SUBROUTINE E1E290(G1,G2,G3,G4,G5,EMISS,FXOE1,DTE1,FXOE2,DTE2, & AVEPHI,TEMP,T) ! SUBROUTINE E1E290 COMPUTES THE EXCHANGE TERMS IN THE FLUX EQUATION ! FOR LONGWAVE RADIATION FOR ALL TERMS EXCEPT THE EXCHANGE WITH THE ! TOP OF THE ATMOSPHERE. THE METHOD IS A TABLE LOOKUP ON A PRE- ! COMPUTED E2 FUNCTION (DEFINED IN REF. (4)). ! THE E1 FUNCTION CALCULATIONS (FORMERLY DONE IN SUBROUTINE ! E1V88 COMPUTE THE FLUX RESULTING FROM THE EXCHANGE OF PHOTONS ! BETWEEN A LAYER AND THE TOP OF THE ATMOSPHERE. THE METHOD IS A ! TABLE LOOKUP ON A PRE-COMPUTED E1 FUNCTION. ! CALCULATIONS ARE DONE IN TWO FREQUENCY RANGES: ! 1) 0-560,1200-2200 CM-1 FOR Q(APPROX) ! 2) 160-560 CM-1 FOR Q(APPROX,CTS). ! MOTIVATION FOR THESE CALCULATIONS IS IN REFERENCES (1) AND (4). ! INPUTS: (COMMON BLOCKS) ! TABLE1,TABLE2,TABLE3,EM1,EM1WDE TABCOM ! AVEPHI TFCOM ! TEMP RADISW ! T KDACOM ! FXOE1,DTE1 ARGUMENT LIST ! FXOE2,DTE2 ARGUMENT LIST ! OUTPUTS: ! EMISS TFCOM ! G1,G2,G3 ARGUMENT LIST,FOR 1ST FREQ. RANGE ! G4,G5 ARGUMENT LIST,FOR 2ND FREQ. RANGE ! 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 TEMP(IDIM1:IDIM2,LP1),T(IDIM1:IDIM2,LP1) DIMENSION AVEPHI(IDIM1:IDIM2,LP1),EMISS(IDIM1:IDIM2,LP1) DIMENSION IT1(IDIM1:IDIM2,LL3P),IVAL(IDIM1:IDIM2,LP1), & FYO(IDIM1:IDIM2,LP1),DU(IDIM1:IDIM2,LP1), & WW1(IDIM1:IDIM2,LP1),WW2(IDIM1:IDIM2,LP1), & TMP3(IDIM1:IDIM2,LP1),TMP5(IDIM1:IDIM2),TMP9(IDIM1:IDIM2) !---VARIABLES EQUIVALENCED TO COMMON BLOCK VARIABLES DIMENSION T1(5040),T2(5040),T4(5040) DIMENSION EM1V(5040),EM1VW(5040) !---VARIABLES IN THE ARGUMENT LIST DIMENSION FXOE1(IDIM1:IDIM2,LP1),DTE1(IDIM1:IDIM2,LP1), & FXOE2(IDIM1:IDIM2,LP1),DTE2(IDIM1:IDIM2,LP1), & G1(IDIM1:IDIM2,LP1),G2(IDIM1:IDIM2,L),G3(IDIM1:IDIM2,LP1), & G4(IDIM1:IDIM2,LP1),G5(IDIM1:IDIM2,L) EQUIVALENCE (EM1V(1),EM1(1,1)),(EM1VW(1),EM1WDE(1,1)) 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. THE FXO INDICES HAVE BEEN ! OBTAINED IN FST88, FOR CONVENIENCE. !---THIS SUBROUTINE EVALUATES THE K=1 CASE ONLY-- !---THIS LOOP REPLACES LOOPS GOING FROMI=1,IMAX AND KP=2,LP1 PLUS ! THE SPECIAL CASE FOR THE LP1TH LAYER. DO 1322 K=1,LP1 DO 1322 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) FYO(I,K)=H28E1*FYO(I,K) IVAL(I,K)=FYO(I,K)+FXOE2(I,K) EMISS(I,K)=T1(IVAL(I,K))+DU(I,K)*T2(IVAL(I,K)) & +DTE2(I,K)*T4(IVAL(I,K)) 1322 END DO !