Reconstructing Greenland ice sheet runoff using coralline algae
The Greenland ice sheet (GrIS) contains the largest store of fresh water in the Northern Hemisphere, equivalent to ∼7.4 m of eustatic sea-level rise, but its impacts on current, past, and future sea level, ocean circulation, and European climate are poorly understood. Previous estimates of GrIS melt...
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Geological Society of America
2012
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ftuglasgow:oai:eprints.gla.ac.uk:70170 2023-05-15T16:26:38+02:00 Reconstructing Greenland ice sheet runoff using coralline algae Kamenos, N.A. Hoey, T.B. Nienow, P. Fallick, A.E. Claverie, T. 2012-12 http://eprints.gla.ac.uk/70170/ unknown Geological Society of America Kamenos, N.A. <http://eprints.gla.ac.uk/view/author/9996.html> , Hoey, T.B. <http://eprints.gla.ac.uk/view/author/12581.html> , Nienow, P., Fallick, A.E. <http://eprints.gla.ac.uk/view/author/1774.html> and Claverie, T. (2012) Reconstructing Greenland ice sheet runoff using coralline algae. Geology <http://eprints.gla.ac.uk/view/journal_volume/Geology.html>, 40(12), pp. 1095-1098. (doi:10.1130/G33405.1 <http://dx.doi.org/10.1130/G33405.1>) QE Geology Articles PeerReviewed 2012 ftuglasgow https://doi.org/10.1130/G33405.1 2021-09-23T22:48:12Z The Greenland ice sheet (GrIS) contains the largest store of fresh water in the Northern Hemisphere, equivalent to ∼7.4 m of eustatic sea-level rise, but its impacts on current, past, and future sea level, ocean circulation, and European climate are poorly understood. Previous estimates of GrIS melt, from 26 yr of satellite observations and temperature-driven melt models over 48 yr, show increasing melt trends. There are, however, no runoff data of comparable duration with which to validate the relationship between the spatial extent of melting and runoff or temperature-based runoff models. Further, longer runoff records are needed to extend the melt pattern of Greenland to centennial timescales, enabling recent observations and trends to be put into a better historical context. We have developed a new GrIS runoff proxy by extracting information on relative salinity changes from annual growth bands of red coralline algae. We observed significant negative relationships between historic runoff, relative salinity, and marine summer temperature in Søndre Strømfjord, Greenland. We produce the first reconstruction of runoff from a section of the GrIS that discharges into Søndre Strømfjord over several decades (1939–2002) and record a trend of increasing reconstructed runoff since the mid 1980s. In situ summer marine temperatures followed an equivalent trend. We suggest that since A.D. 1939, atmospheric temperatures have been important in forcing runoff. These results show that our technique has significant potential to enhance understanding of runoff from large ice sheets as it will enable melt reconstruction over centennial to millennial timescales. Article in Journal/Newspaper Greenland Ice Sheet Søndre strømfjord University of Glasgow: Enlighten - Publications Greenland Geology 40 12 1095 1098 |
institution |
Open Polar |
collection |
University of Glasgow: Enlighten - Publications |
op_collection_id |
ftuglasgow |
language |
unknown |
topic |
QE Geology |
spellingShingle |
QE Geology Kamenos, N.A. Hoey, T.B. Nienow, P. Fallick, A.E. Claverie, T. Reconstructing Greenland ice sheet runoff using coralline algae |
topic_facet |
QE Geology |
description |
The Greenland ice sheet (GrIS) contains the largest store of fresh water in the Northern Hemisphere, equivalent to ∼7.4 m of eustatic sea-level rise, but its impacts on current, past, and future sea level, ocean circulation, and European climate are poorly understood. Previous estimates of GrIS melt, from 26 yr of satellite observations and temperature-driven melt models over 48 yr, show increasing melt trends. There are, however, no runoff data of comparable duration with which to validate the relationship between the spatial extent of melting and runoff or temperature-based runoff models. Further, longer runoff records are needed to extend the melt pattern of Greenland to centennial timescales, enabling recent observations and trends to be put into a better historical context. We have developed a new GrIS runoff proxy by extracting information on relative salinity changes from annual growth bands of red coralline algae. We observed significant negative relationships between historic runoff, relative salinity, and marine summer temperature in Søndre Strømfjord, Greenland. We produce the first reconstruction of runoff from a section of the GrIS that discharges into Søndre Strømfjord over several decades (1939–2002) and record a trend of increasing reconstructed runoff since the mid 1980s. In situ summer marine temperatures followed an equivalent trend. We suggest that since A.D. 1939, atmospheric temperatures have been important in forcing runoff. These results show that our technique has significant potential to enhance understanding of runoff from large ice sheets as it will enable melt reconstruction over centennial to millennial timescales. |
format |
Article in Journal/Newspaper |
author |
Kamenos, N.A. Hoey, T.B. Nienow, P. Fallick, A.E. Claverie, T. |
author_facet |
Kamenos, N.A. Hoey, T.B. Nienow, P. Fallick, A.E. Claverie, T. |
author_sort |
Kamenos, N.A. |
title |
Reconstructing Greenland ice sheet runoff using coralline algae |
title_short |
Reconstructing Greenland ice sheet runoff using coralline algae |
title_full |
Reconstructing Greenland ice sheet runoff using coralline algae |
title_fullStr |
Reconstructing Greenland ice sheet runoff using coralline algae |
title_full_unstemmed |
Reconstructing Greenland ice sheet runoff using coralline algae |
title_sort |
reconstructing greenland ice sheet runoff using coralline algae |
publisher |
Geological Society of America |
publishDate |
2012 |
url |
http://eprints.gla.ac.uk/70170/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet Søndre strømfjord |
genre_facet |
Greenland Ice Sheet Søndre strømfjord |
op_relation |
Kamenos, N.A. <http://eprints.gla.ac.uk/view/author/9996.html> , Hoey, T.B. <http://eprints.gla.ac.uk/view/author/12581.html> , Nienow, P., Fallick, A.E. <http://eprints.gla.ac.uk/view/author/1774.html> and Claverie, T. (2012) Reconstructing Greenland ice sheet runoff using coralline algae. Geology <http://eprints.gla.ac.uk/view/journal_volume/Geology.html>, 40(12), pp. 1095-1098. (doi:10.1130/G33405.1 <http://dx.doi.org/10.1130/G33405.1>) |
op_doi |
https://doi.org/10.1130/G33405.1 |
container_title |
Geology |
container_volume |
40 |
container_issue |
12 |
container_start_page |
1095 |
op_container_end_page |
1098 |
_version_ |
1766015570979848192 |