Tropical Cyclone Track and Structure Sensitivity to Initialization in Idealized Simulations: A Preliminary Study
In the absence of environmental steering, tropical cyclone (TC) motion largely reflects ¡§beta drift¡¨ owing to differential planetary vorticity advection by the storm¡¦s outer circulation. It is known that model physics choices (especially those relating to convection) can significantly alter these...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Springer
2011-01-01
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| Series: | Terrestrial, Atmospheric and Oceanic Sciences |
| Subjects: | |
| Online Access: |
http://tao.cgu.org.tw/images/attachments/v226p559.pdf
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| Summary: | In the absence of environmental steering, tropical cyclone (TC) motion largely reflects ¡§beta drift¡¨ owing to differential planetary vorticity advection by the storm¡¦s outer circulation. It is known that model physics choices (especially those relating to convection) can significantly alter these outer winds and thus the storm track. Here, semi-idealized simulations are used to explore the influence of the initialization on subsequent vortex evolution and motion. Specifically, TCs bred from a buoyant ¡§bubble¡¨ are compared to bogussed vortices having a wide variety of parameterized shapes and sizes matching observations. |
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| ISSN: | 1017-0839 2311-7680 |