Quantifying the impact of synoptic weather types and patterns on energy fluxes of a marginal snowpack
Synoptic weather patterns are investigated for their impact on energy fluxes driving melt of a marginal snowpack in the Snowy Mountains, southeast Australia. K-means clustering applied to ECMWF ERA-Interim data identified common synoptic types and patterns that were then associated with in situ snow...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00052948 2023-05-15T18:32:33+02:00 Quantifying the impact of synoptic weather types and patterns on energy fluxes of a marginal snowpack Schwartz, Andrew J. McGowan, Hamish A. Theobald, Alison Callow, Nik 2020-08 electronic https://doi.org/10.5194/tc-14-2755-2020 https://noa.gwlb.de/receive/cop_mods_00052948 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00052601/tc-14-2755-2020.pdf https://tc.copernicus.org/articles/14/2755/2020/tc-14-2755-2020.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-14-2755-2020 https://noa.gwlb.de/receive/cop_mods_00052948 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00052601/tc-14-2755-2020.pdf https://tc.copernicus.org/articles/14/2755/2020/tc-14-2755-2020.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2020 ftnonlinearchiv https://doi.org/10.5194/tc-14-2755-2020 2022-02-08T22:35:43Z Synoptic weather patterns are investigated for their impact on energy fluxes driving melt of a marginal snowpack in the Snowy Mountains, southeast Australia. K-means clustering applied to ECMWF ERA-Interim data identified common synoptic types and patterns that were then associated with in situ snowpack energy flux measurements. The analysis showed that the largest contribution of energy to the snowpack occurred immediately prior to the passage of cold fronts through increased sensible heat flux as a result of warm air advection (WAA) ahead of the front. Shortwave radiation was found to be the dominant control on positive energy fluxes when individual synoptic weather types were examined. As a result, cloud cover related to each synoptic type was shown to be highly influential on the energy fluxes to the snowpack through its reduction of shortwave radiation and reflection/emission of longwave fluxes. As single-site energy balance measurements of the snowpack were used for this study, caution should be exercised before applying the results to the broader Australian Alps region. However, this research is an important step towards understanding changes in surface energy flux as a result of shifts to the global atmospheric circulation as anthropogenic climate change continues to impact marginal winter snowpacks. Article in Journal/Newspaper The Cryosphere Niedersächsisches Online-Archiv NOA The Cryosphere 14 8 2755 2774 |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Schwartz, Andrew J. McGowan, Hamish A. Theobald, Alison Callow, Nik Quantifying the impact of synoptic weather types and patterns on energy fluxes of a marginal snowpack |
topic_facet |
article Verlagsveröffentlichung |
description |
Synoptic weather patterns are investigated for their impact on energy fluxes driving melt of a marginal snowpack in the Snowy Mountains, southeast Australia. K-means clustering applied to ECMWF ERA-Interim data identified common synoptic types and patterns that were then associated with in situ snowpack energy flux measurements. The analysis showed that the largest contribution of energy to the snowpack occurred immediately prior to the passage of cold fronts through increased sensible heat flux as a result of warm air advection (WAA) ahead of the front. Shortwave radiation was found to be the dominant control on positive energy fluxes when individual synoptic weather types were examined. As a result, cloud cover related to each synoptic type was shown to be highly influential on the energy fluxes to the snowpack through its reduction of shortwave radiation and reflection/emission of longwave fluxes. As single-site energy balance measurements of the snowpack were used for this study, caution should be exercised before applying the results to the broader Australian Alps region. However, this research is an important step towards understanding changes in surface energy flux as a result of shifts to the global atmospheric circulation as anthropogenic climate change continues to impact marginal winter snowpacks. |
format |
Article in Journal/Newspaper |
author |
Schwartz, Andrew J. McGowan, Hamish A. Theobald, Alison Callow, Nik |
author_facet |
Schwartz, Andrew J. McGowan, Hamish A. Theobald, Alison Callow, Nik |
author_sort |
Schwartz, Andrew J. |
title |
Quantifying the impact of synoptic weather types and patterns on energy fluxes of a marginal snowpack |
title_short |
Quantifying the impact of synoptic weather types and patterns on energy fluxes of a marginal snowpack |
title_full |
Quantifying the impact of synoptic weather types and patterns on energy fluxes of a marginal snowpack |
title_fullStr |
Quantifying the impact of synoptic weather types and patterns on energy fluxes of a marginal snowpack |
title_full_unstemmed |
Quantifying the impact of synoptic weather types and patterns on energy fluxes of a marginal snowpack |
title_sort |
quantifying the impact of synoptic weather types and patterns on energy fluxes of a marginal snowpack |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/tc-14-2755-2020 https://noa.gwlb.de/receive/cop_mods_00052948 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00052601/tc-14-2755-2020.pdf https://tc.copernicus.org/articles/14/2755/2020/tc-14-2755-2020.pdf |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-14-2755-2020 https://noa.gwlb.de/receive/cop_mods_00052948 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00052601/tc-14-2755-2020.pdf https://tc.copernicus.org/articles/14/2755/2020/tc-14-2755-2020.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-14-2755-2020 |
container_title |
The Cryosphere |
container_volume |
14 |
container_issue |
8 |
container_start_page |
2755 |
op_container_end_page |
2774 |
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1766216742534643712 |