Mechanisms of the transport height of water vapor by tropical cyclones on heavy rainfall
The moisture transport by tropical cyclones is characterized by high intensity and altitude, which may affect the microphysical processes of heavy rainfall triggered by tropical cyclones. In this study, we used the Weather Research and Forecasting (WRF) model to conduct numerical simulations on a he...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Weather and Climate Extremes |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2212094723000403 |
| _version_ | 1797733883425325056 |
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| author | Tianao Liu Yilun Chen Shumin Chen Weibiao Li Aoqi Zhang |
| author_facet | Tianao Liu Yilun Chen Shumin Chen Weibiao Li Aoqi Zhang |
| author_sort | Tianao Liu |
| collection | DOAJ |
| description | The moisture transport by tropical cyclones is characterized by high intensity and altitude, which may affect the microphysical processes of heavy rainfall triggered by tropical cyclones. In this study, we used the Weather Research and Forecasting (WRF) model to conduct numerical simulations on a heavy rainfall event near the Yangtze River Delta induced by Super Typhoon Mangkhut (2018). The vertical distribution of water vapor was modified to highlight the impact of moisture transport at various heights. The results showed that the distribution and intensity of the rainfall event changed with the transport height of water vapor. Ensuring that the water vapor content in the column kept constant, the total amount of precipitation in the region was greatest when the transport occurred primarily at low levels, and smallest when the transport occurred primarily at mid-levels. Detailed analysis of cloud water, rainwater, and frozen hydrometeors showed that liquid- (ice-) phase processes were the dominant microphysical processes when the transport height is low (mid-to-low). The deposition and riming processes contributed to heavy precipitation when the transport height was at the mid-to-upper levels. Our findings underscore the influence of moisture transport with high intensities and altitudes by tropical cyclones on microphysical processes, ultimately leading to changes in the distribution and intensity of heavy rainfall. Therefore, when analyzing heavy precipitation events, particular attention should be given to the moisture transport at the mid-to-upper levels. |
| first_indexed | 2024-03-12T12:35:02Z |
| format | Article |
| id | doaj.art-3d33343610ff4f6ab31da4941c41cd49 |
| institution | Directory Open Access Journal |
| issn | 2212-0947 |
| language | English |
| last_indexed | 2024-03-12T12:35:02Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Weather and Climate Extremes |
| spelling | doaj.art-3d33343610ff4f6ab31da4941c41cd492023-08-29T04:17:27ZengElsevierWeather and Climate Extremes2212-09472023-09-0141100587Mechanisms of the transport height of water vapor by tropical cyclones on heavy rainfallTianao Liu0Yilun Chen1Shumin Chen2Weibiao Li3Aoqi Zhang4Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, 519082, ChinaSouthern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, 519082, ChinaSouthern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, 519082, ChinaSouthern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, 519082, ChinaSouthern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, 519082, China; Corresponding author.The moisture transport by tropical cyclones is characterized by high intensity and altitude, which may affect the microphysical processes of heavy rainfall triggered by tropical cyclones. In this study, we used the Weather Research and Forecasting (WRF) model to conduct numerical simulations on a heavy rainfall event near the Yangtze River Delta induced by Super Typhoon Mangkhut (2018). The vertical distribution of water vapor was modified to highlight the impact of moisture transport at various heights. The results showed that the distribution and intensity of the rainfall event changed with the transport height of water vapor. Ensuring that the water vapor content in the column kept constant, the total amount of precipitation in the region was greatest when the transport occurred primarily at low levels, and smallest when the transport occurred primarily at mid-levels. Detailed analysis of cloud water, rainwater, and frozen hydrometeors showed that liquid- (ice-) phase processes were the dominant microphysical processes when the transport height is low (mid-to-low). The deposition and riming processes contributed to heavy precipitation when the transport height was at the mid-to-upper levels. Our findings underscore the influence of moisture transport with high intensities and altitudes by tropical cyclones on microphysical processes, ultimately leading to changes in the distribution and intensity of heavy rainfall. Therefore, when analyzing heavy precipitation events, particular attention should be given to the moisture transport at the mid-to-upper levels.http://www.sciencedirect.com/science/article/pii/S2212094723000403Heavy precipitationTransport height of water vaporNumerical modelsMicrophysical processesTropical cyclones |
| spellingShingle | Tianao Liu Yilun Chen Shumin Chen Weibiao Li Aoqi Zhang Mechanisms of the transport height of water vapor by tropical cyclones on heavy rainfall Weather and Climate Extremes Heavy precipitation Transport height of water vapor Numerical models Microphysical processes Tropical cyclones |
| title | Mechanisms of the transport height of water vapor by tropical cyclones on heavy rainfall |
| title_full | Mechanisms of the transport height of water vapor by tropical cyclones on heavy rainfall |
| title_fullStr | Mechanisms of the transport height of water vapor by tropical cyclones on heavy rainfall |
| title_full_unstemmed | Mechanisms of the transport height of water vapor by tropical cyclones on heavy rainfall |
| title_short | Mechanisms of the transport height of water vapor by tropical cyclones on heavy rainfall |
| title_sort | mechanisms of the transport height of water vapor by tropical cyclones on heavy rainfall |
| topic | Heavy precipitation Transport height of water vapor Numerical models Microphysical processes Tropical cyclones |
| url | http://www.sciencedirect.com/science/article/pii/S2212094723000403 |
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