A global high-resolution data set of ice sheet topography, cavity geometry and ocean bathymetry
The ocean plays an important role in modulating the mass balance of the polar ice sheets by interactingwith the ice shelves in Antarctica and with the marine-terminating outlet glaciers in Greenland. Given thatthe flux of warm water onto the continental shelf and into the sub-ice cavities is steered...
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ftdtupubl:oai:pure.atira.dk:publications/58a1e30a-34da-41b4-882b-13b74825647d 2024-06-23T07:45:17+00:00 A global high-resolution data set of ice sheet topography, cavity geometry and ocean bathymetry Schaffer, Janin Timmermann, Ralph Arndt, Jan Erik Kristensen, Steen Savstrup Mayer, Christoph Morlighem, Mathieu Steinhage, Daniel 2016 application/pdf https://orbit.dtu.dk/en/publications/58a1e30a-34da-41b4-882b-13b74825647d https://doi.org/10.5194/essd-2016-3 https://backend.orbit.dtu.dk/ws/files/126828830/essd_8_543_2016.pdf eng eng https://orbit.dtu.dk/en/publications/58a1e30a-34da-41b4-882b-13b74825647d info:eu-repo/semantics/openAccess Schaffer , J , Timmermann , R , Arndt , J E , Kristensen , S S , Mayer , C , Morlighem , M & Steinhage , D 2016 , ' A global high-resolution data set of ice sheet topography, cavity geometry and ocean bathymetry ' , Earth System Science Data , vol. 8 , pp. 543-557 . https://doi.org/10.5194/essd-2016-3 /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2016 ftdtupubl https://doi.org/10.5194/essd-2016-3 2024-06-04T15:14:17Z The ocean plays an important role in modulating the mass balance of the polar ice sheets by interactingwith the ice shelves in Antarctica and with the marine-terminating outlet glaciers in Greenland. Given thatthe flux of warm water onto the continental shelf and into the sub-ice cavities is steered by complex bathymetry, adetailed topography data set is an essential ingredient for models that address ice–ocean interaction.We followed the spirit of the global RTopo-1 data set and compiled consistent maps of global ocean bathymetry, upper andlower ice surface topographies, and global surface height on a spherical grid with now 30 arcsec grid spacing. For this new data set, called RTopo-2, we used the General Bathymetric Chart of the Oceans (GEBCO_2014)as the backbone and added the International Bathymetric Chart of the Arctic Ocean version 3 (IBCAOv3) and the International Bathymetric Chart of the Southern Ocean (IBCSO) version 1. While RTopo-1 primarily aimed at a good and consistent representation of the Antarctic ice sheet, ice shelves, and sub-ice cavities, RTopo-2now also contains ice topographies of the Greenland ice sheet and outlet glaciers. In particular, we aimed at agood representation of the fjord and shelf bathymetry surrounding the Greenland continent. We modified data from earlier gridded products in the areas of Petermann Glacier, Hagen Bræ, and Sermilik Fjord, assumingthat sub-ice and fjord bathymetries roughly follow plausible Last Glacial Maximum ice flow patterns. For the continental shelf off Northeast Greenland and the floating ice tongue of Nioghalvfjerdsfjorden Glacier at about79 N, we incorporated a high-resolution digital bathymetry model considering original multibeam survey datafor the region. Radar data for surface topographies of the floating ice tongues of Nioghalvfjerdsfjorden Glacierand Zachariæ Isstrøm have been obtained from the data centres of Technical University of Denmark (DTU),Operation Icebridge (NASA/NSF), and Alfred Wegener Institute (AWI). For the Antarctic ice ... Article in Journal/Newspaper Alfred Wegener Institute Antarc* Antarctic Antarctica Arctic Arctic Ocean glacier Greenland Ice Sheet Ice Shelves Nioghalvfjerdsfjorden Petermann glacier Sermilik Southern Ocean Technical University of Denmark: DTU Orbit Antarctic Arctic Arctic Ocean Greenland Hagen ENVELOPE(6.545,6.545,62.545,62.545) Nioghalvfjerdsfjorden ENVELOPE(-21.500,-21.500,79.500,79.500) Southern Ocean The Antarctic |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Schaffer, Janin Timmermann, Ralph Arndt, Jan Erik Kristensen, Steen Savstrup Mayer, Christoph Morlighem, Mathieu Steinhage, Daniel A global high-resolution data set of ice sheet topography, cavity geometry and ocean bathymetry |
topic_facet |
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
