TurbulenceIndex1#

class rojak.turbulence.diagnostic.TurbulenceIndex1(u_wind: DataArray, v_wind: DataArray, geopotential: DataArray, total_deformation: DataArray)[source]#

Bases: Diagnostic

Turbulence Index 1 CAT diagnostic

Turbulence Index 1 was proposed by [Ellrod1992] and is a simplification of the Petterssen’s frontogenesis function from [Mancuso1966] which relates the rate of change in temperature gradient on a constant pressure surface due to deformation. This is then related to the vertical wind shear through the thermal wind relation. Thus, Turbulence Index 1 is a kinematic expression relating deformation and vertical wind shear defined as,

\[\text{TI1} = S_{v} \times \text{DEF}\]

where \(S_{v}\) is the vertical wind shear

Parameters:

  • u_wind (DataArray) – Zonal wind speeds in m/s

  • v_wind (DataArray) – Meridional wind speeds in m/s

  • geopotential (DataArray) – Geopotential in m^2/s

  • total_deformation (DataArray) – Total deformation in m/s

__init__(u_wind: DataArray, v_wind: DataArray, geopotential: DataArray, total_deformation: DataArray) → None[source]#
Parameters:
Return type:

None

Methods

__init__(u_wind, v_wind, geopotential, ...)

Attributes

computed_value

name