Wind Speed Analysis Method within WRF-ARW Tropical Cyclone Modeling

This paper presents an analysis of a new method for retrieving the parameters of the atmospheric boundary layer in hurricanes. This method is based on the approximation of the upper parabolic part of the wind speed profile and the retrieval of the lower logarithmic part. Based on the logarithmic part, the friction velocity, near-surface wind speed and the aerodynamic drag coefficient are obtained. The obtained data are used for the verification of the modeling data in the WRF-ARW model. The case of the Irma hurricane is studied. Different configurations of the model are tested, which differ in the use of physical parameterizations. The difference of wind profiles in various sectors of the hurricane is studied.

Automated summary

This paper introduces a new method for retrieving parameters of the atmospheric boundary layer in hurricanes. The method approximates the upper parabolic part and retrieves the lower logarithmic part of the wind speed profile. Parameters such as friction velocity, near-surface wind speed, and aerodynamic drag coefficient are obtained based on the logarithmic part. These data are used to validate modeling data in the WRF-ARW model, with a particular focus on the case of the Irma hurricane. Different model configurations, including physical parameterizations, are tested to study the variations in wind profiles across various sectors of the hurricane.