Tropical cyclones over the South China Sea suppress the monsoonal rainfall in southern China
Abstract The tropical cyclones (TCs) often cause intense rain and destructive winds. While these catastrophic weather conditions capture our attention, the less-known impact of TCs remains overlooked. This study reveals that TCs have a notable suppressive effect on monsoonal rainfall in southern Chi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2023-12-01
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| Series: | npj Climate and Atmospheric Science |
| Online Access: | https://doi.org/10.1038/s41612-023-00534-9 |
| _version_ | 1827581698410283008 |
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| author | Xinyu Li Riyu Lu Guixing Chen Ruidan Chen |
| author_facet | Xinyu Li Riyu Lu Guixing Chen Ruidan Chen |
| author_sort | Xinyu Li |
| collection | DOAJ |
| description | Abstract The tropical cyclones (TCs) often cause intense rain and destructive winds. While these catastrophic weather conditions capture our attention, the less-known impact of TCs remains overlooked. This study reveals that TCs have a notable suppressive effect on monsoonal rainfall in southern China when they traverse the South China Sea. This phenomenon can be attributed to the influence of these mesoscale disturbances on the quasi-stationary, large-scale monsoonal circulation, which alters the moisture pathway. Furthermore, the case-by-case analysis indicates that ~76% of TCs correspond to rainfall reduction, whereas the other 24% correspond to rainfall increase. The latter is due to the concurrent occurrence of another independent influencing factor: extratropical cyclonic anomalies that promote enhanced rainfall through favoring lower-tropospheric moisture convergence. This study suggests that TCs, as mesoscale disturbances, can change the moisture channel that is usually controlled by quasi-stationary and large-scale monsoonal airflows, and suppress the adjacent land rainfall over China. |
| first_indexed | 2024-03-08T22:40:08Z |
| format | Article |
| id | doaj.art-238c8a5929524b7c9158e551ade10aae |
| institution | Directory Open Access Journal |
| issn | 2397-3722 |
| language | English |
| last_indexed | 2024-03-08T22:40:08Z |
| publishDate | 2023-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Climate and Atmospheric Science |
| spelling | doaj.art-238c8a5929524b7c9158e551ade10aae2023-12-17T12:11:39ZengNature Portfolionpj Climate and Atmospheric Science2397-37222023-12-01611710.1038/s41612-023-00534-9Tropical cyclones over the South China Sea suppress the monsoonal rainfall in southern ChinaXinyu Li0Riyu Lu1Guixing Chen2Ruidan Chen3Key Laboratory of Marine Hazards Forecasting, Ministry of Natural Resources, Hohai UniversityState Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of SciencesSouthern Marine Science and Engineering Guangdong Laboratory (Zhuhai) and School of Atmospheric Sciences, Sun Yat-sen UniversitySouthern Marine Science and Engineering Guangdong Laboratory (Zhuhai) and School of Atmospheric Sciences, Sun Yat-sen UniversityAbstract The tropical cyclones (TCs) often cause intense rain and destructive winds. While these catastrophic weather conditions capture our attention, the less-known impact of TCs remains overlooked. This study reveals that TCs have a notable suppressive effect on monsoonal rainfall in southern China when they traverse the South China Sea. This phenomenon can be attributed to the influence of these mesoscale disturbances on the quasi-stationary, large-scale monsoonal circulation, which alters the moisture pathway. Furthermore, the case-by-case analysis indicates that ~76% of TCs correspond to rainfall reduction, whereas the other 24% correspond to rainfall increase. The latter is due to the concurrent occurrence of another independent influencing factor: extratropical cyclonic anomalies that promote enhanced rainfall through favoring lower-tropospheric moisture convergence. This study suggests that TCs, as mesoscale disturbances, can change the moisture channel that is usually controlled by quasi-stationary and large-scale monsoonal airflows, and suppress the adjacent land rainfall over China.https://doi.org/10.1038/s41612-023-00534-9 |
| spellingShingle | Xinyu Li Riyu Lu Guixing Chen Ruidan Chen Tropical cyclones over the South China Sea suppress the monsoonal rainfall in southern China npj Climate and Atmospheric Science |
| title | Tropical cyclones over the South China Sea suppress the monsoonal rainfall in southern China |
| title_full | Tropical cyclones over the South China Sea suppress the monsoonal rainfall in southern China |
| title_fullStr | Tropical cyclones over the South China Sea suppress the monsoonal rainfall in southern China |
| title_full_unstemmed | Tropical cyclones over the South China Sea suppress the monsoonal rainfall in southern China |
| title_short | Tropical cyclones over the South China Sea suppress the monsoonal rainfall in southern China |
| title_sort | tropical cyclones over the south china sea suppress the monsoonal rainfall in southern china |
| url | https://doi.org/10.1038/s41612-023-00534-9 |
| work_keys_str_mv | AT xinyuli tropicalcyclonesoverthesouthchinaseasuppressthemonsoonalrainfallinsouthernchina AT riyulu tropicalcyclonesoverthesouthchinaseasuppressthemonsoonalrainfallinsouthernchina AT guixingchen tropicalcyclonesoverthesouthchinaseasuppressthemonsoonalrainfallinsouthernchina AT ruidanchen tropicalcyclonesoverthesouthchinaseasuppressthemonsoonalrainfallinsouthernchina |