Recent changes in summer precipitation in Northeast China and the background circulation
ABSTRACT This study documents recent changes in the characteristics of summer (July–August–September) precipitation in Northeast China ( NEC ). A significant shift to less precipitation occurred in 1999–2012 as compared with that in 1984–1998. The reduced precipitation in the later period is closely...
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crwiley:10.1002/joc.4280 2023-12-03T10:18:07+01:00 Recent changes in summer precipitation in Northeast China and the background circulation Han, Tingting Chen, Huopo Wang, Huijun National Natural Science Foundation of China 2015 http://dx.doi.org/10.1002/joc.4280 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.4280 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.4280 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 35, issue 14, page 4210-4219 ISSN 0899-8418 1097-0088 Atmospheric Science journal-article 2015 crwiley https://doi.org/10.1002/joc.4280 2023-11-09T14:07:25Z ABSTRACT This study documents recent changes in the characteristics of summer (July–August–September) precipitation in Northeast China ( NEC ). A significant shift to less precipitation occurred in 1999–2012 as compared with that in 1984–1998. The reduced precipitation in the later period is closely associated with the large‐scale anomalous high pressure over East Asia and anomalous descending motion over NEC . Furthermore, the significant reductions in the total cloud cover and moisture content also contribute to the reduced precipitation over NEC . To investigate the possible mechanism for the decadal shift of summer precipitation, a northeast Asian summer monsoon ( NEASM ) index is defined to describe the monsoon circulation over NEC . The results indicate that the NEASM has weakened since 1999 and is concurrent with the shift of the Pacific Decadal Oscillation ( PDO ) to the negative phase. Warming sea surface temperature ( SST ) in the North Pacific can zonally reduce the land‐sea thermal contrast and lead to a weak NEASM . Further investigation indicates that the negative phase of the PDO has significant impacts on the atmospheric circulation associated with the NEASM . Additionally, changes in synchronous Arctic sea ice cover ( SIC ) also likely induce an anomalous sinking movement and weaken water vapour transport; thus, the summer precipitation over NEC decreases. Article in Journal/Newspaper Arctic Sea ice Wiley Online Library (via Crossref) Arctic Pacific International Journal of Climatology 35 14 4210 4219 |
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Wiley Online Library (via Crossref) |
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language |
English |
topic |
Atmospheric Science |
spellingShingle |
Atmospheric Science Han, Tingting Chen, Huopo Wang, Huijun Recent changes in summer precipitation in Northeast China and the background circulation |
topic_facet |
Atmospheric Science |
description |
ABSTRACT This study documents recent changes in the characteristics of summer (July–August–September) precipitation in Northeast China ( NEC ). A significant shift to less precipitation occurred in 1999–2012 as compared with that in 1984–1998. The reduced precipitation in the later period is closely associated with the large‐scale anomalous high pressure over East Asia and anomalous descending motion over NEC . Furthermore, the significant reductions in the total cloud cover and moisture content also contribute to the reduced precipitation over NEC . To investigate the possible mechanism for the decadal shift of summer precipitation, a northeast Asian summer monsoon ( NEASM ) index is defined to describe the monsoon circulation over NEC . The results indicate that the NEASM has weakened since 1999 and is concurrent with the shift of the Pacific Decadal Oscillation ( PDO ) to the negative phase. Warming sea surface temperature ( SST ) in the North Pacific can zonally reduce the land‐sea thermal contrast and lead to a weak NEASM . Further investigation indicates that the negative phase of the PDO has significant impacts on the atmospheric circulation associated with the NEASM . Additionally, changes in synchronous Arctic sea ice cover ( SIC ) also likely induce an anomalous sinking movement and weaken water vapour transport; thus, the summer precipitation over NEC decreases. |
author2 |
National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Han, Tingting Chen, Huopo Wang, Huijun |
author_facet |
Han, Tingting Chen, Huopo Wang, Huijun |
author_sort |
Han, Tingting |
title |
Recent changes in summer precipitation in Northeast China and the background circulation |
title_short |
Recent changes in summer precipitation in Northeast China and the background circulation |
title_full |
Recent changes in summer precipitation in Northeast China and the background circulation |
title_fullStr |
Recent changes in summer precipitation in Northeast China and the background circulation |
title_full_unstemmed |
Recent changes in summer precipitation in Northeast China and the background circulation |
title_sort |
recent changes in summer precipitation in northeast china and the background circulation |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1002/joc.4280 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.4280 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.4280 |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
International Journal of Climatology volume 35, issue 14, page 4210-4219 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.4280 |
container_title |
International Journal of Climatology |
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35 |
container_issue |
14 |
container_start_page |
4210 |
op_container_end_page |
4219 |
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1784265092956684288 |