Impact of warm sea surface temperature over a Kuroshio large meander on extreme heavy rainfall caused by an extratropical cyclone
Abstract On 12–13 April 2020, an extreme heavy rainfall event associated with an extratropical cyclone occurred over the eastern coastal region of the Kii Peninsula, Japan, when unusual warm sea surface temperature anomalies (SSTAs) over a Kuroshio large meander (KLM) was observed. Here, we carry ou...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-02-01
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| Series: | Atmospheric Science Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/asl.1135 |
| _version_ | 1797937127002996736 |
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| author | Eigo Tochimoto Satoshi Iizuka |
| author_facet | Eigo Tochimoto Satoshi Iizuka |
| author_sort | Eigo Tochimoto |
| collection | DOAJ |
| description | Abstract On 12–13 April 2020, an extreme heavy rainfall event associated with an extratropical cyclone occurred over the eastern coastal region of the Kii Peninsula, Japan, when unusual warm sea surface temperature anomalies (SSTAs) over a Kuroshio large meander (KLM) was observed. Here, we carry out numerical experiments to examine the impact of the unusual SSTAs on this heavy rainfall event. The unusual warm SSTAs enhanced the low‐level moisture that was transported toward the coastal region by the cyclone, resulting in an increase in precipitation. In particular, the maximum 3‐hour precipitation is most affected by SSTAs compared with the maximum 1‐hour and 24‐hour precipitation. These findings suggest that the heat and moisture supply from the unusually warm SSTAs over the KLM affected the heavy rainfall event. |
| first_indexed | 2024-04-10T18:40:57Z |
| format | Article |
| id | doaj.art-a46a3a079e634f56b6b2744973448698 |
| institution | Directory Open Access Journal |
| issn | 1530-261X |
| language | English |
| last_indexed | 2024-04-10T18:40:57Z |
| publishDate | 2023-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Atmospheric Science Letters |
| spelling | doaj.art-a46a3a079e634f56b6b27449734486982023-02-01T15:09:22ZengWileyAtmospheric Science Letters1530-261X2023-02-01242n/an/a10.1002/asl.1135Impact of warm sea surface temperature over a Kuroshio large meander on extreme heavy rainfall caused by an extratropical cycloneEigo Tochimoto0Satoshi Iizuka1National Research Institute for Earth Science and Disaster Resilience Tsukuba JapanNational Research Institute for Earth Science and Disaster Resilience Tsukuba JapanAbstract On 12–13 April 2020, an extreme heavy rainfall event associated with an extratropical cyclone occurred over the eastern coastal region of the Kii Peninsula, Japan, when unusual warm sea surface temperature anomalies (SSTAs) over a Kuroshio large meander (KLM) was observed. Here, we carry out numerical experiments to examine the impact of the unusual SSTAs on this heavy rainfall event. The unusual warm SSTAs enhanced the low‐level moisture that was transported toward the coastal region by the cyclone, resulting in an increase in precipitation. In particular, the maximum 3‐hour precipitation is most affected by SSTAs compared with the maximum 1‐hour and 24‐hour precipitation. These findings suggest that the heat and moisture supply from the unusually warm SSTAs over the KLM affected the heavy rainfall event.https://doi.org/10.1002/asl.1135extratropical cycloneextreme heavy rainfallkuroshio large meandermarine heatwave |
| spellingShingle | Eigo Tochimoto Satoshi Iizuka Impact of warm sea surface temperature over a Kuroshio large meander on extreme heavy rainfall caused by an extratropical cyclone Atmospheric Science Letters extratropical cyclone extreme heavy rainfall kuroshio large meander marine heatwave |
| title | Impact of warm sea surface temperature over a Kuroshio large meander on extreme heavy rainfall caused by an extratropical cyclone |
| title_full | Impact of warm sea surface temperature over a Kuroshio large meander on extreme heavy rainfall caused by an extratropical cyclone |
| title_fullStr | Impact of warm sea surface temperature over a Kuroshio large meander on extreme heavy rainfall caused by an extratropical cyclone |
| title_full_unstemmed | Impact of warm sea surface temperature over a Kuroshio large meander on extreme heavy rainfall caused by an extratropical cyclone |
| title_short | Impact of warm sea surface temperature over a Kuroshio large meander on extreme heavy rainfall caused by an extratropical cyclone |
| title_sort | impact of warm sea surface temperature over a kuroshio large meander on extreme heavy rainfall caused by an extratropical cyclone |
| topic | extratropical cyclone extreme heavy rainfall kuroshio large meander marine heatwave |
| url | https://doi.org/10.1002/asl.1135 |
| work_keys_str_mv | AT eigotochimoto impactofwarmseasurfacetemperatureoverakuroshiolargemeanderonextremeheavyrainfallcausedbyanextratropicalcyclone AT satoshiiizuka impactofwarmseasurfacetemperatureoverakuroshiolargemeanderonextremeheavyrainfallcausedbyanextratropicalcyclone |