SUBROUTINE E2SPEC(EMISS,AVEPHI,FXOSP,DTSP) ! SUBROUTINE E2SPEC COMPUTES THE EXCHANGE TERMS IN THE FLUX EQUATION ! FOR LONGWAVE RADIATION FOR 2 TERMS USED FOR NEARBY LAYER COMPU- ! TATIONS. THE METHOD IS A TABLE LOOKUP ON A PRE- ! COMPUTED E2 FUNCTION (DEFINED IN REF. (4)). ! CALCULATIONS ARE DONE IN THE FREQUENCY RANGE: ! 0-560,1200-2200 CM-1 ! MOTIVATION FOR THESE CALCULATIONS IS IN REFERENCES (1) AND (4). ! INPUTS: (COMMON BLOCKS) ! TABLE1,TABLE2,TABLE3, TABCOM ! AVEPHI TFCOM ! FXOSP,DTSP ARGUMENT LIST ! OUTPUTS: ! EMISS TFCOM ! CALLED BY : FST88 ! CALLS : COMMON/PHYCON/AMOLWT,CSUBP,DIFFCTR,G,GRAVDR,O3DIFCTR,P0, & P0XZP2,P0XZP8,P0X2,RADCON,RGAS,RGASSP,SECPDA COMMON/PHYCON/RATCO2MW,RATH2OMW COMMON/PHYCON/RADCON1 COMMON/PHYCON/GINV,P0INV,GP0INV COMMON/HCON/HUNDRED,HNINETY,SIXTY,FIFTY,TEN,EIGHT,FIVE, & FOUR,THREE,TWO,ONE,HAF,QUARTR,ZERO COMMON/HCON/H83E26,H71E26,H1E15,H1E13,H1E11,H1E8,H4E5, & H165E5,H5725E4,H488E4,H1E4,H24E3,H20788E3, & H2075E3,H1224E3,H5E2,H3082E2,H3E2,H2945E2, & H23E2,H15E2,H35E1,H3P6,H181E1,H18E1,H2P9,H2P8, & H2P5,H1P8,H1P4387,H1P4,H1P25892,HP8,HP518, & HP369,HP1 COMMON/HCON/H44871M2,H559M3,H1M3,H987M4,H285M4,H1M4, & H6938M5,H394M5,H37412M5,H1439M5,H128M5,H1M5, & H7M6,H4999M6,H25452M6,H1M6,H391M7,H1174M7, & H8725M8,H327M8,H257M8,H1M8,H23M10,H14M10, & H11M10,H1M10,H83M11,H82M11,H8M11,H77M11, & H72M11,H53M11,H48M11,H44M11,H42M11,H37M11, & H35M11,H32M11,H3M11,H28M11,H24M11,H23M11, & H2M11,H18M11,H15M11,H14M11,H114M11,H11M11, & H1M11,H96M12,H93M12,H77M12,H74M12,H65M12, & H62M12,H6M12,H45M12,H44M12,H4M12,H38M12, & H37M12,H3M12,H29M12,H28M12,H24M12,H21M12, & H16M12,H14M12,H12M12,H8M13,H46M13,H36M13, & H135M13,H12M13,H1M13,H3M14,H15M14,H14M14, & H1M17,H1M18,H1M19,H1M20,H1M21,H1M22,H1M23, & H1M24,H26M30,H14M30,H25M31,H21M31,H12M31, & H9M32,H55M32,H45M32,H4M33,H62M34,H1M60 COMMON/HCON/HMP575,HM13EZ,HM19EZ,HM1E1,HM181E1,HM1E2 COMMON/HCON/H1E6,H2E6,H1M2,HMP66667,HM6666M2,HP166666, & H41666M2,HMP5,HM2M2,H29316E2,H1226E1,H3116E1, & H9P94,HP6,H625M2,HP228,HP60241,HM1797E1, & H8121E1,H2E2,HM1EZ,H26E2,H44194M2,H1P41819 COMMON/HCON/HP219,HP144,HP816,H69766E5,H235M3,HP26, & H129M2,H75826M4,H1P082,HP805,H1386E2, & H658M2,H1036E2,H2118M2,H42M2,H323M4, & H67390E2,HP3795,HP5048,H102M5,H451M6 COMMON/HCON/H16E1,HM161E1,H161E1,H3M3,H101M16, & HM1597E1,H25E2,HP118666,H15M5,H3P5,H18E3, & H6P08108,HMP805,HP602409,HP526315, & H28571M2,H1M16 COMMON/HCON/H3M4 COMMON/HCON/HM8E1 COMMON/HCON/H28E1 !