Near-Real Time Detection of the Re-Opening of the Weddell Polynya, Antarctica, from Spaceborne Infrared Imagery
A hole in the Antarctic sea ice cover, the Weddell Polynya, unexpectedly re-opened in winter 2017 for the first time since 1976. Models suggest that the polynya opened because warm oceanic water moved up to the surface, melting the ice from below. Here three temperature thresholds applied to near-ho...
Published in: | IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium |
---|---|
Main Authors: | , |
Language: | unknown |
Published: |
2018
|
Subjects: | |
Online Access: | https://doi.org/10.1109/IGARSS.2018.8518219 https://research.chalmers.se/en/publication/73f3bb43-520c-4d9e-969e-294a1633490c |
id |
ftchalmersuniv:oai:research.chalmers.se:509360 |
---|---|
record_format |
openpolar |
spelling |
ftchalmersuniv:oai:research.chalmers.se:509360 2023-05-15T14:02:43+02:00 Near-Real Time Detection of the Re-Opening of the Weddell Polynya, Antarctica, from Spaceborne Infrared Imagery Heuze, Celine Aldenhoff, Wiebke 2018 text https://doi.org/10.1109/IGARSS.2018.8518219 https://research.chalmers.se/en/publication/73f3bb43-520c-4d9e-969e-294a1633490c unknown http://dx.doi.org/10.1109/IGARSS.2018.8518219 https://research.chalmers.se/en/publication/73f3bb43-520c-4d9e-969e-294a1633490c Meteorology and Atmospheric Sciences Oceanography Hydrology Water Resources Climate Research 2018 ftchalmersuniv https://doi.org/10.1109/IGARSS.2018.8518219 2023-03-22T23:34:32Z A hole in the Antarctic sea ice cover, the Weddell Polynya, unexpectedly re-opened in winter 2017 for the first time since 1976. Models suggest that the polynya opened because warm oceanic water moved up to the surface, melting the ice from below. Here three temperature thresholds applied to near-hourly spaceborne infrared imagery (AVHRR) successfully detect the appearance of a warm spot up to five days before the polynya opened in June and September 2017. Traditional sea ice concentration and thickness criteria could only detect the polynya once it was open. An automatised warning system, using near-real time passive monitoring of warm spots, would allow researchers to reroute vessels or autonomous sensors in order to finally study the polynya as a whole when it opens again, from its preconditioning to its impacts on the climate system. Other/Unknown Material Antarc* Antarctic Antarctica Sea ice Chalmers University of Technology: Chalmers research Antarctic The Antarctic Weddell IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium 5613 5616 |
institution |
Open Polar |
collection |
Chalmers University of Technology: Chalmers research |
op_collection_id |
ftchalmersuniv |
language |
unknown |
topic |
Meteorology and Atmospheric Sciences Oceanography Hydrology Water Resources Climate Research |
spellingShingle |
Meteorology and Atmospheric Sciences Oceanography Hydrology Water Resources Climate Research Heuze, Celine Aldenhoff, Wiebke Near-Real Time Detection of the Re-Opening of the Weddell Polynya, Antarctica, from Spaceborne Infrared Imagery |
topic_facet |
Meteorology and Atmospheric Sciences Oceanography Hydrology Water Resources Climate Research |
description |
A hole in the Antarctic sea ice cover, the Weddell Polynya, unexpectedly re-opened in winter 2017 for the first time since 1976. Models suggest that the polynya opened because warm oceanic water moved up to the surface, melting the ice from below. Here three temperature thresholds applied to near-hourly spaceborne infrared imagery (AVHRR) successfully detect the appearance of a warm spot up to five days before the polynya opened in June and September 2017. Traditional sea ice concentration and thickness criteria could only detect the polynya once it was open. An automatised warning system, using near-real time passive monitoring of warm spots, would allow researchers to reroute vessels or autonomous sensors in order to finally study the polynya as a whole when it opens again, from its preconditioning to its impacts on the climate system. |
author |
Heuze, Celine Aldenhoff, Wiebke |
author_facet |
Heuze, Celine Aldenhoff, Wiebke |
author_sort |
Heuze, Celine |
title |
Near-Real Time Detection of the Re-Opening of the Weddell Polynya, Antarctica, from Spaceborne Infrared Imagery |
title_short |
Near-Real Time Detection of the Re-Opening of the Weddell Polynya, Antarctica, from Spaceborne Infrared Imagery |
title_full |
Near-Real Time Detection of the Re-Opening of the Weddell Polynya, Antarctica, from Spaceborne Infrared Imagery |
title_fullStr |
Near-Real Time Detection of the Re-Opening of the Weddell Polynya, Antarctica, from Spaceborne Infrared Imagery |
title_full_unstemmed |
Near-Real Time Detection of the Re-Opening of the Weddell Polynya, Antarctica, from Spaceborne Infrared Imagery |
title_sort |
near-real time detection of the re-opening of the weddell polynya, antarctica, from spaceborne infrared imagery |
publishDate |
2018 |
url |
https://doi.org/10.1109/IGARSS.2018.8518219 https://research.chalmers.se/en/publication/73f3bb43-520c-4d9e-969e-294a1633490c |
geographic |
Antarctic The Antarctic Weddell |
geographic_facet |
Antarctic The Antarctic Weddell |
genre |
Antarc* Antarctic Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Sea ice |
op_relation |
http://dx.doi.org/10.1109/IGARSS.2018.8518219 https://research.chalmers.se/en/publication/73f3bb43-520c-4d9e-969e-294a1633490c |
op_doi |
https://doi.org/10.1109/IGARSS.2018.8518219 |
container_title |
IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium |
container_start_page |
5613 |
op_container_end_page |
5616 |
_version_ |
1766273137172807680 |