Calculates a number of inputs and parameters needed for the Willoughby model for each observation of a storm track. This function intakes an inputed storm track and calculates these parameters for each observation in the storm tracks.These inputs and parameters are later used to model wind speed at each grid point for every observation.
A dataframe with interpolated hurricane track data, as
The input dataset, but with columns added for the Willoughby parameters for every observations. Added columns include:
tcdir: The bearing of the storm, in degrees, with 0 degrees
indicating the storm is moving due east, 90 degrees indicating the
storm is moving due north, etc.
tcspd_u, tcspd_v: The u- and v-components of the forward
speed of the storm, in meters per second
vmax_gl: The maximum gradient-level 1-minute sustained
wind, in m / s
Rmax: The radius to maximum winds, in kilometers
X1, n, A, R1, R2: Parameters needed for
the Willoughby wind model
Willoughby HE, Darling RWR, and Rahn ME. 2006. Parametric representation of the primary hurricane vortex. Part II: A new family of sectionally continuous profiles. Monthly Weather Review 134(4):1102-1120.
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