Numerical Simulation of Charge Structure Evolution during the Feeder-Type Cells Merging
Formation of the multipolar charge structure during feeder-type cell merging has important consequences in severe convective weather. This study used the Weather Research and Forecasting model with electrification and discharge parameterization schemes to simulate the feeder-type cell merging proces...
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| Format: | Article |
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MDPI AG
2023-10-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/14/10/1588 |
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| author | Jie Deng Fengxia Guo Jing Sun Zeyi Wu Zhou Liu Xian Lu Ke Chen Qingyuan Wang |
| author_facet | Jie Deng Fengxia Guo Jing Sun Zeyi Wu Zhou Liu Xian Lu Ke Chen Qingyuan Wang |
| author_sort | Jie Deng |
| collection | DOAJ |
| description | Formation of the multipolar charge structure during feeder-type cell merging has important consequences in severe convective weather. This study used the Weather Research and Forecasting model with electrification and discharge parameterization schemes to simulate the feeder-type cell merging process in the tail of a squall line that occurred on 27 June 2020 in Hubei Province (China). The results showed that the two cells involved in the merging process were at different life stages, but that the distribution of the inductive charging zones in the parent and child cells was broadly the same as that of the non-inductive charging zones. The charging zones were restricted to the mixed-phase region (between the 0 and −40 °C layers) with a cloud water content of >0.2 g/kg in the updraft zone, and the magnitude of the inductive charging rate was slightly smaller than that of the non-inductive charging rate. The differences in the vertical wind shear between the parent and child cells caused differences in the content, charge number, and polarity of the hydrometeors, which resulted in obvious differences in the charge structure characteristics between the two cells. Overall, the cloud droplets, ice, snow, and graupel were the main charged hydrometeors in the cells, whereas the rain and hail had little charge. |
| first_indexed | 2024-03-10T21:27:07Z |
| format | Article |
| id | doaj.art-1e2ccdc753f34705a0f95ef2949a9d1d |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-10T21:27:07Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-1e2ccdc753f34705a0f95ef2949a9d1d2023-11-19T15:37:09ZengMDPI AGAtmosphere2073-44332023-10-011410158810.3390/atmos14101588Numerical Simulation of Charge Structure Evolution during the Feeder-Type Cells MergingJie Deng0Fengxia Guo1Jing Sun2Zeyi Wu3Zhou Liu4Xian Lu5Ke Chen6Qingyuan Wang7Emergency Management College/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science & Technology, Nanjing 210044, ChinaEmergency Management College/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science & Technology, Nanjing 210044, ChinaHubei Key Laboratory for Heavy Rain Monitoring and Warning Research, Institute of Heavy Rain, China Meteorological Administration, Wuhan 430205, ChinaEmergency Management College/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science & Technology, Nanjing 210044, ChinaEmergency Management College/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science & Technology, Nanjing 210044, ChinaEmergency Management College/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science & Technology, Nanjing 210044, ChinaEmergency Management College/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science & Technology, Nanjing 210044, ChinaEmergency Management College/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science & Technology, Nanjing 210044, ChinaFormation of the multipolar charge structure during feeder-type cell merging has important consequences in severe convective weather. This study used the Weather Research and Forecasting model with electrification and discharge parameterization schemes to simulate the feeder-type cell merging process in the tail of a squall line that occurred on 27 June 2020 in Hubei Province (China). The results showed that the two cells involved in the merging process were at different life stages, but that the distribution of the inductive charging zones in the parent and child cells was broadly the same as that of the non-inductive charging zones. The charging zones were restricted to the mixed-phase region (between the 0 and −40 °C layers) with a cloud water content of >0.2 g/kg in the updraft zone, and the magnitude of the inductive charging rate was slightly smaller than that of the non-inductive charging rate. The differences in the vertical wind shear between the parent and child cells caused differences in the content, charge number, and polarity of the hydrometeors, which resulted in obvious differences in the charge structure characteristics between the two cells. Overall, the cloud droplets, ice, snow, and graupel were the main charged hydrometeors in the cells, whereas the rain and hail had little charge.https://www.mdpi.com/2073-4433/14/10/1588numerical simulationcells mergercharge structureelectrificationhydrometeor |
| spellingShingle | Jie Deng Fengxia Guo Jing Sun Zeyi Wu Zhou Liu Xian Lu Ke Chen Qingyuan Wang Numerical Simulation of Charge Structure Evolution during the Feeder-Type Cells Merging Atmosphere numerical simulation cells merger charge structure electrification hydrometeor |
| title | Numerical Simulation of Charge Structure Evolution during the Feeder-Type Cells Merging |
| title_full | Numerical Simulation of Charge Structure Evolution during the Feeder-Type Cells Merging |
| title_fullStr | Numerical Simulation of Charge Structure Evolution during the Feeder-Type Cells Merging |
| title_full_unstemmed | Numerical Simulation of Charge Structure Evolution during the Feeder-Type Cells Merging |
| title_short | Numerical Simulation of Charge Structure Evolution during the Feeder-Type Cells Merging |
| title_sort | numerical simulation of charge structure evolution during the feeder type cells merging |
| topic | numerical simulation cells merger charge structure electrification hydrometeor |
| url | https://www.mdpi.com/2073-4433/14/10/1588 |
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