What Are the Finger‐Like Clouds in the Hurricane Inner‐Core Region?
Abstract Finger‐like km‐scale features have been observed along the inner‐edge of the eyewall of intense hurricanes. But due to the limited availability of observations, many important aspects of these features remain unknown. In this study, we aim to offer insights on the nature of these phenomena...
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| Format: | Article |
| Language: | English |
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Wiley
2024-12-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2024GL110810 |
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| author | Kun Gao Joseph Mouallem Lucas Harris |
| author_facet | Kun Gao Joseph Mouallem Lucas Harris |
| author_sort | Kun Gao |
| collection | DOAJ |
| description | Abstract Finger‐like km‐scale features have been observed along the inner‐edge of the eyewall of intense hurricanes. But due to the limited availability of observations, many important aspects of these features remain unknown. In this study, we aim to offer insights on the nature of these phenomena based on a four‐day‐duration O(100 m) grid spacing simulation that covers the inner‐core region of an idealized hurricane. The simulation successfully captured the finger‐like features, which closely resemble observed ones. We propose that these features are formed due to the shear instability associated with vertical distribution of the tangential wind in the inner‐core region. This proposed mechanism offers insights on several key characteristics of the features of interest, including their emergence time, frequency, radial location and vertical extent. Our study also demonstrates the feasibility of using multi‐level nesting for O(100 m) grid spacing hurricane simulations and predictions, aligning with the goals for next generation hurricane models. |
| format | Article |
| id | doaj-art-d5ef9e4f6aed45a1bd3d684a9ce3f4f1 |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-d5ef9e4f6aed45a1bd3d684a9ce3f4f12025-08-20T03:25:54ZengWileyGeophysical Research Letters0094-82761944-80072024-12-015123n/an/a10.1029/2024GL110810What Are the Finger‐Like Clouds in the Hurricane Inner‐Core Region?Kun Gao0Joseph Mouallem1Lucas Harris2Program in Atmospheric and Oceanic Sciences Princeton University Princeton NJ USAProgram in Atmospheric and Oceanic Sciences Princeton University Princeton NJ USANOAA/Geophysical Fluid Dynamics Laboratory Princeton NJ USAAbstract Finger‐like km‐scale features have been observed along the inner‐edge of the eyewall of intense hurricanes. But due to the limited availability of observations, many important aspects of these features remain unknown. In this study, we aim to offer insights on the nature of these phenomena based on a four‐day‐duration O(100 m) grid spacing simulation that covers the inner‐core region of an idealized hurricane. The simulation successfully captured the finger‐like features, which closely resemble observed ones. We propose that these features are formed due to the shear instability associated with vertical distribution of the tangential wind in the inner‐core region. This proposed mechanism offers insights on several key characteristics of the features of interest, including their emergence time, frequency, radial location and vertical extent. Our study also demonstrates the feasibility of using multi‐level nesting for O(100 m) grid spacing hurricane simulations and predictions, aligning with the goals for next generation hurricane models.https://doi.org/10.1029/2024GL110810hurricanetropical cycloneLEShigh‐resolutionFV3inner core |
| spellingShingle | Kun Gao Joseph Mouallem Lucas Harris What Are the Finger‐Like Clouds in the Hurricane Inner‐Core Region? Geophysical Research Letters hurricane tropical cyclone LES high‐resolution FV3 inner core |
| title | What Are the Finger‐Like Clouds in the Hurricane Inner‐Core Region? |
| title_full | What Are the Finger‐Like Clouds in the Hurricane Inner‐Core Region? |
| title_fullStr | What Are the Finger‐Like Clouds in the Hurricane Inner‐Core Region? |
| title_full_unstemmed | What Are the Finger‐Like Clouds in the Hurricane Inner‐Core Region? |
| title_short | What Are the Finger‐Like Clouds in the Hurricane Inner‐Core Region? |
| title_sort | what are the finger like clouds in the hurricane inner core region |
| topic | hurricane tropical cyclone LES high‐resolution FV3 inner core |
| url | https://doi.org/10.1029/2024GL110810 |
| work_keys_str_mv | AT kungao whatarethefingerlikecloudsinthehurricaneinnercoreregion AT josephmouallem whatarethefingerlikecloudsinthehurricaneinnercoreregion AT lucasharris whatarethefingerlikecloudsinthehurricaneinnercoreregion |