Observationally constrained reconstruction of 19th to mid-20th century sea-ice extent off eastern Greenland
Arctic sea ice has a significant impact on the global radiation budget, oceanic and atmospheric circulation and the stability of the Greenland ice sheet (Vaughan et al. 2013). Prior to the era of aircraft and satellite, information on sea-ice extent relied on observations from ships and people livin...
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ftjgeusbullet:oai:geusjournals.org:article/4349 2024-09-15T18:08:52+00:00 Observationally constrained reconstruction of 19th to mid-20th century sea-ice extent off eastern Greenland Hallé, Danielle A.M. Karlsson, Nanna B. Munck Solgaard, Anne Andresen, Camilla S. 2018-08-15 application/pdf https://geusbulletin.org/index.php/geusb/article/view/4349 https://doi.org/10.34194/geusb.v41.4349 eng eng Geological Survey of Denmark and Greenland (GEUS) https://geusbulletin.org/index.php/geusb/article/view/4349/10093 https://geusbulletin.org/index.php/geusb/article/view/4349 doi:10.34194/geusb.v41.4349 GEUS Bulletin; Vol. 41 (2018): Review of Survey activities 2017; 83-86 2597-2154 2597-2162 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Rapid Communication. Peer-reviewed Article. 2018 ftjgeusbullet https://doi.org/10.34194/geusb.v41.4349 2024-08-06T03:03:36Z Arctic sea ice has a significant impact on the global radiation budget, oceanic and atmospheric circulation and the stability of the Greenland ice sheet (Vaughan et al. 2013). Prior to the era of aircraft and satellite, information on sea-ice extent relied on observations from ships and people living at the coast. This information is a valuable contribution to better understand the history of sea ice. However, the information exists in a range of formats, e.g., sea-ice extent before the late 1800s is typically reported in the literature as an annual index from a single geographical point or as hand-drawn maps. This makes it difficult to assess and compare data across time and space. The combination of digitised historical maps and single-point data makes the information more accessible and provides a record that can help understand the dynamics and processes of the climate and its interactions with the cryosphere (Chapman & Walsh 1993). In this study, maps of sea-ice extent by Koch (1945) were digitised. We use these maps in combination with sea-ice charts from the Danish Meteorological Institute (DMI) and Koch’s sea-ice index from 1820 to 1939, to map estimated sea-ice extent between Iceland and Greenland going back to 1821. This information has not been included in even the most recent databases of Arctic sea ice (Walsh et al. 2015, 2017). Furthermore, we extract time series of sea-ice extent at a number of locations and investigate the relationship between them. Our observation area is along eastern Greenland, between the southern tip of Greenland at 59°46´N northwards to 77°21´N. Article in Journal/Newspaper Greenland Ice Sheet Iceland Sea ice GEUS Bulletin (Geological Survey of Denmark and Greenland) Geological Survey of Denmark and Greenland Bulletin 83 86 |
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GEUS Bulletin (Geological Survey of Denmark and Greenland) |
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English |
description |
Arctic sea ice has a significant impact on the global radiation budget, oceanic and atmospheric circulation and the stability of the Greenland ice sheet (Vaughan et al. 2013). Prior to the era of aircraft and satellite, information on sea-ice extent relied on observations from ships and people living at the coast. This information is a valuable contribution to better understand the history of sea ice. However, the information exists in a range of formats, e.g., sea-ice extent before the late 1800s is typically reported in the literature as an annual index from a single geographical point or as hand-drawn maps. This makes it difficult to assess and compare data across time and space. The combination of digitised historical maps and single-point data makes the information more accessible and provides a record that can help understand the dynamics and processes of the climate and its interactions with the cryosphere (Chapman & Walsh 1993). In this study, maps of sea-ice extent by Koch (1945) were digitised. We use these maps in combination with sea-ice charts from the Danish Meteorological Institute (DMI) and Koch’s sea-ice index from 1820 to 1939, to map estimated sea-ice extent between Iceland and Greenland going back to 1821. This information has not been included in even the most recent databases of Arctic sea ice (Walsh et al. 2015, 2017). Furthermore, we extract time series of sea-ice extent at a number of locations and investigate the relationship between them. Our observation area is along eastern Greenland, between the southern tip of Greenland at 59°46´N northwards to 77°21´N. |
format |
Article in Journal/Newspaper |
author |
Hallé, Danielle A.M. Karlsson, Nanna B. Munck Solgaard, Anne Andresen, Camilla S. |
spellingShingle |
Hallé, Danielle A.M. Karlsson, Nanna B. Munck Solgaard, Anne Andresen, Camilla S. Observationally constrained reconstruction of 19th to mid-20th century sea-ice extent off eastern Greenland |
author_facet |
Hallé, Danielle A.M. Karlsson, Nanna B. Munck Solgaard, Anne Andresen, Camilla S. |
author_sort |
Hallé, Danielle A.M. |
title |
Observationally constrained reconstruction of 19th to mid-20th century sea-ice extent off eastern Greenland |
title_short |
Observationally constrained reconstruction of 19th to mid-20th century sea-ice extent off eastern Greenland |
title_full |
Observationally constrained reconstruction of 19th to mid-20th century sea-ice extent off eastern Greenland |
title_fullStr |
Observationally constrained reconstruction of 19th to mid-20th century sea-ice extent off eastern Greenland |
title_full_unstemmed |
Observationally constrained reconstruction of 19th to mid-20th century sea-ice extent off eastern Greenland |
title_sort |
observationally constrained reconstruction of 19th to mid-20th century sea-ice extent off eastern greenland |
publisher |
Geological Survey of Denmark and Greenland (GEUS) |
publishDate |
2018 |
url |
https://geusbulletin.org/index.php/geusb/article/view/4349 https://doi.org/10.34194/geusb.v41.4349 |
genre |
Greenland Ice Sheet Iceland Sea ice |
genre_facet |
Greenland Ice Sheet Iceland Sea ice |
op_source |
GEUS Bulletin; Vol. 41 (2018): Review of Survey activities 2017; 83-86 2597-2154 2597-2162 |
op_relation |
https://geusbulletin.org/index.php/geusb/article/view/4349/10093 https://geusbulletin.org/index.php/geusb/article/view/4349 doi:10.34194/geusb.v41.4349 |
op_doi |
https://doi.org/10.34194/geusb.v41.4349 |
container_title |
Geological Survey of Denmark and Greenland Bulletin |
container_start_page |
83 |
op_container_end_page |
86 |
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1810446235015839744 |