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R5tap.f
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!== last modified 4-9-2002
SUBROUTINE R5TAP(VOLEQ,DBHOB,HTTOT,HT2,D2,errflg)
C (TAPEQU-INT DBHOB-R HTTOT-R HT2-R D2-R)
C
CHARACTER*10 VOLEQ
REAL DBHOB, HTTOT, HT2, D2, DM
REAL*8 R5WKC(5,9), R5WKB(2,9)
REAL*8 DBH, TOTHT, HTUP, DIBCOR
REAL*8 TERM1, TERM2, TERM3, TERM4
REAL*8 E
PARAMETER(E=2.7182818284)
INTEGER SP,errflg
C
C COFFICIENTS FOR WENSEL AND KRUMLAND MODEL (C1,C2,C3,C4,C5)
C DOUGLAS FIR (1)
DATA ((R5WKC(I,J),I=1,5),J=1,9)
> /0.84292,0.97062,-0.38163,-0.0074002,0.0,
C PONDEROSA PINE (2)
> 0.87278,1.26066,-1.91214,0.020445,0.0,
C SUGAR PINE (3)
> 0.90051,0.91588,-0.92964,0.0077119,-0.0011019,
C WHITE FIR (4)
> 0.86039,1.45196,-2.42273,-0.15848,0.036947,
C RED FIR (5)
> 0.87927,0.91350,-0.56617,-0.014480,0.0037262,
C INCENSE CEDAR (6)
> 1.0,0.31550,-0.34316,0.0,-0.00039283,
C JEFFERY PINE (7)
> 0.82932,1.50831,-4.08016,0.047053,0.0,
C LODGEPOLE PINE (8)
> 1.0,0.84257,-0.98434,0.0,0.0,
C REDWOOD (9)
> 0.955,0.387,-0.362,-0.00581,0.00122/
C
C COFFICIENTS FOR WENSEL AND KRUMLAND MODEL (B1,B2)
C
C DOUGLAS FIR (1)
DATA ((R5WKB(I,J),I=1,2),J=1,9)
> / 0.1420, 0.04302,
C PONDEROSA PINE (2)
> 0.1031, 0.03068,
C SUGAR PINE (3)
> 0.0743, 0.02936,
C WHITE FIR (4)
> 0.0844, 0.03320,
C RED FIR (5)
> 0.1105, 0.05061,
C INCENSE CEDAR (6)
> 0.1177, 0.03894,
C JEFFERY PINE (7)
> 0.1472, 0.03880,
C LODGEPOLE PINE (8)
> 0.0147, 0.03223,
C REDWOOD (9)
> 0.153, 0.035/
C
C
C ############################################################
C THE SECTION BETWEEN THE LINES OF "###" SHOULD NORMALLY BE
C COMMENTED OUT AS IT IS ONLY NECESSARY WHEN CHECKING COEFFICENTS
C
C
C IF (TNIRP .EQ. 'YES') THEN
C NEWPG = CHAR(12)
C WRITE (2,5) NEWPG
C 5 FORMAT(A1)
C WRITE (2,10)
C 10 FORMAT(T20,'WENSEL AND KRUMLAND PROFILE MODEL COEFFICENTS',
C > ' DEVELOPED FOR REGION FIVE',/,T40,'C1',T55,'C2',T70,
C > 'C3',T85,'C4',T100,'C5',T115,'B1',T130,'B2')
C WRITE (2,15) ((R5WKC(I,J),I=1,5),(R5WKB(I,J),I=1,2),
C > J=1,6)
C 15 FORMAT (' DOUGLAS FIR ' ,T30,6(F15.6),/,
C > ' PONDEROSA PINE ' ,T30,7(F15.6),/,
C > ' SUGAR PINE ' ,T30,7(F15.6),/,
C > ' WHITE FIR ' ,T30,7(F15.6),/,
C > ' RED FIR ' ,T30,7(F15.6),/,
C > ' INCENSE CEDAR ' ,T30,7(F15.6),/,
C
C TNIRP = 'NO '
C ENDIF
C #############################################################
C
C *************************************************************
C THIS IS THE START OF THE MAIN LOGIC
C *************************************************************
C
C CONVERT VALUES TO DOUBLE PRECISION FOR CACULATIONS
DBH = DBHOB
TOTHT = HTTOT
HTUP = HT2
DM = 0.0
IF(VOLEQ(8:10).EQ.'202')THEN
SP = 1
ELSEIF(VOLEQ(8:10).EQ.'122')THEN
SP = 2
ELSEIF(VOLEQ(8:10).EQ.'117')THEN
SP = 3
ELSEIF(VOLEQ(8:10).EQ.'015')THEN
SP = 4
ELSEIF(VOLEQ(8:10).EQ.'020')THEN
SP = 5
ELSEIF(VOLEQ(8:10).EQ.'081')THEN
SP = 6
ELSEIF(VOLEQ(8:10).EQ.'116')THEN
SP = 7
ELSEIF(VOLEQ(8:10).EQ.'108')THEN
SP = 8
ELSEIF(VOLEQ(8:10).EQ.'211')THEN
SP = 9
else
errflg = 1
d2 = 0
return
ENDIF
C
C WENSEL AND KRUMLAND PORTION TO CALCULATE UPPER STEM DIB *****
C
IF (HTUP .GT. TOTHT) then
d2 = 0.0
return
c HTUP = TOTHT
endif
IF (HTUP.GE.4.499)THEN
TERM1 = R5WKC(1,SP)
TERM2 = R5WKC(3,SP)+R5WKC(4,SP)*(DBH)+R5WKC(5,SP)*(TOTHT)
IF (SP.EQ.4.AND.TERM2.GT.-1.0) TERM2=-1.0
TERM3 = ((HTUP-1)/(TOTHT-1))**R5WKC(2,SP)
TERM4 = LOG(1-TERM3*(1-EXP(R5WKC(1,SP)/TERM2-DM/(DBH*TERM2))))
DIBCOR = DBH * (TERM1 - TERM2 * TERM4)
C
C STUMP PORTION **********************************************
C
ELSE
TERM1 = (1-R5WKB(1,SP))*DBH
TERM2 = EXP(R5WKB(2,SP)*(4.5-HTUP))
DIBCOR = TERM1*TERM2
ENDIF
D2 = DIBCOR
C
C*****************************************************************
C THIS IS THE END OF THE MAIN LOGIC
C*****************************************************************
C
C
RETURN
END