GRISLI 2.0 sensitivity experiments for the Antarctic ice sheet
Here we present the sensitivity experiments are conducted with the latest GRISLI version 2.0 (Quiquet et al. 2018), to model changes of the Antarctic ice sheet between 100 ka and 400 ka. GRISLI 2.0 is is a large-scale three-dimensional thermomechanical ice sheet model and the newest version of the G...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.942823 2023-05-15T13:40:09+02:00 GRISLI 2.0 sensitivity experiments for the Antarctic ice sheet Crotti, Ilaria Quiquet, Aurélien Landais, Amaelle Stenni, Barbara Wilson, David Severi, Mirko Mulvaney, Rob Wilhelms, Frank Barbante, Carlo Frezzotti, Massimo MEDIAN LATITUDE: -72.330100 * MEDIAN LONGITUDE: 180.000000 * SOUTH-BOUND LATITUDE: -90.000000 * WEST-BOUND LONGITUDE: 180.000000 * NORTH-BOUND LATITUDE: -54.660200 * EAST-BOUND LONGITUDE: 180.000000 2022-03-30 text/tab-separated-values, 2 data points https://doi.pangaea.de/10.1594/PANGAEA.942823 en eng PANGAEA GRISLI 2.0 sensitivity experiments for the Antarctic ice sheet (readme) (URI: https://download.pangaea.de/reference/112437/attachments/readme.txt) https://doi.pangaea.de/10.1594/PANGAEA.942823 Access constraints: access rights needed info:eu-repo/semantics/restrictedAccess Antarctica Binary Object GRISLI_Antarctic_ice_sheet Model modelling Wilkes land Dataset 2022 ftpangaea 2022-05-31T07:13:30Z Here we present the sensitivity experiments are conducted with the latest GRISLI version 2.0 (Quiquet et al. 2018), to model changes of the Antarctic ice sheet between 100 ka and 400 ka. GRISLI 2.0 is is a large-scale three-dimensional thermomechanical ice sheet model and the newest version of the Grenoble Ice Sheet and Land Ice model (Ritz et al. 2001). The model combines an inland ice model with an ice shelf model, extended to the case of ice streams considered as dragging ice shelves. The latest release includes a better representation of grounding line migration and a sub-glacial hydrology model. The model uses finite differences on a Cartesian grid at 5 to 40 km resolution depending on the application. Here we use a 40 km grid. The spatial coverage of the model experiments is latitude: -90/-54.6602 longitude: -180/180. For the selection of the ice sheet model parameters, we used the calibration performed in Quiquet et al. (2018) using the ensemble member labeled AN40T213 in Quiquet et al. (2018). This ensemble member uses the formulation of Tsai et al. (2015) for the imposed flux at the grounding line. The model setup used to perform the transient paleo ice sheet simulations (boundary conditions and forcings) is identical to that used by Quiquet et al. (2018). The model is forced by near-surface air temperatures over Antarctica deduced from the EDC δD record (Jouzel et al. 2007) and by ocean temperatures derived from the ODP 980 benthic temperature record from the North Atlantic Ocean (Waelbroeck et al. 2002). The outputs of the model consist in the Antarctic ice sheet surface elevation changes, bedrock elevation, and ice thickness variations over the past 400 ka with a 1ka temporal resolution. In addition, we calculated the evolution of the ice volume contained in the Wilkes Basin during the past 400 ka. We performed six sensitivity tests in which we changed the initial state of the Antarctic ice sheet (i.e. glacial or interglacial) at 400 ka. In addition, given that the Southern Ocean forcing represents ... Dataset Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ice Shelves North Atlantic Southern Ocean Wilkes Land PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Southern Ocean The Antarctic Wilkes Land ENVELOPE(120.000,120.000,-69.000,-69.000) ENVELOPE(180.000000,180.000000,-54.660200,-90.000000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Antarctica Binary Object GRISLI_Antarctic_ice_sheet Model modelling Wilkes land |
spellingShingle |
Antarctica Binary Object GRISLI_Antarctic_ice_sheet Model modelling Wilkes land Crotti, Ilaria Quiquet, Aurélien Landais, Amaelle Stenni, Barbara Wilson, David Severi, Mirko Mulvaney, Rob Wilhelms, Frank Barbante, Carlo Frezzotti, Massimo GRISLI 2.0 sensitivity experiments for the Antarctic ice sheet |
