Long‐term changes in spatially coherent extreme precipitation systems over Central India
Abstract The present study examined extreme rainfall events (EREs) in central India during the summer monsoon season, focusing on their spatial characteristics. A station‐based gridded and a station‐satellite‐blended dataset was used to examine long‐term and recent variations in precipitation charac...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-11-01
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| Series: | Atmospheric Science Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/asl.1118 |
| _version_ | 1811324047510732800 |
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| author | Anu Gupta Hiroshi G. Takahashi |
| author_facet | Anu Gupta Hiroshi G. Takahashi |
| author_sort | Anu Gupta |
| collection | DOAJ |
| description | Abstract The present study examined extreme rainfall events (EREs) in central India during the summer monsoon season, focusing on their spatial characteristics. A station‐based gridded and a station‐satellite‐blended dataset was used to examine long‐term and recent variations in precipitation characteristics for 50 years (1951–2000) and 38 years (1981–2018), respectively. A precipitation system approach (PSA) was applied to identify the ERE precipitation systems and categorized spatial sizes of ERE systems into three categories: sporadic, intermediate, and massive ERE precipitation systems. Conventionally, the ERE frequency is equal to the total number of ERE grids, whereas PSA counts ERE systems. The sporadic precipitation grid contributes 42% of all the ERE grids, and sporadic EREs frequency increases in the long‐term. The long‐term trend of intermediate and massive EREs does not increase and quite sharply increases, respectively, and these EREs are also intensifying. Recent 38 years have shown a reverse in the trends of ERE characteristics, the frequency and intensity of intermediate and massive EREs have decreased, whereas the massive ERE systems are broadening. |
| first_indexed | 2024-04-13T14:07:19Z |
| format | Article |
| id | doaj.art-1e8ad5c17e8a41a4a9741d7d1d85b380 |
| institution | Directory Open Access Journal |
| issn | 1530-261X |
| language | English |
| last_indexed | 2024-04-13T14:07:19Z |
| publishDate | 2022-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Atmospheric Science Letters |
| spelling | doaj.art-1e8ad5c17e8a41a4a9741d7d1d85b3802022-12-22T02:43:52ZengWileyAtmospheric Science Letters1530-261X2022-11-012311n/an/a10.1002/asl.1118Long‐term changes in spatially coherent extreme precipitation systems over Central IndiaAnu Gupta0Hiroshi G. Takahashi1Department of Geography Tokyo Metropolitan University Tokyo JapanDepartment of Geography Tokyo Metropolitan University Tokyo JapanAbstract The present study examined extreme rainfall events (EREs) in central India during the summer monsoon season, focusing on their spatial characteristics. A station‐based gridded and a station‐satellite‐blended dataset was used to examine long‐term and recent variations in precipitation characteristics for 50 years (1951–2000) and 38 years (1981–2018), respectively. A precipitation system approach (PSA) was applied to identify the ERE precipitation systems and categorized spatial sizes of ERE systems into three categories: sporadic, intermediate, and massive ERE precipitation systems. Conventionally, the ERE frequency is equal to the total number of ERE grids, whereas PSA counts ERE systems. The sporadic precipitation grid contributes 42% of all the ERE grids, and sporadic EREs frequency increases in the long‐term. The long‐term trend of intermediate and massive EREs does not increase and quite sharply increases, respectively, and these EREs are also intensifying. Recent 38 years have shown a reverse in the trends of ERE characteristics, the frequency and intensity of intermediate and massive EREs have decreased, whereas the massive ERE systems are broadening.https://doi.org/10.1002/asl.1118climate variabilityextreme rainfallprecipitation systemssouth Asian monsoonspatial scale of rainfall |
| spellingShingle | Anu Gupta Hiroshi G. Takahashi Long‐term changes in spatially coherent extreme precipitation systems over Central India Atmospheric Science Letters climate variability extreme rainfall precipitation systems south Asian monsoon spatial scale of rainfall |
| title | Long‐term changes in spatially coherent extreme precipitation systems over Central India |
| title_full | Long‐term changes in spatially coherent extreme precipitation systems over Central India |
| title_fullStr | Long‐term changes in spatially coherent extreme precipitation systems over Central India |
| title_full_unstemmed | Long‐term changes in spatially coherent extreme precipitation systems over Central India |
| title_short | Long‐term changes in spatially coherent extreme precipitation systems over Central India |
| title_sort | long term changes in spatially coherent extreme precipitation systems over central india |
| topic | climate variability extreme rainfall precipitation systems south Asian monsoon spatial scale of rainfall |
| url | https://doi.org/10.1002/asl.1118 |
| work_keys_str_mv | AT anugupta longtermchangesinspatiallycoherentextremeprecipitationsystemsovercentralindia AT hiroshigtakahashi longtermchangesinspatiallycoherentextremeprecipitationsystemsovercentralindia |