Winter snow anomaly and atmospheric circulation in Mongolia
Abstract An observational study was conducted of winter snow anomaly in Mongolia and the associated atmospheric circulation. Monthly data of snow depth and temperature at 23 Mongolian stations from 1940 to 1992 were used for a statistical analysis. The Mongolian snow amount is fairly large in the no...
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crwiley:10.1002/joc.961 2024-09-15T18:23:45+00:00 Winter snow anomaly and atmospheric circulation in Mongolia Morinaga, Yuki Tian, Shao‐Fen Shinoda, Masato 2003 http://dx.doi.org/10.1002/joc.961 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.961 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.961 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 23, issue 13, page 1627-1636 ISSN 0899-8418 1097-0088 journal-article 2003 crwiley https://doi.org/10.1002/joc.961 2024-07-04T04:28:50Z Abstract An observational study was conducted of winter snow anomaly in Mongolia and the associated atmospheric circulation. Monthly data of snow depth and temperature at 23 Mongolian stations from 1940 to 1992 were used for a statistical analysis. The Mongolian snow amount is fairly large in the northern mountainous regions and decreases to the south. On average, there is a substantial seasonal increase in snow depth during November and December. The deepest snow occurs in January, with an average depth of 3.4 cm averaged for all 23 stations. The correlation coefficients for November and December between the snow depth and temperature are significant and negative over wide areas. A principal component analysis was applied to interannual anomalies of January snow depth. The first mode (PC1) reveals widespread loadings of the same sign, and the second mode (PC2) shows a northeast–southwest dipole pattern. A correlation analysis was employed to examine relationships between PC1, PC2 and the preceding atmospheric circulation modes derived from a principal component analysis of the Northern Hemisphere 500 hPa geopotential heights. The PC1 time series for January is highly correlated with the North Atlantic oscillation for November, and the PC2 time series is significantly correlated with the Eurasian pattern for December. These relationships will provide a potential basis for long‐range forecasts of mid‐winter anomalous snow that leads to a significant loss of livestock (so‐called white dzud ) in Mongolia. Copyright © 2003 Royal Meteorological Society Article in Journal/Newspaper North Atlantic North Atlantic oscillation Wiley Online Library International Journal of Climatology 23 13 1627 1636 |
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Wiley Online Library |
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English |
description |
Abstract An observational study was conducted of winter snow anomaly in Mongolia and the associated atmospheric circulation. Monthly data of snow depth and temperature at 23 Mongolian stations from 1940 to 1992 were used for a statistical analysis. The Mongolian snow amount is fairly large in the northern mountainous regions and decreases to the south. On average, there is a substantial seasonal increase in snow depth during November and December. The deepest snow occurs in January, with an average depth of 3.4 cm averaged for all 23 stations. The correlation coefficients for November and December between the snow depth and temperature are significant and negative over wide areas. A principal component analysis was applied to interannual anomalies of January snow depth. The first mode (PC1) reveals widespread loadings of the same sign, and the second mode (PC2) shows a northeast–southwest dipole pattern. A correlation analysis was employed to examine relationships between PC1, PC2 and the preceding atmospheric circulation modes derived from a principal component analysis of the Northern Hemisphere 500 hPa geopotential heights. The PC1 time series for January is highly correlated with the North Atlantic oscillation for November, and the PC2 time series is significantly correlated with the Eurasian pattern for December. These relationships will provide a potential basis for long‐range forecasts of mid‐winter anomalous snow that leads to a significant loss of livestock (so‐called white dzud ) in Mongolia. Copyright © 2003 Royal Meteorological Society |
format |
Article in Journal/Newspaper |
author |
Morinaga, Yuki Tian, Shao‐Fen Shinoda, Masato |
spellingShingle |
Morinaga, Yuki Tian, Shao‐Fen Shinoda, Masato Winter snow anomaly and atmospheric circulation in Mongolia |
author_facet |
Morinaga, Yuki Tian, Shao‐Fen Shinoda, Masato |
author_sort |
Morinaga, Yuki |
title |
Winter snow anomaly and atmospheric circulation in Mongolia |
title_short |
Winter snow anomaly and atmospheric circulation in Mongolia |
title_full |
Winter snow anomaly and atmospheric circulation in Mongolia |
title_fullStr |
Winter snow anomaly and atmospheric circulation in Mongolia |
title_full_unstemmed |
Winter snow anomaly and atmospheric circulation in Mongolia |
title_sort |
winter snow anomaly and atmospheric circulation in mongolia |
publisher |
Wiley |
publishDate |
2003 |
url |
http://dx.doi.org/10.1002/joc.961 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.961 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.961 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
International Journal of Climatology volume 23, issue 13, page 1627-1636 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.961 |
container_title |
International Journal of Climatology |
container_volume |
23 |
container_issue |
13 |
container_start_page |
1627 |
op_container_end_page |
1636 |
_version_ |
1810464009341632512 |