Climatology and ablation at the South Greenland ice sheet margin from automatic weather station observations
We describe the climatology from a meteorological dataset acquired from automatic weather station observations done in the ablation zone of the Greenland Ice Sheet between 2001 and 2007. Stations were placed in three regions below the polar circle: on the southern tip of the ice sheet, on a calving...
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ftcopernicus:oai:publications.copernicus.org:tcd7052 2023-05-15T16:21:23+02:00 Climatology and ablation at the South Greenland ice sheet margin from automatic weather station observations As, D. Bøggild, C. E. Nielsen, S. Ahlstrøm, A. P. Fausto, R. S. Podlech, S. Andersen, M. L. 2018-09-26 application/pdf https://doi.org/10.5194/tcd-3-117-2009 https://tc.copernicus.org/preprints/tcd-2008-0039/ eng eng doi:10.5194/tcd-3-117-2009 https://tc.copernicus.org/preprints/tcd-2008-0039/ eISSN: 1994-0424 Text 2018 ftcopernicus https://doi.org/10.5194/tcd-3-117-2009 2020-07-20T16:26:45Z We describe the climatology from a meteorological dataset acquired from automatic weather station observations done in the ablation zone of the Greenland Ice Sheet between 2001 and 2007. Stations were placed in three regions below the polar circle: on the southern tip of the ice sheet, on a calving glacier in the Nuuk fjord, and on the south-eastern ice margin near Tasiilaq. The yearly cycles in temperature, relative humidity and wind speed reveal the largest variability in wintertime, causing annual values to depend largely on winter values. Adding to wintertime variability are extremely strong and cold katabatic wind events in the southeast (" piteraqs "). During summer no pronounced daily cycle in near-surface atmospheric parameters is recorded in the three regions, in spite of a large cycle in solar radiation, dominantly regulating surface melt. Net ablation is largest at the southernmost station due to low surface albedo, and can be up to six metres per year, but is highly sensitive to the timing of the start of the ice ablation season. Illustrative of this is that similar ablation amounts are found in the Nuuk fjord region where little or no snow accumulates in winter. Text glacier Greenland Ice Sheet Nuuk Tasiilaq Copernicus Publications: E-Journals Greenland Nuuk ENVELOPE(-52.150,-52.150,68.717,68.717) Tasiilaq ENVELOPE(-37.637,-37.637,65.615,65.615) |
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Open Polar |
collection |
Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
We describe the climatology from a meteorological dataset acquired from automatic weather station observations done in the ablation zone of the Greenland Ice Sheet between 2001 and 2007. Stations were placed in three regions below the polar circle: on the southern tip of the ice sheet, on a calving glacier in the Nuuk fjord, and on the south-eastern ice margin near Tasiilaq. The yearly cycles in temperature, relative humidity and wind speed reveal the largest variability in wintertime, causing annual values to depend largely on winter values. Adding to wintertime variability are extremely strong and cold katabatic wind events in the southeast (" piteraqs "). During summer no pronounced daily cycle in near-surface atmospheric parameters is recorded in the three regions, in spite of a large cycle in solar radiation, dominantly regulating surface melt. Net ablation is largest at the southernmost station due to low surface albedo, and can be up to six metres per year, but is highly sensitive to the timing of the start of the ice ablation season. Illustrative of this is that similar ablation amounts are found in the Nuuk fjord region where little or no snow accumulates in winter. |
format |
Text |
author |
As, D. Bøggild, C. E. Nielsen, S. Ahlstrøm, A. P. Fausto, R. S. Podlech, S. Andersen, M. L. |
spellingShingle |
As, D. Bøggild, C. E. Nielsen, S. Ahlstrøm, A. P. Fausto, R. S. Podlech, S. Andersen, M. L. Climatology and ablation at the South Greenland ice sheet margin from automatic weather station observations |
author_facet |
As, D. Bøggild, C. E. Nielsen, S. Ahlstrøm, A. P. Fausto, R. S. Podlech, S. Andersen, M. L. |
author_sort |
As, D. |
title |
Climatology and ablation at the South Greenland ice sheet margin from automatic weather station observations |
title_short |
Climatology and ablation at the South Greenland ice sheet margin from automatic weather station observations |
title_full |
Climatology and ablation at the South Greenland ice sheet margin from automatic weather station observations |
title_fullStr |
Climatology and ablation at the South Greenland ice sheet margin from automatic weather station observations |
title_full_unstemmed |
Climatology and ablation at the South Greenland ice sheet margin from automatic weather station observations |
title_sort |
climatology and ablation at the south greenland ice sheet margin from automatic weather station observations |
publishDate |
2018 |
url |
https://doi.org/10.5194/tcd-3-117-2009 https://tc.copernicus.org/preprints/tcd-2008-0039/ |
long_lat |
ENVELOPE(-52.150,-52.150,68.717,68.717) ENVELOPE(-37.637,-37.637,65.615,65.615) |
geographic |
Greenland Nuuk Tasiilaq |
geographic_facet |
Greenland Nuuk Tasiilaq |
genre |
glacier Greenland Ice Sheet Nuuk Tasiilaq |
genre_facet |
glacier Greenland Ice Sheet Nuuk Tasiilaq |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tcd-3-117-2009 https://tc.copernicus.org/preprints/tcd-2008-0039/ |
op_doi |
https://doi.org/10.5194/tcd-3-117-2009 |
_version_ |
1766009392438706176 |