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Changing Adiku to NAPESHM #465

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Changing Adiku to NAPESHM #465

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58b1208
Changing Adiku to NAPESHM
mathersc Jan 6, 2025
9b2a3aa
Change spacing on NAPESHM line
mathersc Jan 6, 2025
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9 changes: 6 additions & 3 deletions Soil/CENTURY_OrganicMatter/SOMINIT_c.for
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Original file line number Diff line number Diff line change
Expand Up @@ -951,12 +951,15 @@
! ************************************************************
IF (SOM3FRAC(L) < 0.) THEN
IF (SOM_TOT(L) > 1.E-6) THEN
! Adiku equation
StableC = 0.15 * (CLAY(L) + SILT(L)) + 0.69 !g/kg
StableC = StableC / 10. !g/100g
! Adiku equation
! StableC = 0.15 * (CLAY(L) + SILT(L)) + 0.69 !g/kg
! StableC = StableC / 10. !g/100g
! Gargiulo's regression
! y = 0.0093x + 0.1829
! StableC = 0.0093 * (CLAY(L) + SILT(L)) + 0.1829 !g/100g
! Changing to the NAPESHM equation
StableC = 0.0053 * (CLAY(L) + SILT(L)) + 0.41 !g/kg
StableC = StableC / 10. !g/100g
SOM3FRAC(L) = StableC / SOM_TOT(L)
Method(L) = 'Regression eqn'
ELSE
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4 changes: 3 additions & 1 deletion Soil/SoilUtilities/SOILDYN.for
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Expand Up @@ -699,7 +699,9 @@ C Initialize curve number (according to J.T. Ritchie) 1-JUL-97 BDB
ENDIF
ENDIF

OC(L) = (0.15 * (CLAY(L) + SILT(L)) + 0.69) / 10. !g/100g
! OC(L) = (0.15 * (CLAY(L) + SILT(L)) + 0.69) / 10. !g/100g
! Making change based on NAPESHM equation [CM] 1/6/25
OC(L) = (0.0053 * (CLAY(L) + SILT(L)) + 0.41) / 10. !g/100g
NMSG = NMSG+1
WRITE(MSG(NMSG),'(I5,I6,2F6.1,F6.2," (estimated)")')
& L, NINT(DS(L)), CLAY(L), SILT(L), OC(L)
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