Year: 2024
Type: article
Abstract: It is important to understand how tropical cyclones (TCs) decay over the ocean as this is a critical pre‐landfall stage. A modified exponential decay model ( model) with two parameters and is proposed. The scale parameter defines the decay scale, while the shape parameter determines whether the decay rate decelerates or accelerates over time. Global fittings indicate that around 40% of TCs exhibit decelerating decay , while the majority (about 60%) show accelerating decay . Correlation analysis reveals a strong negative correlation between the scale parameter and the initial Coriolis parameter and a positive correlation between the shape parameter and the meridional component of the initial translation velocity . The model provides a comprehensive understanding of how TCs decay with time and how environmental conditions affect the decay scale and evolution.
Source: Geophysical Research Letters
DOI: 10.1029/2024gl111029
Authors: Min Li, Ralf Toumi
Institution: Imperial College London
Language: English
Subfield: Atmospheric Science
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,900
OpenAlex ID: W4404819627