---THE SPECIAL CASE EMISS(I,L) (LAYER KP) IS OBTAINED NOW ! BY AVERAGING THE VALUES FOR L AND LP1: DO 1344 I=MYIS,MYIE EMISS(I,L)=HAF*(EMISS(I,L)+EMISS(I,LP1)) 1344 END DO ! CALCULATIONS FOR THE KP=1 LAYER ARE NOT PERFORMED, AS ! THE RADIATION CODE ASSUMES THAT THE TOP FLUX LAYER (ABOVE THE ! TOP DATA LEVEL) IS ISOTHERMAL, AND HENCE CONTRIBUTES NOTHING ! TO THE FLUXES AT OTHER LEVELS. !***THE FOLLOWING IS THE CALCULATION FOR THE E1 FUNCTION, FORMERLY ! DONE IN SUBROUTINE E1V88. THE MOVE TO E1E288 IS DUE TO THE ! SAVINGS IN OBTAINING INDEX VALUES (THE TEMP. INDICES HAVE ! BEEN OBTAINED IN FST88, WHILE THE U-INDICES ARE OBTAINED ! IN THE E2 CALCS.,WITH K=1). ! FOR TERMS INVOLVING TOP LAYER, DU IS NOT KNOWN; IN FACT, WE ! USE INDEX 2 TO REPERSENT INDEX 1 IN PREV. CODE. THIS MEANS THAT ! THE IT1 INDEX 1 AND LLP1 HAS TO BE CALCULATED SEPARATELY. THE ! INDEX LLP2 GIVES THE SAME VALUE AS 1; IT CAN BE OMITTED. DO 208 I=MYIS,MYIE IT1(I,1)=FXOE1(I,1) WW1(I,1)=TEN-DTE1(I,1) WW2(I,1)=HP1 208 END DO DO 209 K=1,L DO 209 I=MYIS,MYIE IT1(I,K+1)=FYO(I,K)+FXOE1(I,K+1) IT1(I,LP2+K-1)=FYO(I,K)+FXOE1(I,K) WW1(I,K+1)=TEN-DTE1(I,K+1) WW2(I,K+1)=HP1-DU(I,K) 209 END DO DO 211 KP=1,L DO 211 I=MYIS,MYIE IT1(I,KP+LLP1)=FYO(I,KP)+FXOE1(I,1) 211 END DO ! G3(I,1) HAS THE SAME VALUES AS G1 (AND DID ALL ALONG) DO 230 I=MYIS,MYIE G1(I,1)=WW1(I,1)*WW2(I,1)*EM1V(IT1(I,1))+ & WW2(I,1)*DTE1(I,1)*EM1V(IT1(I,1)+1) G3(I,1)=G1(I,1) 230 END DO DO 240 K=1,L DO 240 I=MYIS,MYIE G1(I,K+1)=WW1(I,K+1)*WW2(I,K+1)*EM1V(IT1(I,K+1))+ & WW2(I,K+1)*DTE1(I,K+1)*EM1V(IT1(I,K+1)+1)+ & WW1(I,K+1)*DU(I,K)*EM1V(IT1(I,K+1)+28)+ & DTE1(I,K+1)*DU(I,K)*EM1V(IT1(I,K+1)+29) G2(I,K)=WW1(I,K)*WW2(I,K+1)*EM1V(IT1(I,K+LP2-1))+ & WW2(I,K+1)*DTE1(I,K)*EM1V(IT1(I,K+LP2-1)+1)+ & WW1(I,K)*DU(I,K)*EM1V(IT1(I,K+LP2-1)+28)+ & DTE1(I,K)*DU(I,K)*EM1V(IT1(I,K+LP2-1)+29) 240 END DO DO 241 KP=2,LP1 DO 241 I=MYIS,MYIE G3(I,KP)=WW1(I,1)*WW2(I,KP)*EM1V(IT1(I,LL+KP))+ & WW2(I,KP)*DTE1(I,1)*EM1V(IT1(I,LL+KP)+1)+ & WW1(I,1)*DU(I,KP-1)*EM1V(IT1(I,LL+KP)+28)+ & DTE1(I,1)*DU(I,KP-1)*EM1V(IT1(I,LL+KP)+29) 241 END DO DO 244 I=MYIS,MYIE G4(I,1)=WW1(I,1)*WW2(I,1)*EM1VW(IT1(I,1))+ & WW2(I,1)*DTE1(I,1)*EM1VW(IT1(I,1)+1) 244 END DO DO 242 K=1,L DO 242 I=MYIS,MYIE G4(I,K+1)=WW1(I,K+1)*WW2(I,K+1)*EM1VW(IT1(I,K+1))+ & WW2(I,K+1)*DTE1(I,K+1)*EM1VW(IT1(I,K+1)+1)+ & WW1(I,K+1)*DU(I,K)*EM1VW(IT1(I,K+1)+28)+ & DTE1(I,K+1)*DU(I,K)*EM1VW(IT1(I,K+1)+29) G5(I,K)=WW1(I,K)*WW2(I,K+1)*EM1VW(IT1(I,K+LP2-1))+ & WW2(I,K+1)*DTE1(I,K)*EM1VW(IT1(I,K+LP2-1)+1)+ & WW1(I,K)*DU(I,K)*EM1VW(IT1(I,K+LP2-1)+28)+ & DTE1(I,K)*DU(I,K)*EM1VW(IT1(I,K+LP2-1)+29) 242 END DO RETURN END SUBROUTINE E1E290