The influence of albedo parameterization for improved lake ice simulation
Lake ice models can be used to study the latitudinal differences of current and projected changes in ice covered lakes under a changing climate. The Canadian Lake Ice Model (CLIMo) is a one-dimensional freshwater ice cover model that simulates Arctic and sub-Arctic lake ice cover well. Modelling ice...
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ftcopernicus:oai:publications.copernicus.org:hessd84935 2023-05-15T13:10:35+02:00 The influence of albedo parameterization for improved lake ice simulation Robinson, Alexis L. Ariano, Sarah S. Brown, Laura C. 2020-04-27 application/pdf https://doi.org/10.5194/hess-2020-156 https://www.hydrol-earth-syst-sci-discuss.net/hess-2020-156/ eng eng doi:10.5194/hess-2020-156 https://www.hydrol-earth-syst-sci-discuss.net/hess-2020-156/ eISSN: 1607-7938 Text 2020 ftcopernicus https://doi.org/10.5194/hess-2020-156 2020-05-04T14:42:01Z Lake ice models can be used to study the latitudinal differences of current and projected changes in ice covered lakes under a changing climate. The Canadian Lake Ice Model (CLIMo) is a one-dimensional freshwater ice cover model that simulates Arctic and sub-Arctic lake ice cover well. Modelling ice cover in temperate regions has presented challenges due to the differences in composition between northern and temperate ice. This study presents a comparison of measured and modelled ice regimes, with a focus on refining CLIMo for temperate regions. The study sites include two temperate region lakes (MacDonald Lake and Clear Lake, Central Ontario) and two High Arctic lakes (Resolute Lake and Small Lake, Nunavut) where climate and ice cover information have been recorded over three seasons. The ice cover simulations were validated with a combination of time lapse imagery, field measurements of snow depth, snow density, ice thickness and albedo data, and historical ice records from the Canadian Ice Database (for Resolute Lake). Simulations of the High Arctic ice cover show good agreement with previous studies for ice-on and ice-off dates (MAE 6 to 8 days). Unadjusted simulations for the temperate region lakes show both an underestimation in ice thickness (~ 4 to 18 cm) and ice-off timing (~ 25 to 30 days). Field measurements were used to adjust the albedo parameterization used in CLIMo, which resulted in improvements to both simulated ice thickness, within 0.1 cm to 10 cm of manual measurements, and ice-off timing, within 1 to 7 days of observations. These findings suggest regionally specific measurements of albedo can improve the accuracy of lake ice simulations. These results further our knowledge regarding of the response of temperate and High Arctic lake ice regimes to climate conditions. Text albedo Arctic Nunavut Copernicus Publications: E-Journals Arctic Arctic Lake ENVELOPE(-130.826,-130.826,57.231,57.231) Clear Lake ENVELOPE(-112.122,-112.122,57.734,57.734) MacDonald Lake ENVELOPE(-126.329,-126.329,54.011,54.011) Nunavut Resolute Lake ENVELOPE(-94.941,-94.941,74.688,74.688) |
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Open Polar |
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Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
Lake ice models can be used to study the latitudinal differences of current and projected changes in ice covered lakes under a changing climate. The Canadian Lake Ice Model (CLIMo) is a one-dimensional freshwater ice cover model that simulates Arctic and sub-Arctic lake ice cover well. Modelling ice cover in temperate regions has presented challenges due to the differences in composition between northern and temperate ice. This study presents a comparison of measured and modelled ice regimes, with a focus on refining CLIMo for temperate regions. The study sites include two temperate region lakes (MacDonald Lake and Clear Lake, Central Ontario) and two High Arctic lakes (Resolute Lake and Small Lake, Nunavut) where climate and ice cover information have been recorded over three seasons. The ice cover simulations were validated with a combination of time lapse imagery, field measurements of snow depth, snow density, ice thickness and albedo data, and historical ice records from the Canadian Ice Database (for Resolute Lake). Simulations of the High Arctic ice cover show good agreement with previous studies for ice-on and ice-off dates (MAE 6 to 8 days). Unadjusted simulations for the temperate region lakes show both an underestimation in ice thickness (~ 4 to 18 cm) and ice-off timing (~ 25 to 30 days). Field measurements were used to adjust the albedo parameterization used in CLIMo, which resulted in improvements to both simulated ice thickness, within 0.1 cm to 10 cm of manual measurements, and ice-off timing, within 1 to 7 days of observations. These findings suggest regionally specific measurements of albedo can improve the accuracy of lake ice simulations. These results further our knowledge regarding of the response of temperate and High Arctic lake ice regimes to climate conditions. |
format |
Text |
author |
Robinson, Alexis L. Ariano, Sarah S. Brown, Laura C. |
spellingShingle |
Robinson, Alexis L. Ariano, Sarah S. Brown, Laura C. The influence of albedo parameterization for improved lake ice simulation |
author_facet |
Robinson, Alexis L. Ariano, Sarah S. Brown, Laura C. |
author_sort |
Robinson, Alexis L. |
title |
The influence of albedo parameterization for improved lake ice simulation |
title_short |
The influence of albedo parameterization for improved lake ice simulation |
title_full |
The influence of albedo parameterization for improved lake ice simulation |
title_fullStr |
The influence of albedo parameterization for improved lake ice simulation |
title_full_unstemmed |
The influence of albedo parameterization for improved lake ice simulation |
title_sort |
influence of albedo parameterization for improved lake ice simulation |
publishDate |
2020 |
url |
https://doi.org/10.5194/hess-2020-156 https://www.hydrol-earth-syst-sci-discuss.net/hess-2020-156/ |
long_lat |
ENVELOPE(-130.826,-130.826,57.231,57.231) ENVELOPE(-112.122,-112.122,57.734,57.734) ENVELOPE(-126.329,-126.329,54.011,54.011) ENVELOPE(-94.941,-94.941,74.688,74.688) |
geographic |
Arctic Arctic Lake Clear Lake MacDonald Lake Nunavut Resolute Lake |
geographic_facet |
Arctic Arctic Lake Clear Lake MacDonald Lake Nunavut Resolute Lake |
genre |
albedo Arctic Nunavut |
genre_facet |
albedo Arctic Nunavut |
op_source |
eISSN: 1607-7938 |
op_relation |
doi:10.5194/hess-2020-156 https://www.hydrol-earth-syst-sci-discuss.net/hess-2020-156/ |
op_doi |
https://doi.org/10.5194/hess-2020-156 |
_version_ |
1766235085885931520 |