Modeling ocean-cryosphere interactions off Adelie and George V Land, East Antarctica
Oceancryosphere interactions along the Adlie and George V Land (AGVL) coast are investigated using a coupled oceansea iceice shelf model. The dominant feature of the Mertz Glacier Tongue (MGT), located at approximately 145E, was a highly productive winter coastal polynya system, until its calving in...
Published in: | Journal of Climate |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Amer Meteorological Soc
2017
|
Subjects: | |
Online Access: | https://doi.org/10.1175/JCLI-D-15-0808.1 http://ecite.utas.edu.au/113755 |
id |
ftunivtasecite:oai:ecite.utas.edu.au:113755 |
---|---|
record_format |
openpolar |
spelling |
ftunivtasecite:oai:ecite.utas.edu.au:113755 2023-05-15T13:24:07+02:00 Modeling ocean-cryosphere interactions off Adelie and George V Land, East Antarctica Kusahara, K Hasumi, H Fraser, AD Aoki, S Shimada, K Williams, GD Massom, R Tamura, T 2017 application/pdf https://doi.org/10.1175/JCLI-D-15-0808.1 http://ecite.utas.edu.au/113755 en eng Amer Meteorological Soc http://ecite.utas.edu.au/113755/1/Kusahara_JC_2017.pdf http://dx.doi.org/10.1175/JCLI-D-15-0808.1 Kusahara, K and Hasumi, H and Fraser, AD and Aoki, S and Shimada, K and Williams, GD and Massom, R and Tamura, T, Modeling ocean-cryosphere interactions off Adelie and George V Land, East Antarctica, Journal of Climate, 30 pp. 163-188. ISSN 0894-8755 (2017) [Refereed Article] http://ecite.utas.edu.au/113755 Earth Sciences Climate change science Climate change processes Refereed Article PeerReviewed 2017 ftunivtasecite https://doi.org/10.1175/JCLI-D-15-0808.1 2022-08-30T09:11:43Z Oceancryosphere interactions along the Adlie and George V Land (AGVL) coast are investigated using a coupled oceansea iceice shelf model. The dominant feature of the Mertz Glacier Tongue (MGT), located at approximately 145E, was a highly productive winter coastal polynya system, until its calving in February 2010 dramatically changed the regional icescape. This study examines the annual mean, seasonal, and interannual variabilities of sea ice production; basal melting of the MGT; ice shelves, large icebergs, and fast ice; Dense Shelf Water (DSW) export; and bottom water properties on the continental slope and rise, and assesses the impacts of the calving event. The interannual variability of the winter coastal polynya regime is dominated by the regional offshore winds and air temperature, which are linked to activity of the Amundsen Sea low pressure system. This is the main driver of the interannual variability of DSW exported from the AGVL region. The calving event led to a decrease in sea ice production that resulted in a decrease in the density of DSW export. Subsequently, there is extensive freshening downstream over the continental shelf and slope regions. In addition, it is found that the calving event causes a significant decrease in the mean melt rate of the MGT, resulting from a decrease in ocean heat flux into the cavity due to ocean circulation changes. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctica Antarctica Journal East Antarctica George V Land Ice Shelves Mertz Glacier Sea ice eCite UTAS (University of Tasmania) Amundsen Sea East Antarctica George V Land ENVELOPE(148.000,148.000,-68.500,-68.500) Mertz Glacier ENVELOPE(144.500,144.500,-67.667,-67.667) Mertz Glacier Tongue ENVELOPE(145.500,145.500,-67.167,-67.167) Journal of Climate 30 1 163 188 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Climate change science Climate change processes |
spellingShingle |
Earth Sciences Climate change science Climate change processes Kusahara, K Hasumi, H Fraser, AD Aoki, S Shimada, K Williams, GD Massom, R Tamura, T Modeling ocean-cryosphere interactions off Adelie and George V Land, East Antarctica |