----------------------------------------------------------------------- INCLUDE "parmeta.f90" INCLUDE "mpp.h" #include "sp.h" !----------------------------------------------------------------------- ! PARAMETER SETTINGS FOR THE LONGWAVE AND SHORTWAVE RADIATION CODE: ! IMAX = NO. POINTS ALONG THE LAT. CIRCLE USED IN CALCS. ! L = NO. VERTICAL LEVELS (ALSO LAYERS) IN MODEL !***NOTE: THE USER NORMALLY WILL MODIFY ONLY THE IMAX AND L PARAMETERS ! NBLW = NO. FREQ. BANDS FOR APPROX COMPUTATIONS. SEE ! BANDTA FOR DEFINITION ! NBLX = NO. FREQ BANDS FOR APPROX CTS COMPUTATIONS ! NBLY = NO. FREQ. BANDS FOR EXACT CTS COMPUTATIONS. SEE ! BDCOMB FOR DEFINITION ! INLTE = NO. LEVELS USED FOR NLTE CALCS. ! NNLTE = INDEX NO. OF FREQ. BAND IN NLTE CALCS. ! NB,KO2 ARE SHORTWAVE PARAMETERS; OTHER QUANTITIES ARE DERIVED ! FROM THE ABOVE PARAMETERS. PARAMETER (L=LM) PARAMETER (IMAX=IM,NCOL=IMAX) PARAMETER (NBLW=163,NBLX=47,NBLY=15) PARAMETER (NBLM=NBLY-1) PARAMETER (LP1=L+1,LP2=L+2,LP3=L+3) PARAMETER (LM1=L-1,LM2=L-2,LM3=L-3) PARAMETER (LL=2*L,LLP1=LL+1,LLP2=LL+2,LLP3=LL+3) PARAMETER (LLM1=LL-1,LLM2=LL-2,LLM3=LL-3) PARAMETER (LP1M=LP1*LP1,LP1M1=LP1M-1) PARAMETER (LP1V=LP1*(1+2*L/2)) PARAMETER (LP121=LP1*NBLY) PARAMETER (LL3P=3*L+2) PARAMETER (NB=12) PARAMETER (INLTE=3,INLTEP=INLTE+1,NNLTE=56) PARAMETER (LP1I=IMAX*LP1,LLP1I=IMAX*LLP1,LL3PI=IMAX*LL3P) PARAMETER (NB1=NB-1) PARAMETER (KO2=12) PARAMETER (KO21=KO2+1,KO2M=KO2-1) ! PARAMETER SETTINGS FOR THE LONGWAVE AND SHORTWAVE RADIATION CODE: ! IMAX = NO. POINTS SENT TO RADFS ! L = NO. VERTICAL LEVELS (ALSO LAYERS) IN MODEL !