Snow–precipitation coupling and related atmospheric feedbacks over North America
Understanding snow–precipitation coupling mechanisms is of great importance both from theoretical and operational considerations. Here, carefully designed climate model experiments, with and without interactive snow, are conducted to study snow–precipitation coupling mechanisms over North America. C...
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crwiley:10.1002/asl.831 2024-06-02T08:11:22+00:00 Snow–precipitation coupling and related atmospheric feedbacks over North America Diro, Gulilat Tefera Sushama, Laxmi Natural Sciences and Engineering Research Council of Canada 2018 http://dx.doi.org/10.1002/asl.831 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fasl.831 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/asl.831 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Atmospheric Science Letters volume 19, issue 8 ISSN 1530-261X 1530-261X journal-article 2018 crwiley https://doi.org/10.1002/asl.831 2024-05-03T11:06:57Z Understanding snow–precipitation coupling mechanisms is of great importance both from theoretical and operational considerations. Here, carefully designed climate model experiments, with and without interactive snow, are conducted to study snow–precipitation coupling mechanisms over North America. Coupling hotspots are identified over southern Canada during December and over the central United States during January. The hotspot over southern Canada involves a positive snow–atmosphere feedback mechanism, whereby snow modifies the large‐scale atmospheric features, which resembles the positive phase of North Atlantic Oscillation. This favors storm activity and enhanced snow over the region. The coupling over the central United States during January, on the other hand, is tied to the albedo effect of snow, which leads to cooling of the lower atmosphere, which in turn determines the precipitation phase, favoring snow formation over rain. The results from this study, in general, are informative for sub‐seasonal to seasonal prediction of winter precipitation for the studied regions. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Wiley Online Library Canada Atmospheric Science Letters 19 8 |
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English |
description |
Understanding snow–precipitation coupling mechanisms is of great importance both from theoretical and operational considerations. Here, carefully designed climate model experiments, with and without interactive snow, are conducted to study snow–precipitation coupling mechanisms over North America. Coupling hotspots are identified over southern Canada during December and over the central United States during January. The hotspot over southern Canada involves a positive snow–atmosphere feedback mechanism, whereby snow modifies the large‐scale atmospheric features, which resembles the positive phase of North Atlantic Oscillation. This favors storm activity and enhanced snow over the region. The coupling over the central United States during January, on the other hand, is tied to the albedo effect of snow, which leads to cooling of the lower atmosphere, which in turn determines the precipitation phase, favoring snow formation over rain. The results from this study, in general, are informative for sub‐seasonal to seasonal prediction of winter precipitation for the studied regions. |
author2 |
Natural Sciences and Engineering Research Council of Canada |
format |
Article in Journal/Newspaper |
author |
Diro, Gulilat Tefera Sushama, Laxmi |
spellingShingle |
Diro, Gulilat Tefera Sushama, Laxmi Snow–precipitation coupling and related atmospheric feedbacks over North America |
author_facet |
Diro, Gulilat Tefera Sushama, Laxmi |
author_sort |
Diro, Gulilat Tefera |
title |
Snow–precipitation coupling and related atmospheric feedbacks over North America |
title_short |
Snow–precipitation coupling and related atmospheric feedbacks over North America |
title_full |
Snow–precipitation coupling and related atmospheric feedbacks over North America |
title_fullStr |
Snow–precipitation coupling and related atmospheric feedbacks over North America |
title_full_unstemmed |
Snow–precipitation coupling and related atmospheric feedbacks over North America |
title_sort |
snow–precipitation coupling and related atmospheric feedbacks over north america |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1002/asl.831 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fasl.831 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/asl.831 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Atmospheric Science Letters volume 19, issue 8 ISSN 1530-261X 1530-261X |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/asl.831 |
container_title |
Atmospheric Science Letters |
container_volume |
19 |
container_issue |
8 |
_version_ |
1800757478235832320 |