Climate change and forest fires synergistically drive widespread melt events of the Greenland Ice Sheet
Through an examination of shallow ice cores covering a wide area of the Greenland Ice Sheet (GIS), we show that the same mechanism drove two widespread melt events that occurred over 100 years apart, in 1889 and 2012. We found that black carbon from forest fires and rising temperatures combined to c...
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4050608 http://www.ncbi.nlm.nih.gov/pubmed/24843158 https://doi.org/10.1073/pnas.1405397111 |
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ftpubmed:oai:pubmedcentral.nih.gov:4050608 2023-05-15T16:26:58+02:00 Climate change and forest fires synergistically drive widespread melt events of the Greenland Ice Sheet Keegan, Kaitlin M. Albert, Mary R. McConnell, Joseph R. Baker, Ian 2014-06-03 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4050608 http://www.ncbi.nlm.nih.gov/pubmed/24843158 https://doi.org/10.1073/pnas.1405397111 en eng National Academy of Sciences http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/24843158 http://dx.doi.org/10.1073/pnas.1405397111 Freely available online through the PNAS open access option. Physical Sciences Text 2014 ftpubmed https://doi.org/10.1073/pnas.1405397111 2014-06-22T00:50:16Z Through an examination of shallow ice cores covering a wide area of the Greenland Ice Sheet (GIS), we show that the same mechanism drove two widespread melt events that occurred over 100 years apart, in 1889 and 2012. We found that black carbon from forest fires and rising temperatures combined to cause both of these events, and that continued climate change may result in nearly annual melting of the surface of the GIS by the year 2100. In addition, a positive feedback mechanism may be set in motion whereby melt water is retained as refrozen ice layers within the snow pack, causing lower albedo and leaving the ice sheet surface even more susceptible to future melting. Text Greenland Ice Sheet PubMed Central (PMC) Greenland Proceedings of the National Academy of Sciences 111 22 7964 7967 |
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English |
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Physical Sciences |
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Physical Sciences Keegan, Kaitlin M. Albert, Mary R. McConnell, Joseph R. Baker, Ian Climate change and forest fires synergistically drive widespread melt events of the Greenland Ice Sheet |
topic_facet |
Physical Sciences |
description |
Through an examination of shallow ice cores covering a wide area of the Greenland Ice Sheet (GIS), we show that the same mechanism drove two widespread melt events that occurred over 100 years apart, in 1889 and 2012. We found that black carbon from forest fires and rising temperatures combined to cause both of these events, and that continued climate change may result in nearly annual melting of the surface of the GIS by the year 2100. In addition, a positive feedback mechanism may be set in motion whereby melt water is retained as refrozen ice layers within the snow pack, causing lower albedo and leaving the ice sheet surface even more susceptible to future melting. |
format |
Text |
author |
Keegan, Kaitlin M. Albert, Mary R. McConnell, Joseph R. Baker, Ian |
author_facet |
Keegan, Kaitlin M. Albert, Mary R. McConnell, Joseph R. Baker, Ian |
author_sort |
Keegan, Kaitlin M. |
title |
Climate change and forest fires synergistically drive widespread melt events of the Greenland Ice Sheet |
title_short |
Climate change and forest fires synergistically drive widespread melt events of the Greenland Ice Sheet |
title_full |
Climate change and forest fires synergistically drive widespread melt events of the Greenland Ice Sheet |
title_fullStr |
Climate change and forest fires synergistically drive widespread melt events of the Greenland Ice Sheet |
title_full_unstemmed |
Climate change and forest fires synergistically drive widespread melt events of the Greenland Ice Sheet |
title_sort |
climate change and forest fires synergistically drive widespread melt events of the greenland ice sheet |
publisher |
National Academy of Sciences |
publishDate |
2014 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4050608 http://www.ncbi.nlm.nih.gov/pubmed/24843158 https://doi.org/10.1073/pnas.1405397111 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/24843158 http://dx.doi.org/10.1073/pnas.1405397111 |
op_rights |
Freely available online through the PNAS open access option. |
op_doi |
https://doi.org/10.1073/pnas.1405397111 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
111 |
container_issue |
22 |
container_start_page |
7964 |
op_container_end_page |
7967 |
_version_ |
1766015992163467264 |