***NOTE: THE USER NORMALLY WILL MODIFY ONLY THE IMAX AND L PARAMETERS ! NBLW = NO. FREQ. BANDS FOR APPROX COMPUTATIONS. SEE ! BANDTA FOR DEFINITION ! NBLX = NO. FREQ BANDS FOR APPROX CTS COMPUTATIONS ! NBLY = NO. FREQ. BANDS FOR EXACT CTS COMPUTATIONS. SEE ! BDCOMB FOR DEFINITION ! INLTE = NO. LEVELS USED FOR NLTE CALCS. ! NNLTE = INDEX NO. OF FREQ. BAND IN NLTE CALCS. ! NB,KO2 ARE SHORTWAVE PARAMETERS; OTHER QUANTITIES ARE DERIVED ! FROM THE ABOVE PARAMETERS. ! COMMON BLOCK TABCOM CONTAINS QUANTITIES PRECOMPUTED IN SUBROUTINE ! TABLE FOR USE IN THE LONGWAVE RADIATION PROGRAM: ! EM1 = E1 FUNCTION, EVALUATED OVER THE 0-560 AND ! 1200-2200 CM-1 INTERVALS ! EM1WDE = E1 FUNCTION, EVALUATED OVER THE 160-560 CM-1 ! INTERVAL ! TABLE1 = E2 FUNCTION, EVALUATED OVER THE 0-560 AND ! 1200-2200 CM-1 INTERVALS ! TABLE2 = TEMPERATURE DERIVATIVE OF TABLE1 ! TABLE3 = MASS DERIVATIVE OF TABLE1 ! EM3 = E3 FUNCTION, EVALUATED OVER THE 0-560 AND ! 1200-2200 CM-1 INTERVALS ! SOURCE = PLANCK FUNCTION, EVALUATED AT SPECIFIED TEMPS. FOR ! BANDS USED IN CTS CALCULATIONS ! DSRCE = TEMPERATURE DERIVATIVE OF SOURCE ! IND = INDEX, WITH VALUE IND(I)=I. USED IN FST88 ! INDX2 = INDEX VALUES USED IN OBTAINING "LOWER TRIANGLE" ! ELEMENTS OF AVEPHI,ETC.,IN FST88 ! KMAXV = INDEX VALUES USED IN OBTAINING "UPPER TRIANGLE" ! ELEMENTS OF AVEPHI,ETC.,IN FST88 ! KMAXVM = KMAXV(L),USED FOR DO LOOP INDICES COMMON / TABCOM / IND(IMAX),INDX2(LP1V),KMAXV(LP1), & KMAXVM COMMON/TABCOM/EM1(28,180),EM1WDE(28,180),TABLE1(28,180), & TABLE2(28,180),TABLE3(28,180),EM3(28,180),SOURCE(28,NBLY), & DSRCE(28,NBLY) DIMENSION AVEPHI(IDIM1:IDIM2,LP1),EMISS(IDIM1:IDIM2,LP1) DIMENSION IVAL(IDIM1:IDIM2,LP1), & FYO(IDIM1:IDIM2,LP1),DU(IDIM1:IDIM2,LP1), & TMP3(IDIM1:IDIM2,LP1) !---VARIABLES EQUIVALENCED TO COMMON BLOCK VARIABLES DIMENSION T1(5040),T2(5040),T4(5040) !---VARIABLES IN THE ARGUMENT LIST DIMENSION FXOSP(IDIM1:IDIM2,2),DTSP(IDIM1:IDIM2,2) EQUIVALENCE (T1(1),TABLE1(1,1)),(T2(1),TABLE2(1,1)), & (T4(1),TABLE3(1,1)) !---FIRST WE OBTAIN THE EMISSIVITIES AS A FUNCTION OF TEMPERATURE ! (INDEX FXO) AND WATER AMOUNT (INDEX FYO). THIS PART OF THE CODE ! THUS GENERATES THE E2 FUNCTION. DO 132 K=1,2 DO 132 I=MYIS,MYIE TMP3(I,K)=LOG10(AVEPHI(I,K))+H16E1 FYO(I,K)=AINT(TMP3(I,K)*TEN) DU(I,K)=TMP3(I,K)-HP1*FYO(I,K) IVAL(I,K)=H28E1*FYO(I,K)+FXOSP(I,K) EMISS(I,K)=T1(IVAL(I,K))+DU(I,K)*T2(IVAL(I,K))+ & DTSP(I,K)*T4(IVAL(I,K)) 132 END DO RETURN END SUBROUTINE E2SPEC