The ocean plays an important role in modulating the mass balance of the polar ice sheets by interactingwith the ice shelves in Antarctica and with the marine-terminating outlet glaciers in Greenland. Given thatthe flux of warm water onto the continental shelf and into the sub-ice cavities is steered by complex bathymetry, adetailed topography data set is an essential ingredient for models that address ice–ocean interaction.We followed the spirit of the global RTopo-1 data set and compiled consistent maps of global ocean bathymetry, upper andlower ice surface topographies, and global surface height on a spherical grid with now 30 arcsec grid spacing. For this new data set, called RTopo-2, we used the General Bathymetric Chart of the Oceans (GEBCO_2014)as the backbone and added the International Bathymetric Chart of the Arctic Ocean version 3 (IBCAOv3) and the International Bathymetric Chart of the Southern Ocean (IBCSO) version 1. While RTopo-1 primarily aimed at a good and consistent representation of the Antarctic ice sheet, ice shelves, and sub-ice cavities, RTopo-2now also contains ice topographies of the Greenland ice sheet and outlet glaciers. In particular, we aimed at agood representation of the fjord and shelf bathymetry surrounding the Greenland continent. We modified data from earlier gridded products in the areas of Petermann Glacier, Hagen Bræ, and Sermilik Fjord, assumingthat sub-ice and fjord bathymetries roughly follow plausible Last Glacial Maximum ice flow patterns. For the continental shelf off Northeast Greenland and the floating ice tongue of Nioghalvfjerdsfjorden Glacier at about79 N, we incorporated a high-resolution digital bathymetry model considering original multibeam survey datafor the region. Radar data for surface topographies of the floating ice tongues of Nioghalvfjerdsfjorden Glacierand Zachariæ Isstrøm have been obtained from the data centres of Technical University of Denmark (DTU),Operation Icebridge (NASA/NSF), and Alfred Wegener Institute (AWI). For the Antarctic ice ... |
format |
Article in Journal/Newspaper |
author |
Schaffer, Janin Timmermann, Ralph Arndt, Jan Erik Kristensen, Steen Savstrup Mayer, Christoph Morlighem, Mathieu Steinhage, Daniel |
author_facet |
Schaffer, Janin Timmermann, Ralph Arndt, Jan Erik Kristensen, Steen Savstrup Mayer, Christoph Morlighem, Mathieu Steinhage, Daniel |
author_sort |
Schaffer, Janin |
title |
A global high-resolution data set of ice sheet topography, cavity geometry and ocean bathymetry |
title_short |
A global high-resolution data set of ice sheet topography, cavity geometry and ocean bathymetry |
title_full |
A global high-resolution data set of ice sheet topography, cavity geometry and ocean bathymetry |
title_fullStr |
A global high-resolution data set of ice sheet topography, cavity geometry and ocean bathymetry |
title_full_unstemmed |
A global high-resolution data set of ice sheet topography, cavity geometry and ocean bathymetry |
title_sort |
global high-resolution data set of ice sheet topography, cavity geometry and ocean bathymetry |
publishDate |
2016 |
url |
https://orbit.dtu.dk/en/publications/58a1e30a-34da-41b4-882b-13b74825647d https://doi.org/10.5194/essd-2016-3 https://backend.orbit.dtu.dk/ws/files/126828830/essd_8_543_2016.pdf |
long_lat |
ENVELOPE(6.545,6.545,62.545,62.545) ENVELOPE(-21.500,-21.500,79.500,79.500) |
geographic |
Antarctic Arctic Arctic Ocean Greenland Hagen Nioghalvfjerdsfjorden Southern Ocean The Antarctic |
geographic_facet |
Antarctic Arctic Arctic Ocean Greenland Hagen Nioghalvfjerdsfjorden Southern Ocean The Antarctic |
genre |
Alfred Wegener Institute Antarc* Antarctic Antarctica Arctic Arctic Ocean glacier Greenland Ice Sheet Ice Shelves Nioghalvfjerdsfjorden Petermann glacier Sermilik Southern Ocean |
genre_facet |
Alfred Wegener Institute Antarc* Antarctic Antarctica Arctic Arctic Ocean glacier Greenland Ice Sheet Ice Shelves Nioghalvfjerdsfjorden Petermann glacier Sermilik Southern Ocean |
op_source |
Schaffer , J , Timmermann , R , Arndt , J E , Kristensen , S S , Mayer , C , Morlighem , M & Steinhage , D 2016 , ' A global high-resolution data set of ice sheet topography, cavity geometry and ocean bathymetry ' , Earth System Science Data , vol. 8 , pp. 543-557 . https://doi.org/10.5194/essd-2016-3 |
op_relation |
https://orbit.dtu.dk/en/publications/58a1e30a-34da-41b4-882b-13b74825647d |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/essd-2016-3 |
_version_ |
1802638858039328768 |