weatherbench2.derived_variables.VerticalVelocity

class weatherbench2.derived_variables.VerticalVelocity(u_name='u_component_of_wind', v_name='v_component_of_wind')

Compute vertical wind velocity, assuming the hydrostatic approximation.

To calculate ω, we integrate the continuity equation [1] in pressure coordinates:

∇_p · u + ∂ω/∂p = 0 ω = -∫ dp ∇_p · u

[1] See section 8.6.1 from Durran, D. R. Numerical Methods for Fluid Dynamics: With Applications to Geophysics. (Springer, New York, NY, 2010).

Parameters:

• u_name (str) –

• v_name (str) –

__init__(u_name='u_component_of_wind', v_name='v_component_of_wind')

Parameters:

• u_name (str) –

• v_name (str) –

Return type:

None

Methods

__init__([u_name, v_name])
compute(dataset)	Compute derived variable, returning it in a new DataArray.

Attributes

all_input_core_dims	The set of all input core dimensions.
base_variables	Return a list of base variables.
core_dims	Return core dimensions needed for computing this variable.
u_name
v_name