What Darkens the Greenland Ice Sheet?
peer reviewed Most of the massive ice sheet that covers roughly four fifths of Greenland melts at the surface in summer. As long as the ice sheet regains its mass in the winter, this is not catastrophic. However, if the ice sheet melted entirely, sea levels would rise by more than 7 meters, with obv...
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American Geophysical Union
2015
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Online Access: | https://orbi.uliege.be/handle/2268/186025 https://orbi.uliege.be/bitstream/2268/186025/1/What%20Darkens%20the%20Greenland%20Ice%20Sheet_%20-%20Eos.pdf https://doi.org/10.1029/2015EO035773 |
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ftorbi:oai:orbi.ulg.ac.be:2268/186025 2024-04-21T08:03:30+00:00 What Darkens the Greenland Ice Sheet? Tedesco, M Doherty, S. Warren, S. Tranter, M. Stroeve, J. Fettweis, Xavier Alexander, P. 2015-09-17 https://orbi.uliege.be/handle/2268/186025 https://orbi.uliege.be/bitstream/2268/186025/1/What%20Darkens%20the%20Greenland%20Ice%20Sheet_%20-%20Eos.pdf https://doi.org/10.1029/2015EO035773 en eng American Geophysical Union http://eos.org/opinions/what-darkens-the-greenland-ice-sheet urn:issn:0096-3941 urn:issn:2324-9250 https://orbi.uliege.be/handle/2268/186025 info:hdl:2268/186025 https://orbi.uliege.be/bitstream/2268/186025/1/What%20Darkens%20the%20Greenland%20Ice%20Sheet_%20-%20Eos.pdf doi:10.1029/2015EO035773 scopus-id:2-s2.0-84949870401 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess EOS (2015-09-17) Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2015 ftorbi https://doi.org/10.1029/2015EO035773 2024-03-27T14:53:04Z peer reviewed Most of the massive ice sheet that covers roughly four fifths of Greenland melts at the surface in summer. As long as the ice sheet regains its mass in the winter, this is not catastrophic. However, if the ice sheet melted entirely, sea levels would rise by more than 7 meters, with obvious and severe consequences for human civilization. Not surprisingly, scientists are working hard to determine if and when the ice sheet will transition (or if it has already transitioned) from a stable state to a net mass loss state. The impact of increasing greenhouse gas levels on the Greenland ice sheet (GrIS) depends on many complex and interacting factors. One is the ice sheet’s albedo—the fraction of incoming solar radiation that is reflected from the surface of the ice sheet. Indeed, scientists have determined that net solar radiation reaching the ice is the largest contributor to the energy balance driving melting [e.g., van den Broeke et al., 2011]. Despite the crucial role of albedo in energy balance, we have yet to quantify the role of the different processes driving it. Such an understanding is crucial to determining the past behavior of the GrIS and projecting its future contribution to sea level rise. Scientists seeking to quantify how much various factors contribute to ice sheet albedo face numerous challenges. These include intrinsic limitations in current observational capabilities (e.g., spatial and radiometric resolution of currently available spaceborne sensors) and limitations on how accurately surface energy balance models handle ice sheet albedo. Moreover, the sparseness in space and time of in situ observations of quantities such as impurity concentrations, biological processes, and grain growth impedes our ability to separate their respective contributions to broadband albedo (integrated over the entire spectrum). Article in Journal/Newspaper Greenland Ice Sheet University of Liège: ORBi (Open Repository and Bibliography) Eos 96 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Tedesco, M Doherty, S. Warren, S. Tranter, M. Stroeve, J. Fettweis, Xavier Alexander, P. What Darkens the Greenland Ice Sheet? |
topic_facet |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed Most of the massive ice sheet that covers roughly four fifths of Greenland melts at the surface in summer. As long as the ice sheet regains its mass in the winter, this is not catastrophic. However, if the ice sheet melted entirely, sea levels would rise by more than 7 meters, with obvious and severe consequences for human civilization. Not surprisingly, scientists are working hard to determine if and when the ice sheet will transition (or if it has already transitioned) from a stable state to a net mass loss state. The impact of increasing greenhouse gas levels on the Greenland ice sheet (GrIS) depends on many complex and interacting factors. One is the ice sheet’s albedo—the fraction of incoming solar radiation that is reflected from the surface of the ice sheet. Indeed, scientists have determined that net solar radiation reaching the ice is the largest contributor to the energy balance driving melting [e.g., van den Broeke et al., 2011]. Despite the crucial role of albedo in energy balance, we have yet to quantify the role of the different processes driving it. Such an understanding is crucial to determining the past behavior of the GrIS and projecting its future contribution to sea level rise. Scientists seeking to quantify how much various factors contribute to ice sheet albedo face numerous challenges. These include intrinsic limitations in current observational capabilities (e.g., spatial and radiometric resolution of currently available spaceborne sensors) and limitations on how accurately surface energy balance models handle ice sheet albedo. Moreover, the sparseness in space and time of in situ observations of quantities such as impurity concentrations, biological processes, and grain growth impedes our ability to separate their respective contributions to broadband albedo (integrated over the entire spectrum). |
format |
Article in Journal/Newspaper |
author |
Tedesco, M Doherty, S. Warren, S. Tranter, M. Stroeve, J. Fettweis, Xavier Alexander, P. |
author_facet |
Tedesco, M Doherty, S. Warren, S. Tranter, M. Stroeve, J. Fettweis, Xavier Alexander, P. |
author_sort |
Tedesco, M |
title |
What Darkens the Greenland Ice Sheet? |
title_short |
What Darkens the Greenland Ice Sheet? |
title_full |
What Darkens the Greenland Ice Sheet? |
title_fullStr |
What Darkens the Greenland Ice Sheet? |
title_full_unstemmed |
What Darkens the Greenland Ice Sheet? |
title_sort |
what darkens the greenland ice sheet? |
publisher |
American Geophysical Union |
publishDate |
2015 |
url |
https://orbi.uliege.be/handle/2268/186025 https://orbi.uliege.be/bitstream/2268/186025/1/What%20Darkens%20the%20Greenland%20Ice%20Sheet_%20-%20Eos.pdf https://doi.org/10.1029/2015EO035773 |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
EOS (2015-09-17) |
op_relation |
http://eos.org/opinions/what-darkens-the-greenland-ice-sheet urn:issn:0096-3941 urn:issn:2324-9250 https://orbi.uliege.be/handle/2268/186025 info:hdl:2268/186025 https://orbi.uliege.be/bitstream/2268/186025/1/What%20Darkens%20the%20Greenland%20Ice%20Sheet_%20-%20Eos.pdf doi:10.1029/2015EO035773 scopus-id:2-s2.0-84949870401 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2015EO035773 |
container_title |
Eos |
container_volume |
96 |
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1796943320070488064 |