topic_facet |
Antarctica Binary Object GRISLI_Antarctic_ice_sheet Model modelling Wilkes land |
description |
Here we present the sensitivity experiments are conducted with the latest GRISLI version 2.0 (Quiquet et al. 2018), to model changes of the Antarctic ice sheet between 100 ka and 400 ka. GRISLI 2.0 is is a large-scale three-dimensional thermomechanical ice sheet model and the newest version of the Grenoble Ice Sheet and Land Ice model (Ritz et al. 2001). The model combines an inland ice model with an ice shelf model, extended to the case of ice streams considered as dragging ice shelves. The latest release includes a better representation of grounding line migration and a sub-glacial hydrology model. The model uses finite differences on a Cartesian grid at 5 to 40 km resolution depending on the application. Here we use a 40 km grid. The spatial coverage of the model experiments is latitude: -90/-54.6602 longitude: -180/180. For the selection of the ice sheet model parameters, we used the calibration performed in Quiquet et al. (2018) using the ensemble member labeled AN40T213 in Quiquet et al. (2018). This ensemble member uses the formulation of Tsai et al. (2015) for the imposed flux at the grounding line. The model setup used to perform the transient paleo ice sheet simulations (boundary conditions and forcings) is identical to that used by Quiquet et al. (2018). The model is forced by near-surface air temperatures over Antarctica deduced from the EDC δD record (Jouzel et al. 2007) and by ocean temperatures derived from the ODP 980 benthic temperature record from the North Atlantic Ocean (Waelbroeck et al. 2002). The outputs of the model consist in the Antarctic ice sheet surface elevation changes, bedrock elevation, and ice thickness variations over the past 400 ka with a 1ka temporal resolution. In addition, we calculated the evolution of the ice volume contained in the Wilkes Basin during the past 400 ka. We performed six sensitivity tests in which we changed the initial state of the Antarctic ice sheet (i.e. glacial or interglacial) at 400 ka. In addition, given that the Southern Ocean forcing represents ... |
format |
Dataset |
author |
Crotti, Ilaria Quiquet, Aurélien Landais, Amaelle Stenni, Barbara Wilson, David Severi, Mirko Mulvaney, Rob Wilhelms, Frank Barbante, Carlo Frezzotti, Massimo |
author_facet |
Crotti, Ilaria Quiquet, Aurélien Landais, Amaelle Stenni, Barbara Wilson, David Severi, Mirko Mulvaney, Rob Wilhelms, Frank Barbante, Carlo Frezzotti, Massimo |
author_sort |
Crotti, Ilaria |
title |
GRISLI 2.0 sensitivity experiments for the Antarctic ice sheet |
title_short |
GRISLI 2.0 sensitivity experiments for the Antarctic ice sheet |
title_full |
GRISLI 2.0 sensitivity experiments for the Antarctic ice sheet |
title_fullStr |
GRISLI 2.0 sensitivity experiments for the Antarctic ice sheet |
title_full_unstemmed |
GRISLI 2.0 sensitivity experiments for the Antarctic ice sheet |
title_sort |
grisli 2.0 sensitivity experiments for the antarctic ice sheet |
publisher |
PANGAEA |
publishDate |
2022 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.942823 |
op_coverage |
MEDIAN LATITUDE: -72.330100 * MEDIAN LONGITUDE: 180.000000 * SOUTH-BOUND LATITUDE: -90.000000 * WEST-BOUND LONGITUDE: 180.000000 * NORTH-BOUND LATITUDE: -54.660200 * EAST-BOUND LONGITUDE: 180.000000 |
long_lat |
ENVELOPE(120.000,120.000,-69.000,-69.000) ENVELOPE(180.000000,180.000000,-54.660200,-90.000000) |
geographic |
Antarctic Southern Ocean The Antarctic Wilkes Land |
geographic_facet |
Antarctic Southern Ocean The Antarctic Wilkes Land |
genre |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ice Shelves North Atlantic Southern Ocean Wilkes Land |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ice Shelves North Atlantic Southern Ocean Wilkes Land |
op_relation |
GRISLI 2.0 sensitivity experiments for the Antarctic ice sheet (readme) (URI: https://download.pangaea.de/reference/112437/attachments/readme.txt) https://doi.pangaea.de/10.1594/PANGAEA.942823 |
op_rights |
Access constraints: access rights needed info:eu-repo/semantics/restrictedAccess |
_version_ |
1766128833715503104 |