Characteristics of the South China Sea Monsoon from the Onset to Withdrawal before and after 1993/94
The characteristics and possible impact factors of the South China Sea summer monsoon (SCSSM) evolution from onset to withdrawal before and after 1993/94 are investigated using ERA-Interim, CPC rainfall, and OLR data. During the late-onset period of 1979–1993, the SCSSM was characterized by stronger...
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Wiley
2020-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2020/8820460 |
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| author | Zhao Xiaofang Wang Lijuan |
| author_facet | Zhao Xiaofang Wang Lijuan |
| author_sort | Zhao Xiaofang |
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| description | The characteristics and possible impact factors of the South China Sea summer monsoon (SCSSM) evolution from onset to withdrawal before and after 1993/94 are investigated using ERA-Interim, CPC rainfall, and OLR data. During the late-onset period of 1979–1993, the SCSSM was characterized by stronger onset intensity and a gradual withdrawal, resulting in a continuous, strong preflood season in Southern China and a slower rain-belt retreat from north to south China in September. In addition, the rain-belt in the Yangtze River basin persisted much longer during summer. However, during the early-onset period in 1994–2016, the SCSSM is associated with a weaker onset intensity and comparatively faster retreat. The advanced preflood season lasted intermittently throughout May and the whole eastern China precipitation lasted until October when it retreated rapidly, making the rain-belt in Southern China persist for an extended duration. Further analysis indicates that a strong modulation of SCS intraseasonal oscillation (ISO) on the SCSSM evolution is observed. There are two active low-frequency oscillations over the SCS in summer during the late-onset period but three during the early-onset period. The wet ISO in the Northwest Pacific propagating northwestward into the SCS and enhanced SCSSM ISO activity may contribute to the early onset and faster withdrawal after 1993/94. The effect of warm western Pacific sea surface temperatures (SST) on the SCSSM evolution is also discussed. |
| format | Article |
| id | doaj-art-2f9668d3e28f495fbbe29be4aa56ad77 |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
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| series | Advances in Meteorology |
| spelling | doaj-art-2f9668d3e28f495fbbe29be4aa56ad772025-02-03T01:27:55ZengWileyAdvances in Meteorology1687-93091687-93172020-01-01202010.1155/2020/88204608820460Characteristics of the South China Sea Monsoon from the Onset to Withdrawal before and after 1993/94Zhao Xiaofang0Wang Lijuan1Key Laboratory of Meteorological Disaster, Ministry Education, Joint International Research Laboratory of Climate and Environment Change, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing 210044, ChinaKey Laboratory of Meteorological Disaster, Ministry Education, Joint International Research Laboratory of Climate and Environment Change, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing 210044, ChinaThe characteristics and possible impact factors of the South China Sea summer monsoon (SCSSM) evolution from onset to withdrawal before and after 1993/94 are investigated using ERA-Interim, CPC rainfall, and OLR data. During the late-onset period of 1979–1993, the SCSSM was characterized by stronger onset intensity and a gradual withdrawal, resulting in a continuous, strong preflood season in Southern China and a slower rain-belt retreat from north to south China in September. In addition, the rain-belt in the Yangtze River basin persisted much longer during summer. However, during the early-onset period in 1994–2016, the SCSSM is associated with a weaker onset intensity and comparatively faster retreat. The advanced preflood season lasted intermittently throughout May and the whole eastern China precipitation lasted until October when it retreated rapidly, making the rain-belt in Southern China persist for an extended duration. Further analysis indicates that a strong modulation of SCS intraseasonal oscillation (ISO) on the SCSSM evolution is observed. There are two active low-frequency oscillations over the SCS in summer during the late-onset period but three during the early-onset period. The wet ISO in the Northwest Pacific propagating northwestward into the SCS and enhanced SCSSM ISO activity may contribute to the early onset and faster withdrawal after 1993/94. The effect of warm western Pacific sea surface temperatures (SST) on the SCSSM evolution is also discussed.http://dx.doi.org/10.1155/2020/8820460 |
| spellingShingle | Zhao Xiaofang Wang Lijuan Characteristics of the South China Sea Monsoon from the Onset to Withdrawal before and after 1993/94 Advances in Meteorology |
| title | Characteristics of the South China Sea Monsoon from the Onset to Withdrawal before and after 1993/94 |
| title_full | Characteristics of the South China Sea Monsoon from the Onset to Withdrawal before and after 1993/94 |
| title_fullStr | Characteristics of the South China Sea Monsoon from the Onset to Withdrawal before and after 1993/94 |
| title_full_unstemmed | Characteristics of the South China Sea Monsoon from the Onset to Withdrawal before and after 1993/94 |
| title_short | Characteristics of the South China Sea Monsoon from the Onset to Withdrawal before and after 1993/94 |
| title_sort | characteristics of the south china sea monsoon from the onset to withdrawal before and after 1993 94 |
| url | http://dx.doi.org/10.1155/2020/8820460 |
| work_keys_str_mv | AT zhaoxiaofang characteristicsofthesouthchinaseamonsoonfromtheonsettowithdrawalbeforeandafter199394 AT wanglijuan characteristicsofthesouthchinaseamonsoonfromtheonsettowithdrawalbeforeandafter199394 |