An inner-core analysis of the axisymmetric and asymmetric  intensification of tropical cyclones: Influence of shear

Gopalakrishnan, Sundararaman G.; Osuri, Krishna K.; Marks, Frank D.; Mohanty, U. C.

doi:10.54302/mausam.v70i4.206

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An inner-core analysis of the axisymmetric and asymmetric intensification of tropical cyclones: Influence of shear

2021
By Gopalakrishnan, Sundararaman G. ; Osuri, Krishna K. ; Marks, Frank D. ; ...
Source: MAUSAM, 70(4), 667-690

[PDF-3.64 MB]

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Journal Title:

MAUSAM
Personal Author:

Gopalakrishnan, Sundararaman G. ; Osuri, Krishna K. ; Marks, Frank D. ; Mohanty, U. C.

Gopalakrishnan, Sundararaman G. ; Osuri, Krishna K. ; Marks, Frank D. ; Mohanty, U. C. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; AOML (Atlantic Oceanographic and Meteorological Laboratory)

OAR (Oceanic and Atmospheric Research) ; AOML (Atlantic Oceanographic and Meteorological Laboratory) Less -
Description:

The state-of-the-art in intensity forecasting is provided using the Hurricane Weather Research and Forecasting (HWRF) modeling system as the basis. A brief review of existing axisymmetric theory for the intensification of tropical cyclones (TCs) is also provided. Two cloud-resolving simulations from HWRF, one from an idealized case and another from a retrospective forecast of Super Cyclone Phalin (2013), are used to understand the axisymmetric, rapid intensification (RI) process. However, TCs are rarely axisymmetric. The asymmetric structure in the inner core of a TC may be generated by both internal dynamics and external forcing due to environmental factors such as shear and moisture. We use a retrospective HWRF run from Atlantic Hurricane Earl (2010) to understand the role of shear-induced asymmetries on the RI of TCs. We seek to address the following questions: How do TCs rapidly intensify in a sheared environment? What is the role of eddy fluxes on TC intensification? Is the well-accepted theoretical framework of TC intensification still valid for sheared storms undergoing RI?
Keywords:

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Atmospheric Science Geophysics
Source:

MAUSAM, 70(4), 667-690
DOI:

https://doi.org/10.54302/mausam.v70i4.206
ISSN:

0252-9416
Format:

PDF
Publisher:

India Meteorological Department
Document Type:

Journal Article
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https://creativecommons.org/licenses/by-nc/4.0/
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CC BY-NC
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urn:sha-512:3a2231b00c7699d26cd19d33bf3168824d3ace72be9c8170e20a0fcbde3f3b0f7c7ed532298a4c318ee7c3cc4845d7bf5271b7943b0deaba37ba5eceea681ebb
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https://repository.library.noaa.gov/view/noaa/62093/noaa_62093_DS1.pdf
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An inner-core analysis of the axisymmetric and asymmetric intensification of tropical cyclones: Influence of shear

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