Sensitivity of the Antarctic surface mass balance to oceanic perturbations
Regional climate models (RCMs) are suitable numerical tools to study the surface mass balance (SMB) of the wide polar ice sheets due to their high spatial resolution and polar-adapted physics. Nonetheless, RCMs are driven at their boundaries and over the ocean by reanalysis or global climate model (...
Main Authors: | , , , |
---|---|
Format: | Conference Object |
Language: | English |
Published: |
2017
|
Subjects: | |
Online Access: | https://orbi.uliege.be/handle/2268/216770 https://orbi.uliege.be/bitstream/2268/216770/1/AGU_2017.pdf |
id |
ftorbi:oai:orbi.ulg.ac.be:2268/216770 |
---|---|
record_format |
openpolar |
spelling |
ftorbi:oai:orbi.ulg.ac.be:2268/216770 2024-04-21T07:48:35+00:00 Sensitivity of the Antarctic surface mass balance to oceanic perturbations Kittel, Christoph Amory, Charles Agosta, Cécile Fettweis, Xavier 2017-12-15 https://orbi.uliege.be/handle/2268/216770 https://orbi.uliege.be/bitstream/2268/216770/1/AGU_2017.pdf en eng https://orbi.uliege.be/handle/2268/216770 info:hdl:2268/216770 https://orbi.uliege.be/bitstream/2268/216770/1/AGU_2017.pdf open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess AGU Fall meeting 2017, New-Orleans, United States - Louisiana [US-LA], 11/12/2017 to 15/12/12017 SMB ocean Antarctic Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique conference poster not in proceedings http://purl.org/coar/resource_type/c_18co info:eu-repo/semantics/conferencePoster 2017 ftorbi 2024-03-27T14:48:22Z Regional climate models (RCMs) are suitable numerical tools to study the surface mass balance (SMB) of the wide polar ice sheets due to their high spatial resolution and polar-adapted physics. Nonetheless, RCMs are driven at their boundaries and over the ocean by reanalysis or global climate model (GCM) products and are thus influenced by potential biases in these large-scale fields. These biases can be significant for both the atmosphere and the sea surface conditions (i.e. sea ice concentration and sea surface temperature). With the RCM MAR, a set of sensitivity experiments has been realized to assess the direct response of the SMB of the Antarctic ice sheet to oceanic perturbations. MAR is forced by ERA-Interim and anomalies based on mean GCM biases are introduced in sea surface conditions. Results show significant increases (decreases) of liquid and solid precipitation due to biases related to warm (cold) oceans. As precipitation is mainly caused by low-pressure systems that intrude into the continent and do not penetrate far inland, coastal areas are more sensitive than inland regions. Furthermore, warm ocean representative biases lead to anomalies as large as anomalies simulated by other RCMs or GCMs for the end of the 21st century. Conference Object Antarc* Antarctic Ice Sheet Sea ice University of Liège: ORBi (Open Repository and Bibliography) |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
SMB ocean Antarctic Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
SMB ocean Antarctic Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Kittel, Christoph Amory, Charles Agosta, Cécile Fettweis, Xavier Sensitivity of the Antarctic surface mass balance to oceanic perturbations |
topic_facet |
SMB ocean Antarctic Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
Regional climate models (RCMs) are suitable numerical tools to study the surface mass balance (SMB) of the wide polar ice sheets due to their high spatial resolution and polar-adapted physics. Nonetheless, RCMs are driven at their boundaries and over the ocean by reanalysis or global climate model (GCM) products and are thus influenced by potential biases in these large-scale fields. These biases can be significant for both the atmosphere and the sea surface conditions (i.e. sea ice concentration and sea surface temperature). With the RCM MAR, a set of sensitivity experiments has been realized to assess the direct response of the SMB of the Antarctic ice sheet to oceanic perturbations. MAR is forced by ERA-Interim and anomalies based on mean GCM biases are introduced in sea surface conditions. Results show significant increases (decreases) of liquid and solid precipitation due to biases related to warm (cold) oceans. As precipitation is mainly caused by low-pressure systems that intrude into the continent and do not penetrate far inland, coastal areas are more sensitive than inland regions. Furthermore, warm ocean representative biases lead to anomalies as large as anomalies simulated by other RCMs or GCMs for the end of the 21st century. |
format |
Conference Object |
author |
Kittel, Christoph Amory, Charles Agosta, Cécile Fettweis, Xavier |
author_facet |
Kittel, Christoph Amory, Charles Agosta, Cécile Fettweis, Xavier |
author_sort |
Kittel, Christoph |
title |
Sensitivity of the Antarctic surface mass balance to oceanic perturbations |
title_short |
Sensitivity of the Antarctic surface mass balance to oceanic perturbations |
title_full |
Sensitivity of the Antarctic surface mass balance to oceanic perturbations |
title_fullStr |
Sensitivity of the Antarctic surface mass balance to oceanic perturbations |
title_full_unstemmed |
Sensitivity of the Antarctic surface mass balance to oceanic perturbations |
title_sort |
sensitivity of the antarctic surface mass balance to oceanic perturbations |
publishDate |
2017 |
url |
https://orbi.uliege.be/handle/2268/216770 https://orbi.uliege.be/bitstream/2268/216770/1/AGU_2017.pdf |
genre |
Antarc* Antarctic Ice Sheet Sea ice |
genre_facet |
Antarc* Antarctic Ice Sheet Sea ice |
op_source |
AGU Fall meeting 2017, New-Orleans, United States - Louisiana [US-LA], 11/12/2017 to 15/12/12017 |
op_relation |
https://orbi.uliege.be/handle/2268/216770 info:hdl:2268/216770 https://orbi.uliege.be/bitstream/2268/216770/1/AGU_2017.pdf |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
_version_ |
1796950392182931456 |