Variations of ablation, albedo and energy balance at the tnargin of the Greenland ice sheet, Kronprins Christian
ABSTRACT. A meteorological and glaciological experiment was carried out in July 1993 a t the margin of the. Greenl and ice sh ee t in KrOl"))Jrins. Christian Land, eastern north Greenl and. \Vlthm a small area (a bout 100 m-) d ally measurements were made on ten a bl ation stakes fi xed in &quo...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.429.9833 2023-05-15T16:21:32+02:00 Variations of ablation, albedo and energy balance at the tnargin of the Greenland ice sheet, Kronprins Christian Eastern North Greenl Thomas Konzelmakn Roger J. Braithwaite The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.429.9833 http://www.igsoc.org/journal/41/137/igs_journal_vol41_issue137_pg174-182.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.429.9833 http://www.igsoc.org/journal/41/137/igs_journal_vol41_issue137_pg174-182.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.igsoc.org/journal/41/137/igs_journal_vol41_issue137_pg174-182.pdf text ftciteseerx 2016-01-08T04:33:28Z ABSTRACT. A meteorological and glaciological experiment was carried out in July 1993 a t the margin of the. Greenl and ice sh ee t in KrOl"))Jrins. Christian Land, eastern north Greenl and. \Vlthm a small area (a bout 100 m-) d ally measurements were made on ten a bl ation stakes fi xed in " light " a nd " dark " ice and were compa red to each other. Simultaneo usly, the components of the energy bala nce, including net radiation, se nsible-heat flu x, la tent-heat flu x and conductive-heat flu x in the ice were determined. Global radiation, longwave incoming radiation a nd albedo were measured, a nd longwave outgoing radi ation was calculated by ass uming tha t the glacier surface was melting. Sensible- and latent-heat f1u xes were calculated from air temperature, humidity and wind speed. Conductive-heat flu x in the ice was es tima ted by temperature-profil e meas urem ents in th e uppermos t ice layer. N et radiation is the major source of a bla tion energy, and turbulcnt flu xes are smaller energy so urces by about three times, whil e heat flu x into the ice is a substantial heat sink, reducing energy avail a bl e fo r ice melt. Albedo vari es fro m 0.42 to 0.56 within the ex perimental site and causes rela ti vel y large differences in a bla ti on at stakes close to each other. Small-scale albedo variations sho uld th erefore be carefull y sampled for large-scale energy-balance calculations. Text glacier Greenland Ice Sheet Unknown Bala ENVELOPE(132.817,132.817,67.178,67.178) Greenland |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
ABSTRACT. A meteorological and glaciological experiment was carried out in July 1993 a t the margin of the. Greenl and ice sh ee t in KrOl"))Jrins. Christian Land, eastern north Greenl and. \Vlthm a small area (a bout 100 m-) d ally measurements were made on ten a bl ation stakes fi xed in " light " a nd " dark " ice and were compa red to each other. Simultaneo usly, the components of the energy bala nce, including net radiation, se nsible-heat flu x, la tent-heat flu x and conductive-heat flu x in the ice were determined. Global radiation, longwave incoming radiation a nd albedo were measured, a nd longwave outgoing radi ation was calculated by ass uming tha t the glacier surface was melting. Sensible- and latent-heat f1u xes were calculated from air temperature, humidity and wind speed. Conductive-heat flu x in the ice was es tima ted by temperature-profil e meas urem ents in th e uppermos t ice layer. N et radiation is the major source of a bla tion energy, and turbulcnt flu xes are smaller energy so urces by about three times, whil e heat flu x into the ice is a substantial heat sink, reducing energy avail a bl e fo r ice melt. Albedo vari es fro m 0.42 to 0.56 within the ex perimental site and causes rela ti vel y large differences in a bla ti on at stakes close to each other. Small-scale albedo variations sho uld th erefore be carefull y sampled for large-scale energy-balance calculations. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Eastern North Greenl Thomas Konzelmakn Roger J. Braithwaite |
spellingShingle |
Eastern North Greenl Thomas Konzelmakn Roger J. Braithwaite Variations of ablation, albedo and energy balance at the tnargin of the Greenland ice sheet, Kronprins Christian |
author_facet |
Eastern North Greenl Thomas Konzelmakn Roger J. Braithwaite |
author_sort |
Eastern North Greenl |
title |
Variations of ablation, albedo and energy balance at the tnargin of the Greenland ice sheet, Kronprins Christian |
title_short |
Variations of ablation, albedo and energy balance at the tnargin of the Greenland ice sheet, Kronprins Christian |
title_full |
Variations of ablation, albedo and energy balance at the tnargin of the Greenland ice sheet, Kronprins Christian |
title_fullStr |
Variations of ablation, albedo and energy balance at the tnargin of the Greenland ice sheet, Kronprins Christian |
title_full_unstemmed |
Variations of ablation, albedo and energy balance at the tnargin of the Greenland ice sheet, Kronprins Christian |
title_sort |
variations of ablation, albedo and energy balance at the tnargin of the greenland ice sheet, kronprins christian |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.429.9833 http://www.igsoc.org/journal/41/137/igs_journal_vol41_issue137_pg174-182.pdf |
long_lat |
ENVELOPE(132.817,132.817,67.178,67.178) |
geographic |
Bala Greenland |
geographic_facet |
Bala Greenland |
genre |
glacier Greenland Ice Sheet |
genre_facet |
glacier Greenland Ice Sheet |
op_source |
http://www.igsoc.org/journal/41/137/igs_journal_vol41_issue137_pg174-182.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.429.9833 http://www.igsoc.org/journal/41/137/igs_journal_vol41_issue137_pg174-182.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766009538962522112 |