calculate_pv Module Reference

Functions/Subroutines
subroutine	calc_pv (kx, ky, pv, x, x_north, x_south, f1, f2, deltax, deltay, bet, rs, lbc)
	Calculate potential vorticity from streamfunction. More...

Function/Subroutine Documentation

calc_pv()

subroutine calculate_pv::calc_pv	(	integer, intent(in)	kx,
		integer, intent(in)	ky,
		real(kind=kind_real), dimension(kx,ky,2), intent(out)	pv,
		real(kind=kind_real), dimension(kx,ky,2), intent(in)	x,
		real(kind=kind_real), dimension(2), intent(in)	x_north,
		real(kind=kind_real), dimension(2), intent(in)	x_south,
		real(kind=kind_real), intent(in)	f1,
		real(kind=kind_real), intent(in)	f2,
		real(kind=kind_real), intent(in)	deltax,
		real(kind=kind_real), intent(in)	deltay,
		real(kind=kind_real), intent(in)	bet,
		real(kind=kind_real), dimension(kx,ky), intent(in)	rs,
		logical, intent(in), optional	lbc
	)

Calculate potential vorticity from streamfunction.

Potential vorticity is defined as

\begin{eqnarray*} q_1 &=& \nabla^2 \psi_1 - F_1 (\psi_1 -\psi_2 ) + \beta y \\\\ q_2 &=& \nabla^2 \psi_2 - F_2 (\psi_2 -\psi_1 ) + \beta y + R_s \end{eqnarray*}

Parameters

[in]	kx	Zonal grid dimension
[in]	ky	Meridional grid dimension
[out]	pv	Potential vorticity
[in]	x	Streamfunction
[in]	x_north	Streamfunction on northern wall
[in]	x_south	Streamfunction on southern wall
[in]	f1	Coefficient in PV operator
[in]	f2	Coefficient in PV operator
[in]	deltax	Zonal grid spacing (non-dimensional)
[in]	deltay	Meridional grid spacing (non-dimensional)
[in]	bet	NS Gradient of Coriolis parameter
[in]	rs	Orography
[in]	lbc	Latitudinal boundaries?

Definition at line 21 of file calc_pv.f90.

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