will7a | R Documentation |
Calculates the radius at which the maximum wind occurs (Rmax), based on the maximum gradient-level 1-min sustained wind (vmax_gl) and latitude (φ). This function implements Willoughby et al. (2006), Equation 7a.
will7a(vmax_gl, tclat)
vmax_gl |
Maximum gradient-level 1-min sustained wind for the tropical cyclone |
tclat |
Numeric vector of the value of latitude, in degrees. |
This function fits the following equation:
Rmax = 46.4 e^(- 0.0155 vmax_gl) + 0.0169φ
where:
Rmax: Radius from the storm center to the point at which the maximum wind occurs (km)
vmax_gl: Tangential wind component of the gradient-level maximum wind speed (m / s)
φ: Absolute value of latitude (in decimal degrees)
A numeric vector with Rmax, the radius of maximum winds, in kilometers.
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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