Raindrop size distribution variability associated with size‐dependent advection in convective precipitation systems
Abstract Raindrop size distribution (DSD) is fundamental for understanding precipitation processes. This study utilized a two‐dimensional simulation with bin cloud microphysics parameterizations to investigate the spatiotemporal variability of DSDs owing to the influence of mesoscale circulation ass...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2025-01-01
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| Series: | Atmospheric Science Letters |
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| Online Access: | https://doi.org/10.1002/asl.1286 |
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| author | Megumi Okazaki Kosei Yamaguchi Tomoro Yanase Eiichi Nakakita |
| author_facet | Megumi Okazaki Kosei Yamaguchi Tomoro Yanase Eiichi Nakakita |
| author_sort | Megumi Okazaki |
| collection | DOAJ |
| description | Abstract Raindrop size distribution (DSD) is fundamental for understanding precipitation processes. This study utilized a two‐dimensional simulation with bin cloud microphysics parameterizations to investigate the spatiotemporal variability of DSDs owing to the influence of mesoscale circulation associated with the precipitation system. The simulated multicellular convection went through developing, mature, and dissipating stages, with updraft weakening and rainfall area expanding through these stages. The width of the DSD narrowed as rainfall weakened. In addition, a significant bimodal DSD was observed during the dissipating stage. Furthermore, we investigated the spatial distribution of the number density of raindrops corresponding to the maximum, local minimum, and local maximum of the significant bimodal DSD in the dissipating stage. According to the results, the raindrops constituting the maximum, local minimum, and local maximum followed different advection processes. This size‐dependent advection effect may have contributed to the bimodal DSD formation. |
| format | Article |
| id | doaj-art-719d181320304876865942166b332510 |
| institution | Kabale University |
| issn | 1530-261X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Atmospheric Science Letters |
| spelling | doaj-art-719d181320304876865942166b3325102025-01-29T09:47:21ZengWileyAtmospheric Science Letters1530-261X2025-01-01261n/an/a10.1002/asl.1286Raindrop size distribution variability associated with size‐dependent advection in convective precipitation systemsMegumi Okazaki0Kosei Yamaguchi1Tomoro Yanase2Eiichi Nakakita3Disaster Prevention Research Institute Kyoto University Uji JapanDisaster Prevention Research Institute Kyoto University Uji JapanRIKEN Cluster for Pioneering Research Kobe JapanDisaster Prevention Research Institute Kyoto University Uji JapanAbstract Raindrop size distribution (DSD) is fundamental for understanding precipitation processes. This study utilized a two‐dimensional simulation with bin cloud microphysics parameterizations to investigate the spatiotemporal variability of DSDs owing to the influence of mesoscale circulation associated with the precipitation system. The simulated multicellular convection went through developing, mature, and dissipating stages, with updraft weakening and rainfall area expanding through these stages. The width of the DSD narrowed as rainfall weakened. In addition, a significant bimodal DSD was observed during the dissipating stage. Furthermore, we investigated the spatial distribution of the number density of raindrops corresponding to the maximum, local minimum, and local maximum of the significant bimodal DSD in the dissipating stage. According to the results, the raindrops constituting the maximum, local minimum, and local maximum followed different advection processes. This size‐dependent advection effect may have contributed to the bimodal DSD formation.https://doi.org/10.1002/asl.1286advectionbimodalmulticellular convectionraindrop size distribution |
| spellingShingle | Megumi Okazaki Kosei Yamaguchi Tomoro Yanase Eiichi Nakakita Raindrop size distribution variability associated with size‐dependent advection in convective precipitation systems Atmospheric Science Letters advection bimodal multicellular convection raindrop size distribution |
| title | Raindrop size distribution variability associated with size‐dependent advection in convective precipitation systems |
| title_full | Raindrop size distribution variability associated with size‐dependent advection in convective precipitation systems |
| title_fullStr | Raindrop size distribution variability associated with size‐dependent advection in convective precipitation systems |
| title_full_unstemmed | Raindrop size distribution variability associated with size‐dependent advection in convective precipitation systems |
| title_short | Raindrop size distribution variability associated with size‐dependent advection in convective precipitation systems |
| title_sort | raindrop size distribution variability associated with size dependent advection in convective precipitation systems |
| topic | advection bimodal multicellular convection raindrop size distribution |
| url | https://doi.org/10.1002/asl.1286 |
| work_keys_str_mv | AT megumiokazaki raindropsizedistributionvariabilityassociatedwithsizedependentadvectioninconvectiveprecipitationsystems AT koseiyamaguchi raindropsizedistributionvariabilityassociatedwithsizedependentadvectioninconvectiveprecipitationsystems AT tomoroyanase raindropsizedistributionvariabilityassociatedwithsizedependentadvectioninconvectiveprecipitationsystems AT eiichinakakita raindropsizedistributionvariabilityassociatedwithsizedependentadvectioninconvectiveprecipitationsystems |