Modeling glacier‐surface albedo across Svalbard for the 1979–2015 period: The HiRSvaC500‐α data set
Abstract Albedo is an important quantity for determining the energy balance of snow and ice surfaces and thus also for the mass balance of glaciers. It is especially important in polar regions where shortwave radiation fluxes typically provide most of the energy input to a glacier. In order to use a...
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ftdoajarticles:oai:doaj.org/article:28408919e6c04b22b9d527a098517cde 2023-10-01T03:49:52+02:00 Modeling glacier‐surface albedo across Svalbard for the 1979–2015 period: The HiRSvaC500‐α data set Marco Möller Rebecca Möller 2017-03-01T00:00:00Z https://doi.org/10.1002/2016MS000752 https://doaj.org/article/28408919e6c04b22b9d527a098517cde EN eng American Geophysical Union (AGU) https://doi.org/10.1002/2016MS000752 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1002/2016MS000752 https://doaj.org/article/28408919e6c04b22b9d527a098517cde Journal of Advances in Modeling Earth Systems, Vol 9, Iss 1, Pp 404-422 (2017) Albedo HiRSvaC500 geostatistical modeling Svalbard Arctic Physical geography GB3-5030 Oceanography GC1-1581 article 2017 ftdoajarticles https://doi.org/10.1002/2016MS000752 2023-09-03T00:54:18Z Abstract Albedo is an important quantity for determining the energy balance of snow and ice surfaces and thus also for the mass balance of glaciers. It is especially important in polar regions where shortwave radiation fluxes typically provide most of the energy input to a glacier. In order to use albedo data in any spatially distributed glaciological modeling, it is vital that the albedo fields are not only of high accuracy but also available on sufficiently high spatial resolution and in a manner that is consistent over time. This article presents the newly developed data set HiRSvaC500‐α, which provides daily updated, gapless albedo fields for all glacierized areas of the Arctic archipelago Svalbard on a 500 m resolution over the period 1979–2015. Albedo modeling for creation of the data set is done using a multistep geostatistical approach on the basis of remotely sensed Moderate Resolution Imaging Spectroradiometer (MODIS) albedo data and gridded ERA‐Interim climate data. Validation of the modeled HiRSvaC500‐α albedo fields against in situ albedo measurements at automatic weather stations operated on two different glaciers suggests that the accuracy of the newly developed data set lies close to that of remotely sensed MODIS albedo data. An analysis of the HiRSvaC500‐α albedo data set yields a mean annual‐average albedo of 0.754 across all glaciers of Svalbard over 1979–2015. A decrease of albedo with time is found, following a highly significant (95% level) trend of −0.010 per decade. For certain subregions, this trend even reaches up to −0.014 per decade. Article in Journal/Newspaper albedo Arctic Archipelago Arctic glacier Svalbard Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Journal of Advances in Modeling Earth Systems 9 1 404 422 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Albedo HiRSvaC500 geostatistical modeling Svalbard Arctic Physical geography GB3-5030 Oceanography GC1-1581 |
spellingShingle |
Albedo HiRSvaC500 geostatistical modeling Svalbard Arctic Physical geography GB3-5030 Oceanography GC1-1581 Marco Möller Rebecca Möller Modeling glacier‐surface albedo across Svalbard for the 1979–2015 period: The HiRSvaC500‐α data set |
topic_facet |
Albedo HiRSvaC500 geostatistical modeling Svalbard Arctic Physical geography GB3-5030 Oceanography GC1-1581 |
description |
Abstract Albedo is an important quantity for determining the energy balance of snow and ice surfaces and thus also for the mass balance of glaciers. It is especially important in polar regions where shortwave radiation fluxes typically provide most of the energy input to a glacier. In order to use albedo data in any spatially distributed glaciological modeling, it is vital that the albedo fields are not only of high accuracy but also available on sufficiently high spatial resolution and in a manner that is consistent over time. This article presents the newly developed data set HiRSvaC500‐α, which provides daily updated, gapless albedo fields for all glacierized areas of the Arctic archipelago Svalbard on a 500 m resolution over the period 1979–2015. Albedo modeling for creation of the data set is done using a multistep geostatistical approach on the basis of remotely sensed Moderate Resolution Imaging Spectroradiometer (MODIS) albedo data and gridded ERA‐Interim climate data. Validation of the modeled HiRSvaC500‐α albedo fields against in situ albedo measurements at automatic weather stations operated on two different glaciers suggests that the accuracy of the newly developed data set lies close to that of remotely sensed MODIS albedo data. An analysis of the HiRSvaC500‐α albedo data set yields a mean annual‐average albedo of 0.754 across all glaciers of Svalbard over 1979–2015. A decrease of albedo with time is found, following a highly significant (95% level) trend of −0.010 per decade. For certain subregions, this trend even reaches up to −0.014 per decade. |
format |
Article in Journal/Newspaper |
author |
Marco Möller Rebecca Möller |
author_facet |
Marco Möller Rebecca Möller |
author_sort |
Marco Möller |
title |
Modeling glacier‐surface albedo across Svalbard for the 1979–2015 period: The HiRSvaC500‐α data set |
title_short |
Modeling glacier‐surface albedo across Svalbard for the 1979–2015 period: The HiRSvaC500‐α data set |
title_full |
Modeling glacier‐surface albedo across Svalbard for the 1979–2015 period: The HiRSvaC500‐α data set |
title_fullStr |
Modeling glacier‐surface albedo across Svalbard for the 1979–2015 period: The HiRSvaC500‐α data set |
title_full_unstemmed |
Modeling glacier‐surface albedo across Svalbard for the 1979–2015 period: The HiRSvaC500‐α data set |
title_sort |
modeling glacier‐surface albedo across svalbard for the 1979–2015 period: the hirsvac500‐α data set |
publisher |
American Geophysical Union (AGU) |
publishDate |
2017 |
url |
https://doi.org/10.1002/2016MS000752 https://doaj.org/article/28408919e6c04b22b9d527a098517cde |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
albedo Arctic Archipelago Arctic glacier Svalbard |
genre_facet |
albedo Arctic Archipelago Arctic glacier Svalbard |
op_source |
Journal of Advances in Modeling Earth Systems, Vol 9, Iss 1, Pp 404-422 (2017) |
op_relation |
https://doi.org/10.1002/2016MS000752 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1002/2016MS000752 https://doaj.org/article/28408919e6c04b22b9d527a098517cde |
op_doi |
https://doi.org/10.1002/2016MS000752 |
container_title |
Journal of Advances in Modeling Earth Systems |
container_volume |
9 |
container_issue |
1 |
container_start_page |
404 |
op_container_end_page |
422 |
_version_ |
1778516816232972288 |