ERF_Wstar.H File Reference

#include <ERF_Constants.H>

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Functions
AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE bool	pblh_is_diagnosed (const amrex::Real &pblh)
AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE amrex::Real	calc_wstar (const amrex::Real &ust, const amrex::Real &tst, const amrex::Real &qst, const amrex::Real &pblh, const amrex::Real &th, const amrex::Real &thv, const amrex::Real &qv=amrex::Real(0))
AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE amrex::Real	calc_wstar (const amrex::Real &hfx, const amrex::Real &pblh, const amrex::Real &thv)

Function Documentation

calc_wstar() [1/2]

AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE amrex::Real calc_wstar	(	const amrex::Real &	hfx,
		const amrex::Real &	pblh,
		const amrex::Real &	thv
	)

Calculate the convective velocity scale from buoyancy flux.

Parameters

[in]	hfx	Buoyancy flux.
[in]	pblh	PBL height.
[in]	thv	Virtual potential temperature.

Returns

Convective velocity scale.

{
    if (hfx <= 0 || !pblh_is_diagnosed(pblh)) {
        return amrex::Real(0);
    } else {
        return std::cbrt(CONST_GRAV / thv * pblh * hfx);
    }
}

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calc_wstar() [2/2]

AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE amrex::Real calc_wstar	(	const amrex::Real &	ust,
		const amrex::Real &	tst,
		const amrex::Real &	qst,
		const amrex::Real &	pblh,
		const amrex::Real &	th,
		const amrex::Real &	thv,
		const amrex::Real &	qv = amrex::Real(0)
	)

{
    amrex::Real hfx = -ust*tst; // <theta'w'>
    if (hfx <= 0 || !pblh_is_diagnosed(pblh)) {
        return amrex::Real(0);
    }
    if (qv > 0) {
        // have moisture -- estimate buoyancy flux, <thetav'w'> (Stull 4.4.5d)
        hfx = hfx*(one + epsv*qv) + epsv*th*(-ust*qst);
    }
    return std::cbrt(CONST_GRAV / thv * pblh * hfx);
}

Referenced by surface_flux_charnock::iterate_flux(), surface_flux_mod_charnock::iterate_flux(), surface_flux_donelan::iterate_flux(), surface_temp_charnock::iterate_flux(), surface_temp_mod_charnock::iterate_flux(), surface_temp_donelan::iterate_flux(), surface_flux_wave_coupled::iterate_flux(), surface_temp_wave_coupled::iterate_flux(), surface_flux::iterate_flux(), surface_temp::iterate_flux(), surface_temp_eb::iterate_flux(), and surface_flux_eb::iterate_flux().

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pblh_is_diagnosed()

AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE bool pblh_is_diagnosed

(

const amrex::Real &

pblh

)

{
    return pblh < amrex::Real(0.5) * bogus_large_value;
}

Referenced by calc_wstar(), and SurfaceLayer::set_pblh().

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