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C $Header: /u/gcmpack/MITgcm_contrib/darwin2/pkg/monod/monod_acdom.F,v 1.1 2011/04/13 18:56:25 jahn Exp $ |
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C $Name: $ |
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|
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#include "DARWIN_OPTIONS.h" |
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|
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CBOP |
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C !ROUTINE: RTWB_ACDOM |
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|
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c ANNA pass extra variables if WAVEBANDS |
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C !INTERFACE: ========================================================== |
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SUBROUTINE MONOD_ACDOM( |
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#ifdef ALLOW_CDOM |
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I cdomlocal, |
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#else |
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I P_chl, aclocal, awlocal, |
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#endif |
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O acdomlocal, |
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I myThid ) |
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|
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C !DESCRIPTION: |
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C computes CDOM from Chlorophyll |
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C |
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c ANNA I have changed this a bit from WG code |
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c ------------- this is WG code: |
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c do k = 1,km |
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c actot450 = 0.0 |
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c atot450 = 0.0 |
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c do n = 1,nchl |
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c actot450 = actot450 + P(k,n)*ac(n,nl450) |
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c enddo |
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c atot450 = aw(nl450) + actot450 |
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c do nl = 1,nlt |
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c acdom(k,nl) = 0.2*atot450*excdom(nl) |
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c enddo |
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c enddo |
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c do nl = 1,nlt |
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c write(6,*)'nl,lam,aw,ac,acdom = ',nl,lam(nl), |
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c *aw(nl),ac(1,nl),acdom(1,nl) |
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c enddo |
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c this implies P biomass is being scaled by the absorption of phytoplankton |
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c at 450nm. ie. the waveband on the main chl-a peak. |
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c so (i think) this is effectively getting the absorption by the phytoplankton |
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c In our version, since we have phyto chl we need to scale the |
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c chlorophyll normalised absorption spectra (the inputs) |
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c by phyt chl rather than phyto biomass |
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|
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C !USES: =============================================================== |
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IMPLICIT NONE |
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C === Global variables === |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "MONOD_SIZE.h" |
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#include "MONOD.h" |
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#include "SPECTRAL_SIZE.h" |
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#ifdef WAVEBANDS |
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#include "WAVEBANDS_PARAMS.h" |
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#endif |
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|
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C !INPUT PARAMETERS: =================================================== |
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C P_chl :: Chlorophyll per species and level |
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c ac :: absorption spectra for each phtyo (chl normalised) |
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c awlocal :: absoprtion spectra for water (m-1) |
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C myTime :: Current time in simulation |
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C myIter :: Current iteration number in simulation |
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C myThid :: My Thread Id number |
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|
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C !OUTPUT PARAMETERS: ================================================== |
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C acdom :: absortpion spectra for CDOM per level |
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|
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#ifdef ALLOW_CDOM |
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_RL cdomlocal(NR) |
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#else |
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_RL P_chl(npmax,Nr) |
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_RL aclocal(npmax,tlam) |
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_RL awlocal(tlam) |
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#endif |
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_RL acdomlocal(Nr,tlam) |
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C _RL myTime |
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C INTEGER myIter |
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INTEGER myThid |
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CEOP |
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|
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#ifdef WAVEBANDS |
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#ifdef DAR_CALC_ACDOM |
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|
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C !LOCAL VARIABLES: |
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C == Local variables == |
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INTEGER k, np, ilam |
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_RL actot450, atot450 |
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c params in common block |
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c nl450, excdom, |
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|
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#ifdef ALLOW_CDOM |
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c use cdom-like tracer |
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do k = 1,Nr |
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do ilam = 1,tlam |
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acdomlocal(k,ilam) = cdomcoeff*cdomlocal(k)*excdom(ilam) |
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enddo |
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enddo |
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#else |
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c ANNA moved cdom calculation from WG's light.f |
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c it's done for RADTRANS and WAVEBANDS_3D |
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do k = 1,Nr |
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actot450 = 0.0 _d 0 |
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atot450 = 0.0 _d 0 |
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do np = 1,npmax |
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actot450 = actot450 + P_chl(np,k)*aclocal(np,nl450) !nb. n,k swapped from WG |
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enddo |
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atot450 = awlocal(nl450) + actot450 |
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do ilam = 1,tlam |
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acdomlocal(k,ilam) = 0.2 _d 0 * atot450*excdom(ilam) |
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enddo |
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enddo |
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c do nl = 1,tlam |
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c write(6,*)'nl,lam,aw,ac,acdom = ',nl,lam(nl), |
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c *aw(nl),ac(1,nl),acdom(1,nl) |
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c enddo |
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c ANNA cdom end |
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#endif |
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|
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#endif /* DAR_CALC_ACDOM */ |
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#endif /* WAVEBANDS */ |
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|
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RETURN |
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END |
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