will10a: Calculate X1 for Willoughby model

In stormwindmodel: Model Tropical Cyclone Wind Speeds

Description

Calculates X1, a parameter for the Willoughby wind model using equation 10a (Willoughby et al. 2006).

Usage

will10a(vmax_gl, tclat)

Arguments

vmax_gl	Numeric vector of the tangential wind component of the maximum gradient wind speed, in meters per second
tclat	Numeric vector of the absolute value of latitude, in degrees.

Details

This function uses the following equation (equation 10a, Willoughby et al. 2006) to calculate the X1 parameter:

X1 = 317.1 - 2.026vmax_gl + 1.915 φ

where:

• X1: Parameter for the Willoughby wind model

• vmax_gl: Maximum gradient-level 1-min sustained wind (m / s)

• φ: Latitude, in decimal degrees

Value

A numeric vector giving one of the parameters (X1) required for the Willoughby wind model.

References

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.

stormwindmodel documentation built on July 27, 2020, 9:06 a.m.