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module lw_m |
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IMPLICIT none |
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contains |
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SUBROUTINE LW(PPMB, PDP, PDT0, PEMIS, PTL, PTAVE, PWV, POZON, PAER, PCLDLD, & |
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PCLDLU, PVIEW, PCOLR, PCOLR0, PTOPLW, PSOLLW, PTOPLW0, PSOLLW0, & |
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psollwdown, plwup, plwdn, plwup0, plwdn0) |
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use lwbv_m, only: lwbv |
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use LWU_m, only: LWU |
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USE raddim, ONLY: kdlon, kflev |
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USE raddimlw, ONLY: nua |
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USE suphec_m, ONLY: md, rcpd, rday, rg, rmo3 |
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! Method. |
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! 1. Computes the pressure and temperature weighted amounts of |
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! absorbers. |
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! 2. Computes the Planck functions on the interfaces and the |
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! gradient of Planck functions in the layers. |
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! 3. Performs the vertical integration distinguishing the |
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! contributions of the adjacent and distant layers and those from |
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! the boundaries. |
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! 4. Computes the clear-sky downward and upward emissivities. |
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! 5. Introduces the effects of the clouds on the fluxes. |
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! Reference: see radiation part of ECMWF documentation of the IFS. |
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! Author: |
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! Jean-Jacques Morcrette ECMWF |
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! Original : July 14th, 1989 |
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DOUBLE PRECISION PCLDLD(KDLON, KFLEV) ! DOWNWARD EFFECTIVE CLOUD COVER |
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DOUBLE PRECISION PCLDLU(KDLON, KFLEV) ! UPWARD EFFECTIVE CLOUD COVER |
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DOUBLE PRECISION PDP(KDLON, KFLEV) ! LAYER PRESSURE THICKNESS (Pa) |
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DOUBLE PRECISION PDT0(KDLON) ! SURFACE TEMPERATURE DISCONTINUITY (K) |
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DOUBLE PRECISION PEMIS(KDLON) ! SURFACE EMISSIVITY |
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DOUBLE PRECISION PPMB(KDLON, KFLEV+1) ! HALF LEVEL PRESSURE (mb) |
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DOUBLE PRECISION POZON(KDLON, KFLEV) ! O3 CONCENTRATION (kg/kg) |
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DOUBLE PRECISION PTL(KDLON, KFLEV+1) ! HALF LEVEL TEMPERATURE (K) |
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DOUBLE PRECISION PAER(KDLON, KFLEV, 5) ! OPTICAL THICKNESS OF THE AEROSOLS |
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DOUBLE PRECISION PTAVE(KDLON, KFLEV) ! LAYER TEMPERATURE (K) |
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DOUBLE PRECISION PVIEW(KDLON) ! COSECANT OF VIEWING ANGLE |
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DOUBLE PRECISION PWV(KDLON, KFLEV) ! SPECIFIC HUMIDITY (kg/kg) |
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DOUBLE PRECISION PCOLR(KDLON, KFLEV) ! LONG-WAVE TENDENCY (K/day) |
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DOUBLE PRECISION PCOLR0(KDLON, KFLEV) ! LONG-WAVE TENDENCY (K/day) clear-sky |
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DOUBLE PRECISION PTOPLW(KDLON) ! LONGWAVE FLUX AT T.O.A. |
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DOUBLE PRECISION PSOLLW(KDLON) ! LONGWAVE FLUX AT SURFACE |
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DOUBLE PRECISION PTOPLW0(KDLON) ! LONGWAVE FLUX AT T.O.A. (CLEAR-SKY) |
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DOUBLE PRECISION PSOLLW0(KDLON) ! LONGWAVE FLUX AT SURFACE (CLEAR-SKY) |
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! Rajout LF |
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double precision psollwdown(kdlon) ! LONGWAVE downwards flux at surface |
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!IM |
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DOUBLE PRECISION plwup(KDLON, KFLEV+1) ! LW up total sky |
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DOUBLE PRECISION plwup0(KDLON, KFLEV+1) ! LW up clear sky |
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DOUBLE PRECISION plwdn(KDLON, KFLEV+1) ! LW down total sky |
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DOUBLE PRECISION plwdn0(KDLON, KFLEV+1) ! LW down clear sky |
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DOUBLE PRECISION ZABCU(KDLON, NUA, 3*KFLEV+1) |
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DOUBLE PRECISION ZOZ(KDLON, KFLEV) |
