Identification of Air Masses Responsible for Warm Events on the East Antarctic Coast
International audience Warm events, periods when rising surface air temperatures can trigger surface melt, have been recorded during the austral summer at Syowa station on the East Antarctic coast. This study identifies air masses responsible for summer warm events at Syowa. Air masses arriving at S...
Published in: | SOLA |
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Main Authors: | , , , , , , |
Other Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2016
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Online Access: | https://hal.archives-ouvertes.fr/hal-03105275 https://hal.archives-ouvertes.fr/hal-03105275/document https://hal.archives-ouvertes.fr/hal-03105275/file/12_2016-060.pdf https://doi.org/10.2151/SOLA.2016-060 |
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ftunivnantes:oai:HAL:hal-03105275v1 |
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openpolar |
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Open Polar |
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Université de Nantes: HAL-UNIV-NANTES |
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ftunivnantes |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Kurita, Naoyuki Hirasawa, Naohiko Koga, Seizi Matsushita, Junji Steen-Larsen, Hans Christian Masson-Delmotte, Valérie Fujiyoshi, Yasushi Identification of Air Masses Responsible for Warm Events on the East Antarctic Coast |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience Warm events, periods when rising surface air temperatures can trigger surface melt, have been recorded during the austral summer at Syowa station on the East Antarctic coast. This study identifies air masses responsible for summer warm events at Syowa. Air masses arriving at Syowa are classified into marine and glacial sources based on their isotopic characteristics. Warm events are not associated with moist marine air intrusion, but with the downward flow of dry glacial air along the west side slope of the mountains in Enderby Land (EL). We use simulations from the Antarctic Mesoscale Prediction System (AMPS) to explore the atmospheric process responsible for the warmest event at Syowa. The model output illustrates several foehn-associated features such as low-level blocking, precipitation on the mountain's windward side, and mountain wave activity, with warm air ascending on the upstream slope and descending to Syowa. The foehn warming is caused by an easterly cross-mountain flow associated with a low-pressure system to the north of the EL coast. Future changes in synoptic cyclonic activity off the EL coast may have a significant impact on the frequency and intensity of foehn events at Syowa and the associated coastal warm events. |
author2 |
Institute for Space-Earth Environmental Research Nagoya (ISEE) Nagoya University National Institute of Polar Research Tokyo (NiPR) National Institute of Advanced Industrial Science and Technology (AIST) Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Institute of Low Temperature Science Sapporo Hokkaido University Sapporo, Japan |
format |
Article in Journal/Newspaper |
author |
Kurita, Naoyuki Hirasawa, Naohiko Koga, Seizi Matsushita, Junji Steen-Larsen, Hans Christian Masson-Delmotte, Valérie Fujiyoshi, Yasushi |
author_facet |
Kurita, Naoyuki Hirasawa, Naohiko Koga, Seizi Matsushita, Junji Steen-Larsen, Hans Christian Masson-Delmotte, Valérie Fujiyoshi, Yasushi |
author_sort |
Kurita, Naoyuki |
title |
Identification of Air Masses Responsible for Warm Events on the East Antarctic Coast |
title_short |
Identification of Air Masses Responsible for Warm Events on the East Antarctic Coast |
title_full |
Identification of Air Masses Responsible for Warm Events on the East Antarctic Coast |
title_fullStr |
Identification of Air Masses Responsible for Warm Events on the East Antarctic Coast |
title_full_unstemmed |
Identification of Air Masses Responsible for Warm Events on the East Antarctic Coast |
title_sort |
