Diurnal variations of tropical cyclone outer region size growth
Abstract Various aspects of tropical cyclones (TCs) fluctuate with the diurnal cycle. TC size is critical to the extent of its damage, but diurnal variations in the growth of the outer region size have largely remained unexplored. This paper examines the diurnal variations in the growth of the radiu...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-12-01
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| Series: | Atmospheric Science Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/asl.1183 |
| _version_ | 1797404529692508160 |
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| author | Jiacheng Hong Qiaoyan Wu |
| author_facet | Jiacheng Hong Qiaoyan Wu |
| author_sort | Jiacheng Hong |
| collection | DOAJ |
| description | Abstract Various aspects of tropical cyclones (TCs) fluctuate with the diurnal cycle. TC size is critical to the extent of its damage, but diurnal variations in the growth of the outer region size have largely remained unexplored. This paper examines the diurnal variations in the growth of the radius of gale‐force winds (34 kt; R34) by analyzing best‐track data from 2001 to 2019 for both North Atlantic TCs and global TCs outside of the North Atlantic region. Statistically significant diurnal variations was found for R34 growth, with the maximum 6‐h growth rate occurring at 2100–0300 local solar time (LST) for North Atlantic TCs, and at 0300–0900 LST for global TCs excluding the North Atlantic which experienced rapid intensification (≥30 knots within 24 h). The higher R34 6‐h growth rates during the night were linked to a larger extent of very deep convective clouds with infrared brightness temperatures <208 K during this time. |
| first_indexed | 2024-03-09T02:56:19Z |
| format | Article |
| id | doaj.art-a785009401fb40048817611782e2dfff |
| institution | Directory Open Access Journal |
| issn | 1530-261X |
| language | English |
| last_indexed | 2024-03-09T02:56:19Z |
| publishDate | 2023-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | Atmospheric Science Letters |
| spelling | doaj.art-a785009401fb40048817611782e2dfff2023-12-05T06:30:42ZengWileyAtmospheric Science Letters1530-261X2023-12-012412n/an/a10.1002/asl.1183Diurnal variations of tropical cyclone outer region size growthJiacheng Hong0Qiaoyan Wu1State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography Ministry of Natural Resources Hangzhou Zhejiang Province ChinaState Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography Ministry of Natural Resources Hangzhou Zhejiang Province ChinaAbstract Various aspects of tropical cyclones (TCs) fluctuate with the diurnal cycle. TC size is critical to the extent of its damage, but diurnal variations in the growth of the outer region size have largely remained unexplored. This paper examines the diurnal variations in the growth of the radius of gale‐force winds (34 kt; R34) by analyzing best‐track data from 2001 to 2019 for both North Atlantic TCs and global TCs outside of the North Atlantic region. Statistically significant diurnal variations was found for R34 growth, with the maximum 6‐h growth rate occurring at 2100–0300 local solar time (LST) for North Atlantic TCs, and at 0300–0900 LST for global TCs excluding the North Atlantic which experienced rapid intensification (≥30 knots within 24 h). The higher R34 6‐h growth rates during the night were linked to a larger extent of very deep convective clouds with infrared brightness temperatures <208 K during this time.https://doi.org/10.1002/asl.1183deep convectiondiurnal variationsize growthtropical cyclone |
| spellingShingle | Jiacheng Hong Qiaoyan Wu Diurnal variations of tropical cyclone outer region size growth Atmospheric Science Letters deep convection diurnal variation size growth tropical cyclone |
| title | Diurnal variations of tropical cyclone outer region size growth |
| title_full | Diurnal variations of tropical cyclone outer region size growth |
| title_fullStr | Diurnal variations of tropical cyclone outer region size growth |
| title_full_unstemmed | Diurnal variations of tropical cyclone outer region size growth |
| title_short | Diurnal variations of tropical cyclone outer region size growth |
| title_sort | diurnal variations of tropical cyclone outer region size growth |
| topic | deep convection diurnal variation size growth tropical cyclone |
| url | https://doi.org/10.1002/asl.1183 |
| work_keys_str_mv | AT jiachenghong diurnalvariationsoftropicalcycloneouterregionsizegrowth AT qiaoyanwu diurnalvariationsoftropicalcycloneouterregionsizegrowth |