Processes of intraseasonal snow cover variations over the eastern China during boreal winter
Abstract This study reveals that the dominant time scale of intraseasonal snow cover variation over the eastern China is within 30 days by using the latest satellite snow cover data from the moderate resolution imaging spectroradiometer (MODIS)/Terra product. The leading empirical orthogonal functio...
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crwiley:10.1002/asl.901 2024-06-02T08:02:13+00:00 Processes of intraseasonal snow cover variations over the eastern China during boreal winter Song, Lei Wu, Renguang Zhu, Jialei National Natural Science Foundation of China 2019 http://dx.doi.org/10.1002/asl.901 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fasl.901 https://onlinelibrary.wiley.com/doi/pdf/10.1002/asl.901 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/asl.901 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/asl.901 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Atmospheric Science Letters volume 20, issue 5 ISSN 1530-261X 1530-261X journal-article 2019 crwiley https://doi.org/10.1002/asl.901 2024-05-03T10:44:59Z Abstract This study reveals that the dominant time scale of intraseasonal snow cover variation over the eastern China is within 30 days by using the latest satellite snow cover data from the moderate resolution imaging spectroradiometer (MODIS)/Terra product. The leading empirical orthogonal function (EOF) mode of 10–30‐day snow cover variation during boreal winter from 2004 to 2018 over the eastern China has two centers: northwest part of the eastern China and north of the Yangtze River. Composite analysis based on 25 snow events identified from normalized leading principal time series (PC1) indicates that the southeastward intrusion of surface anticyclonic anomalies and accompanying low temperature anomalies provide the temperature condition for snow events. Negative Arctic Oscillation induces mid‐latitude wave train and leads to the development of surface anticyclonic anomalies and upper‐level cyclonic anomalies over East Asia. The cyclonic anomalies induce ascending motion and anomalous convergence of water vapor fluxes over the eastern China, which supplies moisture for snowfall. Article in Journal/Newspaper Arctic Wiley Online Library Arctic Atmospheric Science Letters 20 5 |
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Wiley Online Library |
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English |
description |
Abstract This study reveals that the dominant time scale of intraseasonal snow cover variation over the eastern China is within 30 days by using the latest satellite snow cover data from the moderate resolution imaging spectroradiometer (MODIS)/Terra product. The leading empirical orthogonal function (EOF) mode of 10–30‐day snow cover variation during boreal winter from 2004 to 2018 over the eastern China has two centers: northwest part of the eastern China and north of the Yangtze River. Composite analysis based on 25 snow events identified from normalized leading principal time series (PC1) indicates that the southeastward intrusion of surface anticyclonic anomalies and accompanying low temperature anomalies provide the temperature condition for snow events. Negative Arctic Oscillation induces mid‐latitude wave train and leads to the development of surface anticyclonic anomalies and upper‐level cyclonic anomalies over East Asia. The cyclonic anomalies induce ascending motion and anomalous convergence of water vapor fluxes over the eastern China, which supplies moisture for snowfall. |
author2 |
National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Song, Lei Wu, Renguang Zhu, Jialei |
spellingShingle |
Song, Lei Wu, Renguang Zhu, Jialei Processes of intraseasonal snow cover variations over the eastern China during boreal winter |
author_facet |
Song, Lei Wu, Renguang Zhu, Jialei |
author_sort |
Song, Lei |
title |
Processes of intraseasonal snow cover variations over the eastern China during boreal winter |
title_short |
Processes of intraseasonal snow cover variations over the eastern China during boreal winter |
title_full |
Processes of intraseasonal snow cover variations over the eastern China during boreal winter |
title_fullStr |
Processes of intraseasonal snow cover variations over the eastern China during boreal winter |
title_full_unstemmed |
Processes of intraseasonal snow cover variations over the eastern China during boreal winter |
title_sort |
processes of intraseasonal snow cover variations over the eastern china during boreal winter |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1002/asl.901 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fasl.901 https://onlinelibrary.wiley.com/doi/pdf/10.1002/asl.901 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/asl.901 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/asl.901 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Atmospheric Science Letters volume 20, issue 5 ISSN 1530-261X 1530-261X |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/asl.901 |
container_title |
Atmospheric Science Letters |
container_volume |
20 |
container_issue |
5 |
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1800746713905889280 |