identification of air masses responsible for warm events on the east antarctic coast |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.archives-ouvertes.fr/hal-03105275 https://hal.archives-ouvertes.fr/hal-03105275/document https://hal.archives-ouvertes.fr/hal-03105275/file/12_2016-060.pdf https://doi.org/10.2151/SOLA.2016-060 |
geographic |
Antarctic Austral Syowa Station The Antarctic |
geographic_facet |
Antarctic Austral Syowa Station The Antarctic |
genre |
Antarc* Antarctic Enderby Land |
genre_facet |
Antarc* Antarctic Enderby Land |
op_source |
EISSN: 1349-6476 SOLA https://hal.archives-ouvertes.fr/hal-03105275 SOLA, Meteorological Society of Japan, 2016, 12, pp.307-313. ⟨10.2151/SOLA.2016-060⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.2151/SOLA.2016-060 hal-03105275 https://hal.archives-ouvertes.fr/hal-03105275 https://hal.archives-ouvertes.fr/hal-03105275/document https://hal.archives-ouvertes.fr/hal-03105275/file/12_2016-060.pdf doi:10.2151/SOLA.2016-060 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.2151/SOLA.2016-060 |
container_title |
SOLA |
container_volume |
12 |
container_issue |
0 |
container_start_page |
307 |
op_container_end_page |
313 |
_version_ |
1766264141157236736 |
spelling |
ftunivnantes:oai:HAL:hal-03105275v1 2023-05-15T13:56:36+02:00 Identification of Air Masses Responsible for Warm Events on the East Antarctic Coast Kurita, Naoyuki Hirasawa, Naohiko Koga, Seizi Matsushita, Junji Steen-Larsen, Hans Christian Masson-Delmotte, Valérie Fujiyoshi, Yasushi Institute for Space-Earth Environmental Research Nagoya (ISEE) Nagoya University National Institute of Polar Research Tokyo (NiPR) National Institute of Advanced Industrial Science and Technology (AIST) Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Institute of Low Temperature Science Sapporo Hokkaido University Sapporo, Japan 2016 https://hal.archives-ouvertes.fr/hal-03105275 https://hal.archives-ouvertes.fr/hal-03105275/document https://hal.archives-ouvertes.fr/hal-03105275/file/12_2016-060.pdf https://doi.org/10.2151/SOLA.2016-060 en eng HAL CCSD Meteorological Society of Japan info:eu-repo/semantics/altIdentifier/doi/10.2151/SOLA.2016-060 hal-03105275 https://hal.archives-ouvertes.fr/hal-03105275 https://hal.archives-ouvertes.fr/hal-03105275/document https://hal.archives-ouvertes.fr/hal-03105275/file/12_2016-060.pdf doi:10.2151/SOLA.2016-060 info:eu-repo/semantics/OpenAccess EISSN: 1349-6476 SOLA https://hal.archives-ouvertes.fr/hal-03105275 SOLA, Meteorological Society of Japan, 2016, 12, pp.307-313. ⟨10.2151/SOLA.2016-060⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2016 ftunivnantes https://doi.org/10.2151/SOLA.2016-060 2022-10-18T23:35:36Z International audience Warm events, periods when rising surface air temperatures can trigger surface melt, have been recorded during the austral summer at Syowa station on the East Antarctic coast. This study identifies air masses responsible for summer warm events at Syowa. Air masses arriving at Syowa are classified into marine and glacial sources based on their isotopic characteristics. Warm events are not associated with moist marine air intrusion, but with the downward flow of dry glacial air along the west side slope of the mountains in Enderby Land (EL). We use simulations from the Antarctic Mesoscale Prediction System (AMPS) to explore the atmospheric process responsible for the warmest event at Syowa. The model output illustrates several foehn-associated features such as low-level blocking, precipitation on the mountain's windward side, and mountain wave activity, with warm air ascending on the upstream slope and descending to Syowa. The foehn warming is caused by an easterly cross-mountain flow associated with a low-pressure system to the north of the EL coast. Future changes in synoptic cyclonic activity off the EL coast may have a significant impact on the frequency and intensity of foehn events at Syowa and the associated coastal warm events. Article in Journal/Newspaper Antarc* Antarctic Enderby Land Université de Nantes: HAL-UNIV-NANTES Antarctic Austral Syowa Station The Antarctic SOLA 12 0 307 313 |