Surface energy balance sensitivity to meteorological variability on Haig Glacier, Canadian Rocky Mountains
Energy exchanges between the atmosphere and the glacier surface control the net energy available for snow and ice melt. This paper explores the response of a midlatitude glacier in the Canadian Rocky Mountains to daily and interannual variations in the meteorological parameters that govern the surfa...
Published in: | The Cryosphere |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2016
|
Subjects: | |
Online Access: | https://doi.org/10.5194/tc-10-2799-2016 http://www.the-cryosphere.net/10/2799/2016/tc-10-2799-2016.pdf https://doaj.org/article/43ee2b7d87cc4c75a126febe508a805e |
id |
fttriple:oai:gotriple.eu:oai:doaj.org/article:43ee2b7d87cc4c75a126febe508a805e |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:oai:doaj.org/article:43ee2b7d87cc4c75a126febe508a805e 2023-05-15T18:32:21+02:00 Surface energy balance sensitivity to meteorological variability on Haig Glacier, Canadian Rocky Mountains S. Ebrahimi S. J. Marshall 2016-11-01 https://doi.org/10.5194/tc-10-2799-2016 http://www.the-cryosphere.net/10/2799/2016/tc-10-2799-2016.pdf https://doaj.org/article/43ee2b7d87cc4c75a126febe508a805e en eng Copernicus Publications 1994-0416 1994-0424 doi:10.5194/tc-10-2799-2016 http://www.the-cryosphere.net/10/2799/2016/tc-10-2799-2016.pdf https://doaj.org/article/43ee2b7d87cc4c75a126febe508a805e undefined The Cryosphere, Vol 10, Iss 6, Pp 2799-2819 (2016) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2016 fttriple https://doi.org/10.5194/tc-10-2799-2016 2023-01-22T19:33:20Z Energy exchanges between the atmosphere and the glacier surface control the net energy available for snow and ice melt. This paper explores the response of a midlatitude glacier in the Canadian Rocky Mountains to daily and interannual variations in the meteorological parameters that govern the surface energy balance. We use an energy balance model to run sensitivity tests to perturbations in temperature, specific humidity, wind speed, incoming shortwave radiation, glacier surface albedo, and winter snowpack depth. Variables are perturbed (i) in isolation, (ii) including internal feedbacks, and (iii) with co-evolution of meteorological perturbations, derived from the North American regional climate reanalysis (NARR) over the period 1979–2014. Summer melt at this site has the strongest sensitivity to interannual variations in temperature, albedo, and specific humidity, while fluctuations in cloud cover, wind speed, and winter snowpack depth have less influence. Feedbacks to temperature forcing, in particular summer albedo evolution, double the melt sensitivity to a temperature change. When meteorological perturbations covary through the NARR forcing, summer temperature anomalies remain important in driving interannual summer energy balance and melt variability, but they are reduced in importance relative to an isolated temperature forcing. Covariation of other variables (e.g., clear skies, giving reduced incoming longwave radiation) may be partially compensating for the increase in temperature. The methods introduced in this paper provide a framework that can be extended to compare the sensitivity of glaciers in different climate regimes, e.g., polar, maritime, or tropical environments, and to assess the importance of different meteorological parameters in different regions. Article in Journal/Newspaper The Cryosphere Unknown The Cryosphere 10 6 2799 2819 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir S. Ebrahimi S. J. Marshall Surface energy balance sensitivity to meteorological variability on Haig Glacier, Canadian Rocky Mountains |
topic_facet |
geo envir |
description |
Energy exchanges between the atmosphere and the glacier surface control the net energy available for snow and ice melt. This paper explores the response of a midlatitude glacier in the Canadian Rocky Mountains to daily and interannual variations in the meteorological parameters that govern the surface energy balance. We use an energy balance model to run sensitivity tests to perturbations in temperature, specific humidity, wind speed, incoming shortwave radiation, glacier surface albedo, and winter snowpack depth. Variables are perturbed (i) in isolation, (ii) including internal feedbacks, and (iii) with co-evolution of meteorological perturbations, derived from the North American regional climate reanalysis (NARR) over the period 1979–2014. Summer melt at this site has the strongest sensitivity to interannual variations in temperature, albedo, and specific humidity, while fluctuations in cloud cover, wind speed, and winter snowpack depth have less influence. Feedbacks to temperature forcing, in particular summer albedo evolution, double the melt sensitivity to a temperature change. When meteorological perturbations covary through the NARR forcing, summer temperature anomalies remain important in driving interannual summer energy balance and melt variability, but they are reduced in importance relative to an isolated temperature forcing. Covariation of other variables (e.g., clear skies, giving reduced incoming longwave radiation) may be partially compensating for the increase in temperature. The methods introduced in this paper provide a framework that can be extended to compare the sensitivity of glaciers in different climate regimes, e.g., polar, maritime, or tropical environments, and to assess the importance of different meteorological parameters in different regions. |
format |
Article in Journal/Newspaper |
author |
S. Ebrahimi S. J. Marshall |
author_facet |
S. Ebrahimi S. J. Marshall |
author_sort |
S. Ebrahimi |
title |
Surface energy balance sensitivity to meteorological variability on Haig Glacier, Canadian Rocky Mountains |
title_short |
Surface energy balance sensitivity to meteorological variability on Haig Glacier, Canadian Rocky Mountains |
title_full |
Surface energy balance sensitivity to meteorological variability on Haig Glacier, Canadian Rocky Mountains |
title_fullStr |
Surface energy balance sensitivity to meteorological variability on Haig Glacier, Canadian Rocky Mountains |
title_full_unstemmed |
Surface energy balance sensitivity to meteorological variability on Haig Glacier, Canadian Rocky Mountains |
title_sort |
surface energy balance sensitivity to meteorological variability on haig glacier, canadian rocky mountains |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/tc-10-2799-2016 http://www.the-cryosphere.net/10/2799/2016/tc-10-2799-2016.pdf https://doaj.org/article/43ee2b7d87cc4c75a126febe508a805e |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_source |
The Cryosphere, Vol 10, Iss 6, Pp 2799-2819 (2016) |
op_relation |
1994-0416 1994-0424 doi:10.5194/tc-10-2799-2016 http://www.the-cryosphere.net/10/2799/2016/tc-10-2799-2016.pdf https://doaj.org/article/43ee2b7d87cc4c75a126febe508a805e |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-10-2799-2016 |
container_title |
The Cryosphere |
container_volume |
10 |
container_issue |
6 |
container_start_page |
2799 |
op_container_end_page |
2819 |
_version_ |
1766216451373400064 |