A strategy to represent impacts of subgrid-scale topography on snow evolution in the Canadian Land Surface Scheme
This sensitivity study applies the offline Canadian Land Surface Scheme (CLASS) version 3.6 to simulate snowpack evolution in idealized topography using observations at Likely, British Columbia, Canada over 1 July 2008 to 30 June 2009. A strategy for a subgrid-scale snow (SSS) parameterization is de...
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Cambridge University Press
2017
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Online Access: | https://doi.org/10.1017/aog.2017.29 https://doaj.org/article/bb091a0b51244f22825de1b095424665 |
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ftdoajarticles:oai:doaj.org/article:bb091a0b51244f22825de1b095424665 2023-05-15T13:29:33+02:00 A strategy to represent impacts of subgrid-scale topography on snow evolution in the Canadian Land Surface Scheme Waqar Younas Rachel W. Hay Matt K. MacDonald Siraj ul Islam Stephen J. Déry 2017-07-01T00:00:00Z https://doi.org/10.1017/aog.2017.29 https://doaj.org/article/bb091a0b51244f22825de1b095424665 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0260305517000295/type/journal_article https://doaj.org/toc/0260-3055 https://doaj.org/toc/1727-5644 doi:10.1017/aog.2017.29 0260-3055 1727-5644 https://doaj.org/article/bb091a0b51244f22825de1b095424665 Annals of Glaciology, Vol 58, Pp 1-10 (2017) accumulation snow snow/ice surface processes surface mass budget Meteorology. Climatology QC851-999 article 2017 ftdoajarticles https://doi.org/10.1017/aog.2017.29 2023-03-12T01:31:57Z This sensitivity study applies the offline Canadian Land Surface Scheme (CLASS) version 3.6 to simulate snowpack evolution in idealized topography using observations at Likely, British Columbia, Canada over 1 July 2008 to 30 June 2009. A strategy for a subgrid-scale snow (SSS) parameterization is developed to incorporate two key features: ten elevation bands at 100 m intervals to capture air temperature lapse rates, and five slope angles on four aspects to resolve solar radiation impacts on the evolution of snow depth and SWE. Simulations reveal strong elevational dependencies of snow depth and SWE when adjusting temperatures using a moist adiabatic lapse rate with elevation, with 26% peak SWE differences between that at the average elevation versus the mean of the remainder of the elevation bands. Differences in peak SWE on north- and south-facing slopes increase from 3.0 mm at 10° slope to 17.9 mm at 50° slope. When applied to elevation, slope and aspect combinations derived from a high-resolution digital elevation model, elevation dominates the control of peak SWE values. Inclusion of the range of SSS effects into a regional climate model will improve snowpack and hydrological simulations of western North America's snow-dominated, mountainous watersheds. Article in Journal/Newspaper Annals of Glaciology Directory of Open Access Journals: DOAJ Articles British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Canada Annals of Glaciology 58 75pt1 1 10 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
accumulation snow snow/ice surface processes surface mass budget Meteorology. Climatology QC851-999 |
spellingShingle |
accumulation snow snow/ice surface processes surface mass budget Meteorology. Climatology QC851-999 Waqar Younas Rachel W. Hay Matt K. MacDonald Siraj ul Islam Stephen J. Déry A strategy to represent impacts of subgrid-scale topography on snow evolution in the Canadian Land Surface Scheme |
topic_facet |
accumulation snow snow/ice surface processes surface mass budget Meteorology. Climatology QC851-999 |
description |
This sensitivity study applies the offline Canadian Land Surface Scheme (CLASS) version 3.6 to simulate snowpack evolution in idealized topography using observations at Likely, British Columbia, Canada over 1 July 2008 to 30 June 2009. A strategy for a subgrid-scale snow (SSS) parameterization is developed to incorporate two key features: ten elevation bands at 100 m intervals to capture air temperature lapse rates, and five slope angles on four aspects to resolve solar radiation impacts on the evolution of snow depth and SWE. Simulations reveal strong elevational dependencies of snow depth and SWE when adjusting temperatures using a moist adiabatic lapse rate with elevation, with 26% peak SWE differences between that at the average elevation versus the mean of the remainder of the elevation bands. Differences in peak SWE on north- and south-facing slopes increase from 3.0 mm at 10° slope to 17.9 mm at 50° slope. When applied to elevation, slope and aspect combinations derived from a high-resolution digital elevation model, elevation dominates the control of peak SWE values. Inclusion of the range of SSS effects into a regional climate model will improve snowpack and hydrological simulations of western North America's snow-dominated, mountainous watersheds. |
format |
Article in Journal/Newspaper |
author |
Waqar Younas Rachel W. Hay Matt K. MacDonald Siraj ul Islam Stephen J. Déry |
author_facet |
Waqar Younas Rachel W. Hay Matt K. MacDonald Siraj ul Islam Stephen J. Déry |
author_sort |
Waqar Younas |
title |
A strategy to represent impacts of subgrid-scale topography on snow evolution in the Canadian Land Surface Scheme |
title_short |
A strategy to represent impacts of subgrid-scale topography on snow evolution in the Canadian Land Surface Scheme |
title_full |
A strategy to represent impacts of subgrid-scale topography on snow evolution in the Canadian Land Surface Scheme |
title_fullStr |
A strategy to represent impacts of subgrid-scale topography on snow evolution in the Canadian Land Surface Scheme |
title_full_unstemmed |
A strategy to represent impacts of subgrid-scale topography on snow evolution in the Canadian Land Surface Scheme |
title_sort |
strategy to represent impacts of subgrid-scale topography on snow evolution in the canadian land surface scheme |
publisher |
Cambridge University Press |
publishDate |
2017 |
url |
https://doi.org/10.1017/aog.2017.29 https://doaj.org/article/bb091a0b51244f22825de1b095424665 |
long_lat |
ENVELOPE(-125.003,-125.003,54.000,54.000) |
geographic |
British Columbia Canada |
geographic_facet |
British Columbia Canada |
genre |
Annals of Glaciology |
genre_facet |
Annals of Glaciology |
op_source |
Annals of Glaciology, Vol 58, Pp 1-10 (2017) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0260305517000295/type/journal_article https://doaj.org/toc/0260-3055 https://doaj.org/toc/1727-5644 doi:10.1017/aog.2017.29 0260-3055 1727-5644 https://doaj.org/article/bb091a0b51244f22825de1b095424665 |
op_doi |
https://doi.org/10.1017/aog.2017.29 |
container_title |
Annals of Glaciology |
container_volume |
58 |
container_issue |
75pt1 |
container_start_page |
1 |
op_container_end_page |
10 |
_version_ |
1766001174560899072 |