topic_facet |
Earth Sciences Climate change science Climate change processes |
description |
Oceancryosphere interactions along the Adlie and George V Land (AGVL) coast are investigated using a coupled oceansea iceice shelf model. The dominant feature of the Mertz Glacier Tongue (MGT), located at approximately 145E, was a highly productive winter coastal polynya system, until its calving in February 2010 dramatically changed the regional icescape. This study examines the annual mean, seasonal, and interannual variabilities of sea ice production; basal melting of the MGT; ice shelves, large icebergs, and fast ice; Dense Shelf Water (DSW) export; and bottom water properties on the continental slope and rise, and assesses the impacts of the calving event. The interannual variability of the winter coastal polynya regime is dominated by the regional offshore winds and air temperature, which are linked to activity of the Amundsen Sea low pressure system. This is the main driver of the interannual variability of DSW exported from the AGVL region. The calving event led to a decrease in sea ice production that resulted in a decrease in the density of DSW export. Subsequently, there is extensive freshening downstream over the continental shelf and slope regions. In addition, it is found that the calving event causes a significant decrease in the mean melt rate of the MGT, resulting from a decrease in ocean heat flux into the cavity due to ocean circulation changes. |
format |
Article in Journal/Newspaper |
author |
Kusahara, K Hasumi, H Fraser, AD Aoki, S Shimada, K Williams, GD Massom, R Tamura, T |
author_facet |
Kusahara, K Hasumi, H Fraser, AD Aoki, S Shimada, K Williams, GD Massom, R Tamura, T |
author_sort |
Kusahara, K |
title |
Modeling ocean-cryosphere interactions off Adelie and George V Land, East Antarctica |
title_short |
Modeling ocean-cryosphere interactions off Adelie and George V Land, East Antarctica |
title_full |
Modeling ocean-cryosphere interactions off Adelie and George V Land, East Antarctica |
title_fullStr |
Modeling ocean-cryosphere interactions off Adelie and George V Land, East Antarctica |
title_full_unstemmed |
Modeling ocean-cryosphere interactions off Adelie and George V Land, East Antarctica |
title_sort |
modeling ocean-cryosphere interactions off adelie and george v land, east antarctica |
publisher |
Amer Meteorological Soc |
publishDate |
2017 |
url |
https://doi.org/10.1175/JCLI-D-15-0808.1 http://ecite.utas.edu.au/113755 |
long_lat |
ENVELOPE(148.000,148.000,-68.500,-68.500) ENVELOPE(144.500,144.500,-67.667,-67.667) ENVELOPE(145.500,145.500,-67.167,-67.167) |
geographic |
Amundsen Sea East Antarctica George V Land Mertz Glacier Mertz Glacier Tongue |
geographic_facet |
Amundsen Sea East Antarctica George V Land Mertz Glacier Mertz Glacier Tongue |
genre |
Amundsen Sea Antarc* Antarctica Antarctica Journal East Antarctica George V Land Ice Shelves Mertz Glacier Sea ice |
genre_facet |
Amundsen Sea Antarc* Antarctica Antarctica Journal East Antarctica George V Land Ice Shelves Mertz Glacier Sea ice |
op_relation |
http://ecite.utas.edu.au/113755/1/Kusahara_JC_2017.pdf http://dx.doi.org/10.1175/JCLI-D-15-0808.1 Kusahara, K and Hasumi, H and Fraser, AD and Aoki, S and Shimada, K and Williams, GD and Massom, R and Tamura, T, Modeling ocean-cryosphere interactions off Adelie and George V Land, East Antarctica, Journal of Climate, 30 pp. 163-188. ISSN 0894-8755 (2017) [Refereed Article] http://ecite.utas.edu.au/113755 |
op_doi |
https://doi.org/10.1175/JCLI-D-15-0808.1 |
container_title |
Journal of Climate |
container_volume |
30 |
container_issue |
1 |
container_start_page |
163 |
op_container_end_page |
188 |
_version_ |
1766377512741371904 |