An extreme high temperature event in coastal East Antarctica associated with an atmospheric river and record summer downslope winds
High surface temperatures are important in Antarctica because of their role in ice melt and sea level rise. We investigate a high temperature event in December 1989 that gave record temperatures in coastal East Antarctica between 60º and 100º E. The high temperatures were associated with a pool of w...
Published in: | Geophysical Research Letters |
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American Geophysical Union
2022
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Online Access: | http://nora.nerc.ac.uk/id/eprint/531893/ https://nora.nerc.ac.uk/id/eprint/531893/1/Geophysical%20Research%20Letters%20-%202022%20-%20Turner%20-%20An%20Extreme%20High%20Temperature%20Event%20in%20Coastal%20East%20Antarctica%20Associated%20With.pdf https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021GL097108 |
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ftnerc:oai:nora.nerc.ac.uk:531893 2023-05-15T13:22:06+02:00 An extreme high temperature event in coastal East Antarctica associated with an atmospheric river and record summer downslope winds Turner, John Lu, Hua King, John C. Carpentier, Scott Lazzara, Matthew Phillips, Tony Wille, Jonathan 2022-02-28 text http://nora.nerc.ac.uk/id/eprint/531893/ https://nora.nerc.ac.uk/id/eprint/531893/1/Geophysical%20Research%20Letters%20-%202022%20-%20Turner%20-%20An%20Extreme%20High%20Temperature%20Event%20in%20Coastal%20East%20Antarctica%20Associated%20With.pdf https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021GL097108 en eng American Geophysical Union https://nora.nerc.ac.uk/id/eprint/531893/1/Geophysical%20Research%20Letters%20-%202022%20-%20Turner%20-%20An%20Extreme%20High%20Temperature%20Event%20in%20Coastal%20East%20Antarctica%20Associated%20With.pdf Turner, John orcid:0000-0002-6111-5122 Lu, Hua orcid:0000-0001-9485-5082 King, John C. orcid:0000-0003-3315-7568 Carpentier, Scott; Lazzara, Matthew; Phillips, Tony orcid:0000-0002-3058-9157 Wille, Jonathan. 2022 An extreme high temperature event in coastal East Antarctica associated with an atmospheric river and record summer downslope winds. Geophysical Research Letters, 49 (4), e2021GL097108. 11, pp. https://doi.org/10.1029/2021GL097108 <https://doi.org/10.1029/2021GL097108> cc_by_4 CC-BY Publication - Article PeerReviewed 2022 ftnerc https://doi.org/10.1029/2021GL097108 2023-02-04T19:52:59Z High surface temperatures are important in Antarctica because of their role in ice melt and sea level rise. We investigate a high temperature event in December 1989 that gave record temperatures in coastal East Antarctica between 60º and 100º E. The high temperatures were associated with a pool of warm lower tropospheric air with December temperature anomalies of >14º C that developed in two stages over the Amery Ice Shelf. Firstly, there was near-record poleward warm advection within an atmospheric river. Secondly, synoptically-driven downslope flow from the interior reached unprecedented December strength over a large area, leading to strong descent and further warming in the coastal region. The coastal easterly winds were unusually deep and strong, and the warm pool was advected westwards, giving a short period of high temperatures at coastal locations, including a surface temperature of 9.3ºC at Mawson, the second highest in its 66-year record. Article in Journal/Newspaper Amery Ice Shelf Antarc* Antarctica East Antarctica Ice Shelf Natural Environment Research Council: NERC Open Research Archive East Antarctica Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Amery Ice Shelf ENVELOPE(71.000,71.000,-69.750,-69.750) Geophysical Research Letters 49 4 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
High surface temperatures are important in Antarctica because of their role in ice melt and sea level rise. We investigate a high temperature event in December 1989 that gave record temperatures in coastal East Antarctica between 60º and 100º E. The high temperatures were associated with a pool of warm lower tropospheric air with December temperature anomalies of >14º C that developed in two stages over the Amery Ice Shelf. Firstly, there was near-record poleward warm advection within an atmospheric river. Secondly, synoptically-driven downslope flow from the interior reached unprecedented December strength over a large area, leading to strong descent and further warming in the coastal region. The coastal easterly winds were unusually deep and strong, and the warm pool was advected westwards, giving a short period of high temperatures at coastal locations, including a surface temperature of 9.3ºC at Mawson, the second highest in its 66-year record. |
format |
Article in Journal/Newspaper |
author |
Turner, John Lu, Hua King, John C. Carpentier, Scott Lazzara, Matthew Phillips, Tony Wille, Jonathan |
spellingShingle |
Turner, John Lu, Hua King, John C. Carpentier, Scott Lazzara, Matthew Phillips, Tony Wille, Jonathan An extreme high temperature event in coastal East Antarctica associated with an atmospheric river and record summer downslope winds |
author_facet |
Turner, John Lu, Hua King, John C. Carpentier, Scott Lazzara, Matthew Phillips, Tony Wille, Jonathan |
author_sort |
Turner, John |
title |
An extreme high temperature event in coastal East Antarctica associated with an atmospheric river and record summer downslope winds |
title_short |
An extreme high temperature event in coastal East Antarctica associated with an atmospheric river and record summer downslope winds |
title_full |
An extreme high temperature event in coastal East Antarctica associated with an atmospheric river and record summer downslope winds |
title_fullStr |
An extreme high temperature event in coastal East Antarctica associated with an atmospheric river and record summer downslope winds |
title_full_unstemmed |
An extreme high temperature event in coastal East Antarctica associated with an atmospheric river and record summer downslope winds |
title_sort |
extreme high temperature event in coastal east antarctica associated with an atmospheric river and record summer downslope winds |
publisher |
American Geophysical Union |
publishDate |
2022 |
url |
http://nora.nerc.ac.uk/id/eprint/531893/ https://nora.nerc.ac.uk/id/eprint/531893/1/Geophysical%20Research%20Letters%20-%202022%20-%20Turner%20-%20An%20Extreme%20High%20Temperature%20Event%20in%20Coastal%20East%20Antarctica%20Associated%20With.pdf https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021GL097108 |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(71.000,71.000,-69.750,-69.750) |
geographic |
East Antarctica Amery Amery Ice Shelf |
geographic_facet |
East Antarctica Amery Amery Ice Shelf |
genre |
Amery Ice Shelf Antarc* Antarctica East Antarctica Ice Shelf |
genre_facet |
Amery Ice Shelf Antarc* Antarctica East Antarctica Ice Shelf |
op_relation |
https://nora.nerc.ac.uk/id/eprint/531893/1/Geophysical%20Research%20Letters%20-%202022%20-%20Turner%20-%20An%20Extreme%20High%20Temperature%20Event%20in%20Coastal%20East%20Antarctica%20Associated%20With.pdf Turner, John orcid:0000-0002-6111-5122 Lu, Hua orcid:0000-0001-9485-5082 King, John C. orcid:0000-0003-3315-7568 Carpentier, Scott; Lazzara, Matthew; Phillips, Tony orcid:0000-0002-3058-9157 Wille, Jonathan. 2022 An extreme high temperature event in coastal East Antarctica associated with an atmospheric river and record summer downslope winds. Geophysical Research Letters, 49 (4), e2021GL097108. 11, pp. https://doi.org/10.1029/2021GL097108 <https://doi.org/10.1029/2021GL097108> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1029/2021GL097108 |
container_title |
Geophysical Research Letters |
container_volume |
49 |
container_issue |
4 |
_version_ |
1766363297880211456 |