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DOUBLE PRECISION, save:: ZFLUX(KDLON, 2, KFLEV+1) |
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! RADIATIVE FLUXES (1:up; 2:down) |
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DOUBLE PRECISION, save:: ZFLUC(KDLON, 2, KFLEV+1) |
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! CLEAR-SKY RADIATIVE FLUXES |
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! Intermediate variables: |
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DOUBLE PRECISION, save:: ZBINT(KDLON, KFLEV+1) |
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DOUBLE PRECISION, save:: ZBSUI(KDLON) |
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DOUBLE PRECISION, save:: ZCTS(KDLON, KFLEV) |
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DOUBLE PRECISION, save:: ZCNTRB(KDLON, KFLEV+1, KFLEV+1) |
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INTEGER ilim, i, k, kpl1 |
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INTEGER, PARAMETER:: lw0pas = 1 ! Every lw0pas steps, clear-sky is done |
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INTEGER, PARAMETER:: lwpas = 1 ! Every lwpas steps, cloudy-sky is done |
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! In general, lw0pas and lwpas should be 1 |
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INTEGER:: itaplw0 = 0, itaplw = 0 |
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! ------------------------------------------------------------------ |
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IF (MOD(itaplw0, lw0pas) == 0) THEN |
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DO k = 1, KFLEV |
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DO i = 1, KDLON |
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! convertir ozone de kg/kg en pa (modif MPL 100505) |
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ZOZ(i, k) = POZON(i, k)*PDP(i, k) * MD/RMO3 |
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ENDDO |
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ENDDO |
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CALL LWU(PAER, PDP, PPMB, ZOZ, PTAVE, PVIEW, PWV, ZABCU) |
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CALL LWBV(ILIM, PDT0, PEMIS, PPMB, PTL, PTAVE, ZABCU, & |
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ZFLUC, ZBINT, ZBSUI, ZCTS, ZCNTRB) |
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itaplw0 = 0 |
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ENDIF |
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itaplw0 = itaplw0 + 1 |
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IF (MOD(itaplw, lwpas) == 0) THEN |
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CALL LWC(ILIM, PCLDLD, PCLDLU, PEMIS, & |
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ZFLUC, ZBINT, ZBSUI, ZCTS, ZCNTRB, & |
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ZFLUX) |
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itaplw = 0 |
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ENDIF |
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itaplw = itaplw + 1 |
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DO k = 1, KFLEV |
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kpl1 = k+1 |
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DO i = 1, KDLON |
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PCOLR(i, k) = ZFLUX(i, 1, kpl1)+ZFLUX(i, 2, kpl1) & |
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- ZFLUX(i, 1, k)- ZFLUX(i, 2, k) |
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PCOLR(i, k) = PCOLR(i, k) * RDAY*RG/RCPD / PDP(i, k) |
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PCOLR0(i, k) = ZFLUC(i, 1, kpl1)+ZFLUC(i, 2, kpl1) & |
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- ZFLUC(i, 1, k)- ZFLUC(i, 2, k) |
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PCOLR0(i, k) = PCOLR0(i, k) * RDAY*RG/RCPD / PDP(i, k) |
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ENDDO |
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ENDDO |
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DO i = 1, KDLON |
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PSOLLW(i) = -ZFLUX(i, 1, 1)-ZFLUX(i, 2, 1) |
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PTOPLW(i) = ZFLUX(i, 1, KFLEV+1) + ZFLUX(i, 2, KFLEV+1) |
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PSOLLW0(i) = -ZFLUC(i, 1, 1)-ZFLUC(i, 2, 1) |
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PTOPLW0(i) = ZFLUC(i, 1, KFLEV+1) + ZFLUC(i, 2, KFLEV+1) |
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psollwdown(i) = -ZFLUX(i, 2, 1) |
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!IM attention aux signes !; LWtop >0, LWdn < 0 |
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DO k = 1, KFLEV+1 |
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plwup(i, k) = ZFLUX(i, 1, k) |
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plwup0(i, k) = ZFLUC(i, 1, k) |
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plwdn(i, k) = ZFLUX(i, 2, k) |
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plwdn0(i, k) = ZFLUC(i, 2, k) |
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ENDDO |
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ENDDO |
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END SUBROUTINE LW |
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end module lw_m |
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