Back to Search
Start Over
Sensitivity of tropical cyclone intensification to inner-core structure.
- Source :
- Advances in Atmospheric Sciences; Oct2015, Vol. 32 Issue 10, p1407-1418, 12p
- Publication Year :
- 2015
-
Abstract
- In this study, the dependence of tropical cyclone (TC) development on the inner-core structure of the parent vortex is examined using a pair of idealized numerical simulations. It is found that the radial profile of inner-core relative vorticity may have a great impact on its subsequent development. For a system with a larger inner-core relative vorticity/inertial stability, the conversion ratio of the diabatic heating to kinetic energy is greater. Furthermore, the behavior of the convective vorticity eddies is likely modulated by the system-scale circulation. For a parent vortex with a relatively higher inner-core vorticity and larger negative radial vorticity gradient, convective eddy formation and radially inward propagation is promoted through vorticity segregation. This provides a greater potential for these small-scale convective cells to self-organize into a mesoscale inner-core structure in the TC. In turn, convectively induced diabatic heating that is close to the center, along with higher inertial stability, efficiently enhances system-scale secondary circulation. This study provides a solid basis for further research into how the initial structure of a TC influences storm dynamics and thermodynamics. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02561530
- Volume :
- 32
- Issue :
- 10
- Database :
- Complementary Index
- Journal :
- Advances in Atmospheric Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 108719502
- Full Text :
- https://doi.org/10.1007/s00376-015-4286-5