Supplementary data for: "Historical glacier change on Svalbard predicts doubling of mass loss by 2100"
Supplementary datasets for: Geyman, E.C., van Pelt, W.J.J., Maloof, A.C., Faste Aas, H., and Kohler, J., 2022. "Historical glacier change on Svalbard predicts doubling of mass loss by 2100." Nature. Abstract: The melting of glaciers and ice caps accounts for about one-third of current sea-...
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ftzenodo:oai:zenodo.org:5806388 2023-05-15T13:32:17+02:00 Supplementary data for: "Historical glacier change on Svalbard predicts doubling of mass loss by 2100" Emily Geyman Ward van Pelt Adam Maloof Harald Faste Aas Jack Kohler 2021-11-04 https://zenodo.org/record/5806388 https://doi.org/10.5281/zenodo.5806388 unknown doi:10.5281/zenodo.5644414 https://zenodo.org/record/5806388 https://doi.org/10.5281/zenodo.5806388 oai:zenodo.org:5806388 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode glaciers climate historical photogrammetry DEM Svalbard info:eu-repo/semantics/other dataset 2021 ftzenodo https://doi.org/10.5281/zenodo.580638810.5281/zenodo.5644414 2023-03-11T02:59:56Z Supplementary datasets for: Geyman, E.C., van Pelt, W.J.J., Maloof, A.C., Faste Aas, H., and Kohler, J., 2022. "Historical glacier change on Svalbard predicts doubling of mass loss by 2100." Nature. Abstract: The melting of glaciers and ice caps accounts for about one-third of current sea-level rise, exceeding the mass loss from the more voluminous Greenland or Antarctic Ice Sheets. The Arctic archipelago of Svalbard, which hosts spatial climate gradients that are larger than the expected temporal climate shifts over the next century, is a natural laboratory to constrain the climate sensitivity of glaciers and predict their response to future warming. Here we link historical and modern glacier observations to predict that twenty-first century glacier thinning rates will more than double those from 1936 to 2010. Making use of an archive of historical aerial imagery from 1936 and 1938, we use structure-from-motion photogrammetry to reconstruct the three-dimensional geometry of 1,594 glaciers across Svalbard. We compare these reconstructions to modern ice elevation data to derive the spatial pattern of mass balance over a more than 70-year timespan, enabling us to see through the noise of annual and decadal variability to quantify how variables such as temperature and precipitation control ice loss. We find a robust temperature dependence of melt rates, whereby a 1°C rise in mean summer temperature corresponds to a decrease in area-normalized mass balance of -0.28 m yr-1 of water equivalent. Finally, we design a space-for-time substitution8 to combine our historical glacier observations with climate projections and make first-order predictions of twenty-first century glacier change across Svalbard. Dataset description: This dataset contains the digital elevation models (DEMs), elevation change maps, point clouds, orthophotos, and vector outlines of glacier extents based on the Norwegian Polar Institute's collection of 5,507 high-oblique aerial images captured over Svalbard in 1936/1938. The photographs were ... Dataset Antarc* Antarctic Arctic Archipelago Arctic glacier glacier Greenland Svalbard Zenodo Arctic Antarctic Svalbard Greenland Van Pelt ENVELOPE(35.717,35.717,-71.250,-71.250) |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
glaciers climate historical photogrammetry DEM Svalbard |
spellingShingle |
glaciers climate historical photogrammetry DEM Svalbard Emily Geyman Ward van Pelt Adam Maloof Harald Faste Aas Jack Kohler Supplementary data for: "Historical glacier change on Svalbard predicts doubling of mass loss by 2100" |
topic_facet |
glaciers climate historical photogrammetry DEM Svalbard |
description |
Supplementary datasets for: Geyman, E.C., van Pelt, W.J.J., Maloof, A.C., Faste Aas, H., and Kohler, J., 2022. "Historical glacier change on Svalbard predicts doubling of mass loss by 2100." Nature. Abstract: The melting of glaciers and ice caps accounts for about one-third of current sea-level rise, exceeding the mass loss from the more voluminous Greenland or Antarctic Ice Sheets. The Arctic archipelago of Svalbard, which hosts spatial climate gradients that are larger than the expected temporal climate shifts over the next century, is a natural laboratory to constrain the climate sensitivity of glaciers and predict their response to future warming. Here we link historical and modern glacier observations to predict that twenty-first century glacier thinning rates will more than double those from 1936 to 2010. Making use of an archive of historical aerial imagery from 1936 and 1938, we use structure-from-motion photogrammetry to reconstruct the three-dimensional geometry of 1,594 glaciers across Svalbard. We compare these reconstructions to modern ice elevation data to derive the spatial pattern of mass balance over a more than 70-year timespan, enabling us to see through the noise of annual and decadal variability to quantify how variables such as temperature and precipitation control ice loss. We find a robust temperature dependence of melt rates, whereby a 1°C rise in mean summer temperature corresponds to a decrease in area-normalized mass balance of -0.28 m yr-1 of water equivalent. Finally, we design a space-for-time substitution8 to combine our historical glacier observations with climate projections and make first-order predictions of twenty-first century glacier change across Svalbard. Dataset description: This dataset contains the digital elevation models (DEMs), elevation change maps, point clouds, orthophotos, and vector outlines of glacier extents based on the Norwegian Polar Institute's collection of 5,507 high-oblique aerial images captured over Svalbard in 1936/1938. The photographs were ... |
format |
Dataset |
author |
Emily Geyman Ward van Pelt Adam Maloof Harald Faste Aas Jack Kohler |
author_facet |
Emily Geyman Ward van Pelt Adam Maloof Harald Faste Aas Jack Kohler |
author_sort |
Emily Geyman |
title |
Supplementary data for: "Historical glacier change on Svalbard predicts doubling of mass loss by 2100" |
title_short |
Supplementary data for: "Historical glacier change on Svalbard predicts doubling of mass loss by 2100" |
title_full |
Supplementary data for: "Historical glacier change on Svalbard predicts doubling of mass loss by 2100" |
title_fullStr |
Supplementary data for: "Historical glacier change on Svalbard predicts doubling of mass loss by 2100" |
title_full_unstemmed |
Supplementary data for: "Historical glacier change on Svalbard predicts doubling of mass loss by 2100" |
title_sort |
supplementary data for: "historical glacier change on svalbard predicts doubling of mass loss by 2100" |
publishDate |
2021 |
url |
https://zenodo.org/record/5806388 https://doi.org/10.5281/zenodo.5806388 |
long_lat |
ENVELOPE(35.717,35.717,-71.250,-71.250) |
geographic |
Arctic Antarctic Svalbard Greenland Van Pelt |
geographic_facet |
Arctic Antarctic Svalbard Greenland Van Pelt |
genre |
Antarc* Antarctic Arctic Archipelago Arctic glacier glacier Greenland Svalbard |
genre_facet |
Antarc* Antarctic Arctic Archipelago Arctic glacier glacier Greenland Svalbard |
op_relation |
doi:10.5281/zenodo.5644414 https://zenodo.org/record/5806388 https://doi.org/10.5281/zenodo.5806388 oai:zenodo.org:5806388 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.580638810.5281/zenodo.5644414 |
_version_ |
1766025570587508736 |