21st century projections of surface mass balance changes for major drainage systems of the Greenland ice sheet
Outputs from the regional climate model Modèle Atmosphérique Régionale at a spatial resolution of 25 km are used to study 21st century projected surface mass balance (SMB) over six major drainage basins of the Greenland ice sheet (GrIS). The regional model is forced with the outputs of three differe...
Main Authors: | , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
IOP Publishing
2012
|
Subjects: | |
Online Access: | https://doi.org/10.7916/D8RN37R9 |
id |
ftcolumbiauniv:oai:academiccommons.columbia.edu:10.7916/D8RN37R9 |
---|---|
record_format |
openpolar |
spelling |
ftcolumbiauniv:oai:academiccommons.columbia.edu:10.7916/D8RN37R9 2023-05-15T16:27:58+02:00 21st century projections of surface mass balance changes for major drainage systems of the Greenland ice sheet Tedesco, Marco Fettweis, X. 2012 https://doi.org/10.7916/D8RN37R9 English eng IOP Publishing https://doi.org/10.7916/D8RN37R9 Hydrology Meltwater Geomorphology Runoff Climatic geomorphology Ice sheets Geology Climatic changes Articles 2012 ftcolumbiauniv https://doi.org/10.7916/D8RN37R9 2019-04-04T08:14:19Z Outputs from the regional climate model Modèle Atmosphérique Régionale at a spatial resolution of 25 km are used to study 21st century projected surface mass balance (SMB) over six major drainage basins of the Greenland ice sheet (GrIS). The regional model is forced with the outputs of three different Earth System Models (CanESM2, NorESM1 and MIROC5) obtained when considering two greenhouse gas future scenarios with levels of CO₂ equivalent of, respectively, 850 and >1370 ppm by 2100. Results indicate that the increase in runoff due to warming will exceed the increased precipitation deriving from the increase in evaporation for all basins, with the amount of net loss of mass at the surface varying spatially. Basins along the southwest and north coast are projected to have the highest sensitivity of SMB to increasing temperatures. For these basins, the global temperature anomaly corresponding to a decrease of the SMB below the 1980–99 average (when the ice sheet was near the equilibrium) ranges between +0.60 and +2.16 °C. For the basins along the northwest and northeast, these values range between +1.50 and +3.40 °C. Our results are conservative as they do not account for ice dynamics and changes in the ice sheet topography. Article in Journal/Newspaper Greenland Ice Sheet Columbia University: Academic Commons Greenland |
institution |
Open Polar |
collection |
Columbia University: Academic Commons |
op_collection_id |
ftcolumbiauniv |
language |
English |
topic |
Hydrology Meltwater Geomorphology Runoff Climatic geomorphology Ice sheets Geology Climatic changes |
spellingShingle |
Hydrology Meltwater Geomorphology Runoff Climatic geomorphology Ice sheets Geology Climatic changes Tedesco, Marco Fettweis, X. 21st century projections of surface mass balance changes for major drainage systems of the Greenland ice sheet |
topic_facet |
Hydrology Meltwater Geomorphology Runoff Climatic geomorphology Ice sheets Geology Climatic changes |
description |
Outputs from the regional climate model Modèle Atmosphérique Régionale at a spatial resolution of 25 km are used to study 21st century projected surface mass balance (SMB) over six major drainage basins of the Greenland ice sheet (GrIS). The regional model is forced with the outputs of three different Earth System Models (CanESM2, NorESM1 and MIROC5) obtained when considering two greenhouse gas future scenarios with levels of CO₂ equivalent of, respectively, 850 and >1370 ppm by 2100. Results indicate that the increase in runoff due to warming will exceed the increased precipitation deriving from the increase in evaporation for all basins, with the amount of net loss of mass at the surface varying spatially. Basins along the southwest and north coast are projected to have the highest sensitivity of SMB to increasing temperatures. For these basins, the global temperature anomaly corresponding to a decrease of the SMB below the 1980–99 average (when the ice sheet was near the equilibrium) ranges between +0.60 and +2.16 °C. For the basins along the northwest and northeast, these values range between +1.50 and +3.40 °C. Our results are conservative as they do not account for ice dynamics and changes in the ice sheet topography. |
format |
Article in Journal/Newspaper |
author |
Tedesco, Marco Fettweis, X. |
author_facet |
Tedesco, Marco Fettweis, X. |
author_sort |
Tedesco, Marco |
title |
21st century projections of surface mass balance changes for major drainage systems of the Greenland ice sheet |
title_short |
21st century projections of surface mass balance changes for major drainage systems of the Greenland ice sheet |
title_full |
21st century projections of surface mass balance changes for major drainage systems of the Greenland ice sheet |
title_fullStr |
21st century projections of surface mass balance changes for major drainage systems of the Greenland ice sheet |
title_full_unstemmed |
21st century projections of surface mass balance changes for major drainage systems of the Greenland ice sheet |
title_sort |
21st century projections of surface mass balance changes for major drainage systems of the greenland ice sheet |
publisher |
IOP Publishing |
publishDate |
2012 |
url |
https://doi.org/10.7916/D8RN37R9 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_relation |
https://doi.org/10.7916/D8RN37R9 |
op_doi |
https://doi.org/10.7916/D8RN37R9 |
_version_ |
1766017572294098944 |