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jahn |
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C $Header$ |
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C $Name$ |
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#include "DARWIN_OPTIONS.h" |
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CBOP |
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C !ROUTINE: MONOD_RADTRANS |
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C !INTERFACE: ========================================================== |
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subroutine MONOD_RADTRANS( |
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I H,rmud,Ed,Es,a_k,bt_k,bb_k, |
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O Edz,Esz,Euz,Eutop, |
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O tirrq,tirrwq, |
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I myThid) |
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C !DESCRIPTION: |
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c MODIFIED VERSION OF WG's edeu.F |
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c |
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c |
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c Model of irradiance in the water column. Accounts for three |
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c irradiance streams: |
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c |
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c Edz = direct downwelling irradiance in W/m2 per waveband |
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c Esz = diffuse downwelling irradiance in W/m2 per waveband |
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c Euz = diffuse upwelling irradiance in W/m2 per waveband |
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c |
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c Propagation is done in energy units, tests are done in quanta, |
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c final is quanta for phytoplankton growth. |
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c |
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C !USES: =============================================================== |
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IMPLICIT NONE |
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#include "SIZE.h" /* Nr */ |
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C#include "EEPARAMS.h" |
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#include "MONOD_SIZE.h" |
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#include "SPECTRAL_SIZE.h" /* tlam */ |
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#include "SPECTRAL.h" /* WtouEin */ |
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#include "WAVEBANDS_PARAMS.h" /* darwin_PAR_ilamLo/Hi |
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darwin_radmodThresh |
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darwin_Dmax darwin_rmus darwin_rmuu */ |
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C !INPUT PARAMETERS: =================================================== |
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C H :: layer thickness (should include hFacC!) |
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C rmud :: inv.cosine of direct (underwater solar) zenith angle |
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C Ed :: direct downwelling irradiance below surface per waveband |
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C Es :: diffuse downwelling irradiance below surface per waveband |
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C a_k :: absorption coefficient per level and waveband (1/m) |
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C bt_k :: total scattering coefficient per level and waveband (1/m) |
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C = forward + back scattering coefficient |
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C bb_k :: backscattering coefficient per level and waveband (1/m) |
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_RL H(Nr) |
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_RL rmud |
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_RL Ed(tlam), Es(tlam) |
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_RL a_k(Nr,tlam), bt_k(Nr,tlam), bb_k(Nr,tlam) |
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INTEGER myThid |
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C !OUTPUT PARAMETERS: ================================================== |
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C Edz :: direct downwelling irradiance at bottom of layer |
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C Esz :: diffuse downwelling irradiance at bottom of layer |
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C Euz :: diffuse upwelling irradiance at bottom of layer |
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C tirrq :: total scalar irradiance at cell center (uEin/m2/s) |
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C tirrwq :: total scalar irradiance at cell center per waveband |
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_RL Edz(tlam,Nr),Esz(tlam,Nr),Euz(tlam,Nr),Eutop(tlam,Nr) |
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_RL tirrq(Nr) |
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_RL tirrwq(tlam,Nr) |
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#ifdef DAR_RADTRANS |
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C !LOCAL VARIABLES: ==================================================== |
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INTEGER k, np, nl |
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C _RL Etop, Ebot |
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_RL Etopq,Ebotq |
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_RL Etopwq(tlam), Ebotwq(tlam) |
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_RL zd,zirrq |
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C _RL zirr |
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C _RL Etopql,Ebotql,Emidql |
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_RL Emidq,Emidwq |
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_RL Edtop(tlam),Estop(tlam) |
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CEOP |
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C Ebot = 0.0 |
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do nl = 1,tlam |
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C initialize state variables |
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Edtop(nl) = Ed(nl) |
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Estop(nl) = Es(nl) |
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C Ebot = Ebot + (Ed(nl)+Es(nl)) |
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enddo |
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c Convert to quanta: divide by Avos # to get moles quanta; then mult by |
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c 1E6 to get uM or uEin |
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do nl = 1,tlam |
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C don't include upwelling at surface |
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Ebotwq(nl) = (Edtop(nl)+Estop(nl))*WtouEins(nl) |
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enddo |
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C sum PAR range |
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Ebotq = 0.0 |
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do nl = darwin_PAR_ilamLo,darwin_PAR_ilamHi |
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Ebotq = Ebotq + Ebotwq(nl) |
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enddo |
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do k = 1,Nr |
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C Etop = Ebot |
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Etopq = Ebotq |
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zd = min(darwin_Dmax,H(k)) |
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C zirr = 0.0 |
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do nl = 1,tlam |
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Edz(nl,k) = 0.0 |
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Esz(nl,k) = 0.0 |
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Euz(nl,k) = 0.0 |
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Eutop(nl,k) = 0.0 |
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if (Edtop(nl) .ge. darwin_radmodThresh .or. |
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& Estop(nl) .ge. darwin_radmodThresh) then |
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c print*,'pre',zd,Edtop(nl),Estop(nl), |
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c & rmud,rmus,rmuu,a,bt,bb,Dmax |
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#ifdef DAR_RADTRANS_DECREASING |
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C truncation to decreasing modes a la Aas |
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call radtrans_radmod_decr( |
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I zd,Edtop(nl),Estop(nl), |
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I rmud,darwin_rmus,darwin_rmuu, |
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I a_k(k,nl),bt_k(k,nl),bb_k(k,nl),darwin_Dmax, |
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O Edz(nl,k),Esz(nl,k),Euz(nl,k),Eutop(nl,k)) |
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#else |
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C Watson Gregg's original |
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call radtrans_radmod( |
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I zd,Edtop(nl),Estop(nl), |
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I rmud,darwin_rmus,darwin_rmuu, |
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I a_k(k,nl),bt_k(k,nl),bb_k(k,nl),darwin_Dmax, |
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O Edz(nl,k),Esz(nl,k),Euz(nl,k),Eutop(nl,k)) |
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#endif |
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c print*,'radmod',Edz(nl,k),Esz(nl,k),Euz(nl,k) |
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endif |
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C cycle |
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Edtop(nl) = Edz(nl,k) |
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Estop(nl) = Esz(nl,k) |
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C zirr = zirr + (Edz(nl,k)+Esz(nl,k)+Euz(nl,k)) |
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C- enddo nl |
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enddo |
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C Ebot = zirr |
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c ANNA SPEC retrieve and pass spectral irrq |
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do nl = 1,tlam |
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Etopwq(nl) = Ebotwq(nl) |
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C add vertical components, ... |
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Ebotwq(nl)=(Edz(nl,k)+Esz(nl,k)+Euz(nl,k))*WtouEins(nl) |
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C ... interpolate ... |
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Emidwq = sqrt(Etopwq(nl)*Ebotwq(nl)) |
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C ... and convert using rmus !? |
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tirrwq(nl,k) = Emidwq*darwin_rmus |
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enddo |
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C sum PAR range |
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zirrq = 0.0 |
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do nl = darwin_PAR_ilamLo,darwin_PAR_ilamHi |
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zirrq = zirrq + Ebotwq(nl) |
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enddo |
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Ebotq = zirrq |
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C interpolate nonspectral PAR separately !? |
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Emidq = sqrt(Etopq*Ebotq) |
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tirrq(k) = Emidq*darwin_rmus !scalar irradiance |
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C- enddo k |
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enddo |
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c |
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#endif /* DAR_RADTRANS */ |
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return |
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end |
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