Differing Climatic Mass Balance Evolution Across Svalbard Glacier Regions Over 1900–2010
Relatively little is known about the glacier mass balance of Svalbard in the first half of the twentieth century. Here, we present the first century-long climatic mass balance time series for the Svalbard archipelago. We use a parameterized mass balance model forced by statistically downscaled ERA-2...
Published in: | Frontiers in Earth Science |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Frontiers Media S.A.
2018
|
Subjects: | |
Online Access: | https://doi.org/10.3389/feart.2018.00128 https://doaj.org/article/6c14c09ca23742d5b2838da0c6509ba6 |
id |
ftdoajarticles:oai:doaj.org/article:6c14c09ca23742d5b2838da0c6509ba6 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:6c14c09ca23742d5b2838da0c6509ba6 2023-05-15T15:02:12+02:00 Differing Climatic Mass Balance Evolution Across Svalbard Glacier Regions Over 1900–2010 Marco Möller Jack Kohler 2018-09-01T00:00:00Z https://doi.org/10.3389/feart.2018.00128 https://doaj.org/article/6c14c09ca23742d5b2838da0c6509ba6 EN eng Frontiers Media S.A. https://www.frontiersin.org/article/10.3389/feart.2018.00128/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2018.00128 https://doaj.org/article/6c14c09ca23742d5b2838da0c6509ba6 Frontiers in Earth Science, Vol 6 (2018) glacier mass balance climate change modeling Svalbard Arctic Science Q article 2018 ftdoajarticles https://doi.org/10.3389/feart.2018.00128 2022-12-30T22:40:19Z Relatively little is known about the glacier mass balance of Svalbard in the first half of the twentieth century. Here, we present the first century-long climatic mass balance time series for the Svalbard archipelago. We use a parameterized mass balance model forced by statistically downscaled ERA-20C data to model climatic mass balance for all glacierized areas on Svalbard with a 250 m resolution for the period 1900–2010. Results are presented for the archipelago as a whole and separately for nine different subregions. We analyze the extent to which climatic mass balance in the different subregions mirror the temporal evolution of the climate warming signal, especially during the early twentieth century Arctic warming episode. The spatially averaged mean annual climatic mass balance for all Svalbard is balanced at −0.002 m w.e. with an associated mean equilibrium line altitude of 425 m a.s.l. When also taking calving fluxes into account, this status leads to an archipelago-wide cumulative mass balance of −16.9 m w.e. over the study period, equaling a sea level equivalent of ~1.6 mm. The long-term evolution of climatic mass balance is largely governed by ablation variability. Refreezing contributes 34% to the archipelago-wide mass gain on average. Considerable variability is evident across Svalbard, with predominantly positive climatic mass balances in the northeastern parts of the archipelago and mostly negative ones in the western and southern parts. The archipelago-wide climatic mass balance shows a statistically significant trend of −0.021 m w.e. per decade and the associated equilibrium line altitude rises with a likewise significant trend of +3.0 m a.s.l. per decade. Spatial variability of the equilibrium line is such that the lowest altitudes are reached across the eastern islands of the archipelago and the highest ones in the central parts of Spitsbergen. Article in Journal/Newspaper Arctic Climate change glacier Svalbard Spitsbergen Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Svalbard Archipelago Frontiers in Earth Science 6 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
glacier mass balance climate change modeling Svalbard Arctic Science Q |
spellingShingle |
glacier mass balance climate change modeling Svalbard Arctic Science Q Marco Möller Jack Kohler Differing Climatic Mass Balance Evolution Across Svalbard Glacier Regions Over 1900–2010 |
topic_facet |
glacier mass balance climate change modeling Svalbard Arctic Science Q |
description |
Relatively little is known about the glacier mass balance of Svalbard in the first half of the twentieth century. Here, we present the first century-long climatic mass balance time series for the Svalbard archipelago. We use a parameterized mass balance model forced by statistically downscaled ERA-20C data to model climatic mass balance for all glacierized areas on Svalbard with a 250 m resolution for the period 1900–2010. Results are presented for the archipelago as a whole and separately for nine different subregions. We analyze the extent to which climatic mass balance in the different subregions mirror the temporal evolution of the climate warming signal, especially during the early twentieth century Arctic warming episode. The spatially averaged mean annual climatic mass balance for all Svalbard is balanced at −0.002 m w.e. with an associated mean equilibrium line altitude of 425 m a.s.l. When also taking calving fluxes into account, this status leads to an archipelago-wide cumulative mass balance of −16.9 m w.e. over the study period, equaling a sea level equivalent of ~1.6 mm. The long-term evolution of climatic mass balance is largely governed by ablation variability. Refreezing contributes 34% to the archipelago-wide mass gain on average. Considerable variability is evident across Svalbard, with predominantly positive climatic mass balances in the northeastern parts of the archipelago and mostly negative ones in the western and southern parts. The archipelago-wide climatic mass balance shows a statistically significant trend of −0.021 m w.e. per decade and the associated equilibrium line altitude rises with a likewise significant trend of +3.0 m a.s.l. per decade. Spatial variability of the equilibrium line is such that the lowest altitudes are reached across the eastern islands of the archipelago and the highest ones in the central parts of Spitsbergen. |
format |
Article in Journal/Newspaper |
author |
Marco Möller Jack Kohler |
author_facet |
Marco Möller Jack Kohler |
author_sort |
Marco Möller |
title |
Differing Climatic Mass Balance Evolution Across Svalbard Glacier Regions Over 1900–2010 |
title_short |
Differing Climatic Mass Balance Evolution Across Svalbard Glacier Regions Over 1900–2010 |
title_full |
Differing Climatic Mass Balance Evolution Across Svalbard Glacier Regions Over 1900–2010 |
title_fullStr |
Differing Climatic Mass Balance Evolution Across Svalbard Glacier Regions Over 1900–2010 |
title_full_unstemmed |
Differing Climatic Mass Balance Evolution Across Svalbard Glacier Regions Over 1900–2010 |
title_sort |
differing climatic mass balance evolution across svalbard glacier regions over 1900–2010 |
publisher |
Frontiers Media S.A. |
publishDate |
2018 |
url |
https://doi.org/10.3389/feart.2018.00128 https://doaj.org/article/6c14c09ca23742d5b2838da0c6509ba6 |
geographic |
Arctic Svalbard Svalbard Archipelago |
geographic_facet |
Arctic Svalbard Svalbard Archipelago |
genre |
Arctic Climate change glacier Svalbard Spitsbergen |
genre_facet |
Arctic Climate change glacier Svalbard Spitsbergen |
op_source |
Frontiers in Earth Science, Vol 6 (2018) |
op_relation |
https://www.frontiersin.org/article/10.3389/feart.2018.00128/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2018.00128 https://doaj.org/article/6c14c09ca23742d5b2838da0c6509ba6 |
op_doi |
https://doi.org/10.3389/feart.2018.00128 |
container_title |
Frontiers in Earth Science |
container_volume |
6 |
_version_ |
1766334171270086656 |