Comparison of East Asian winter monsoon indices
International audience Four East Asian winter monsoon (EAWM) indices are compared in this paper. In the research periods, all the indices show similar interannual and decadal-interdecadal variations, with predominant periods centering in 3?4 years, 6.5 years and 9?15 years, respectively. Besides, al...
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ftccsdartic:oai:HAL:hal-00296976v1 2023-05-15T13:14:58+02:00 Comparison of East Asian winter monsoon indices Hui, Gao Laboratory for Climate Studies Beijing Climate Centre (BCC) China Meteorological Administration (CMA)-China Meteorological Administration (CMA) 2007-04-26 https://hal.archives-ouvertes.fr/hal-00296976 https://hal.archives-ouvertes.fr/hal-00296976/document https://hal.archives-ouvertes.fr/hal-00296976/file/adgeo-10-31-2007.pdf en eng HAL CCSD European Geosciences Union hal-00296976 https://hal.archives-ouvertes.fr/hal-00296976 https://hal.archives-ouvertes.fr/hal-00296976/document https://hal.archives-ouvertes.fr/hal-00296976/file/adgeo-10-31-2007.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7340 EISSN: 1680-7359 Advances in Geosciences https://hal.archives-ouvertes.fr/hal-00296976 Advances in Geosciences, European Geosciences Union, 2007, 10, pp.31-37 [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2007 ftccsdartic 2021-01-24T00:24:10Z International audience Four East Asian winter monsoon (EAWM) indices are compared in this paper. In the research periods, all the indices show similar interannual and decadal-interdecadal variations, with predominant periods centering in 3?4 years, 6.5 years and 9?15 years, respectively. Besides, all the indices show remarkable weakening trends since the 1980s. The correlation coefficient of each two indices is positive with a significance level of 99%. Both the correlation analyses and the composites indicate that in stronger EAWM years, the Siberian high and the higher-level subtropical westerly jet are stronger, and the Aleutian low and the East Asia trough are deeper. This circulation pattern is favorable for much stronger northwesterly wind and lower air temperature in the subtropical regions of East Asia, while it is on the opposite in weaker EAWM years. Besides, EAWM can also exert a remarkable leading effect on the summer monsoon. After stronger (weaker) EAWM, less (more) summer precipitation is seen over the regions from the Yangtze River valley of China to southern Japan, while more (less) from South China Sea to the tropical western Pacific. Article in Journal/Newspaper aleutian low Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Pacific |
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Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences Hui, Gao Comparison of East Asian winter monsoon indices |
topic_facet |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience Four East Asian winter monsoon (EAWM) indices are compared in this paper. In the research periods, all the indices show similar interannual and decadal-interdecadal variations, with predominant periods centering in 3?4 years, 6.5 years and 9?15 years, respectively. Besides, all the indices show remarkable weakening trends since the 1980s. The correlation coefficient of each two indices is positive with a significance level of 99%. Both the correlation analyses and the composites indicate that in stronger EAWM years, the Siberian high and the higher-level subtropical westerly jet are stronger, and the Aleutian low and the East Asia trough are deeper. This circulation pattern is favorable for much stronger northwesterly wind and lower air temperature in the subtropical regions of East Asia, while it is on the opposite in weaker EAWM years. Besides, EAWM can also exert a remarkable leading effect on the summer monsoon. After stronger (weaker) EAWM, less (more) summer precipitation is seen over the regions from the Yangtze River valley of China to southern Japan, while more (less) from South China Sea to the tropical western Pacific. |
author2 |
Laboratory for Climate Studies Beijing Climate Centre (BCC) China Meteorological Administration (CMA)-China Meteorological Administration (CMA) |
format |
Article in Journal/Newspaper |
author |
Hui, Gao |
author_facet |
Hui, Gao |
author_sort |
Hui, Gao |
title |
Comparison of East Asian winter monsoon indices |
title_short |
Comparison of East Asian winter monsoon indices |
title_full |
Comparison of East Asian winter monsoon indices |
title_fullStr |
Comparison of East Asian winter monsoon indices |
title_full_unstemmed |
Comparison of East Asian winter monsoon indices |
title_sort |
comparison of east asian winter monsoon indices |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.archives-ouvertes.fr/hal-00296976 https://hal.archives-ouvertes.fr/hal-00296976/document https://hal.archives-ouvertes.fr/hal-00296976/file/adgeo-10-31-2007.pdf |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
aleutian low |
genre_facet |
aleutian low |
op_source |
ISSN: 1680-7340 EISSN: 1680-7359 Advances in Geosciences https://hal.archives-ouvertes.fr/hal-00296976 Advances in Geosciences, European Geosciences Union, 2007, 10, pp.31-37 |
op_relation |
hal-00296976 https://hal.archives-ouvertes.fr/hal-00296976 https://hal.archives-ouvertes.fr/hal-00296976/document https://hal.archives-ouvertes.fr/hal-00296976/file/adgeo-10-31-2007.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766266296215797760 |