumulation and melt, thawing and freezing of the active layer of the permafrost, glacier mass balance variations, sea ice mass balance and changes in physiological processes of biodiversity. Here, we characterize the historical seasonal southward movement of the monthly near-surface zero-degree isotherm latitude (ZIL), and quantify the velocity of migration in the context of climate change using climate reanalyses and projections. From 1957 to 2020, the ZIL exhibited a significant southward shift of 16.8 km decade−1 around Antarctica and of 23.8 km decade−1 in the Antarctic Peninsula, substantially faster than the global mean velocity of temperature change of 4.2 km decade−1, with only a small fraction being attributed to the Southern Annular Mode (SAM). CMIP6 models reproduce the trends observed from 1957 to 2014 and predict a further southward migration around Antarctica of 24 ± 12 km decade−1 and 50 ± 19 km decade−1 under the SSP2-4.5 and SSP5-8.5 scenarios, respectively. |
format |
Article in Journal/Newspaper |
author |
González Herrero, Sergi Navarro, Francisco J. Pertierra, Luis R. Oliva, Marc Dadic, Ruzica Peck, Lloyd Lehning, Michael |
author_facet |
González Herrero, Sergi Navarro, Francisco J. Pertierra, Luis R. Oliva, Marc Dadic, Ruzica Peck, Lloyd Lehning, Michael |
author_sort |
González Herrero, Sergi |
title |
Southward migration of the zero-degree isotherm latitude over the Southern Ocean and the Antarctic Peninsula: Cryospheric, biotic and societal implications |
title_short |
Southward migration of the zero-degree isotherm latitude over the Southern Ocean and the Antarctic Peninsula: Cryospheric, biotic and societal implications |
title_full |
Southward migration of the zero-degree isotherm latitude over the Southern Ocean and the Antarctic Peninsula: Cryospheric, biotic and societal implications |
title_fullStr |
Southward migration of the zero-degree isotherm latitude over the Southern Ocean and the Antarctic Peninsula: Cryospheric, biotic and societal implications |
title_full_unstemmed |
Southward migration of the zero-degree isotherm latitude over the Southern Ocean and the Antarctic Peninsula: Cryospheric, biotic and societal implications |
title_sort |
southward migration of the zero-degree isotherm latitude over the southern ocean and the antarctic peninsula: cryospheric, biotic and societal implications |
publisher |
Elsevier |
publishDate |
2024 |
url |
https://hdl.handle.net/20.500.11765/15471 |
geographic |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice permafrost Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice permafrost Sea ice Southern Ocean |
op_relation |
https://doi.org/10.1016/j.scitotenv.2023.168473 Science of the Total Environment. 2024, 912, 168473 0048-9697 1879-1026 http://hdl.handle.net/20.500.11765/15471 |
op_rights |
Licencia CC: Reconocimiento CC BY info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/20.500.11765/1547110.1016/j.scitotenv.2023.168473 |
container_title |
Science of The Total Environment |
container_volume |
912 |
container_start_page |
168473 |
_version_ |
1802638158524841984 |