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avdvective temperature flux only for ice cover #79

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bolding merged 2 commits into from
Jan 13, 2026
+11 −10
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avdvective temperature flux only for ice cover #79

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de87227
avdvective temperature flux only for ice cover
bderembl Dec 9, 2025
96b051b
consistent salinity and heat fluxes
bderembl Jan 12, 2026
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5 changes: 3 additions & 2 deletions src/gotm/gotm.F90
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Expand Up @@ -784,12 +784,13 @@ subroutine integrate_gotm()
#ifdef _ICE_
I_0%value = transmissivity*I_0%value
swf=melt_rate
shf=ocean_ice_heat_flux
ssf=ocean_ice_salt_flux
shf=ocean_ice_heat_flux + rho0*cp*T(nlev)*swf
ssf=ocean_ice_salt_flux + S(nlev)*swf
#endif
else
swf=precip_input%value+evap
shf=-heat_input%value ! temperature() changed to positive heat flux upwards (v7)
ssf= S(nlev)*swf
tx = tx/rho0
ty = ty/rho0
end if
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2 changes: 1 addition & 1 deletion src/meanflow/salinity.F90
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Expand Up @@ -116,7 +116,7 @@ subroutine salinity(nlev,dt,cnpar,wflux,sflux,nus,gams)
! set boundary conditions
DiffBcup = Neumann
DiffBcdw = Neumann
DiffSup = -S(nlev)*wflux-sflux
DiffSup = -sflux
DiffSdw = _ZERO_

AdvBcup = oneSided
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8 changes: 4 additions & 4 deletions src/meanflow/temperature.F90
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Expand Up @@ -137,10 +137,10 @@ subroutine temperature(nlev,dt,cnpar,I_0,wflux,hflux,nuh,gamh,rad)
DiffBcup = Neumann
DiffBcdw = Neumann

! HB:
! Note that this is the surface temperature flux for rigid-lid models like GOTM.
! For a free surface model the surface temperature flux must be - -hflux/(rho0*cp)
DiffTup = -T(nlev)*wflux-hflux/(rho0*cp)
! For the open ocean the surface temperature flux is only the diffusive
! component. In case of ice cover, hflux is defined as the sum of a diffusive
! and advective component.
DiffTup = -hflux/(rho0*cp)
#ifndef _ICE_
! simple sea ice model: surface heat flux switched off for sst < freezing temp
if (T(nlev) .le. -0.0575*S(nlev)) then
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6 changes: 3 additions & 3 deletions src/util/convert_fluxes.F90
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Expand Up @@ -66,11 +66,11 @@ subroutine convert_fluxes(nlev,gravity,swf,shf,ssf,rad,Tsrf,Ssrf,tFlux,sFlux,bt
beta0 = get_beta(Ssrf,Tsrf,_ZERO_)

! temperature flux and associated buoyancy flux
tFlux = -Tsrf*swf - shf/(rho0*cp)
btFlux = gravity*alpha0*tFlux
tFlux = - shf/(rho0*cp)
btFlux = gravity*alpha0*tFlux

! salinity flux and associated buoyancy flux
sFlux = -Ssrf*swf - ssf
sFlux = - ssf
bsFlux = -gravity*beta0*sFlux

! radiative temperature and buoyancy flux profiles
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