| 1 | MODULE lmdz_cv3_inip |
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| 2 | IMPLICIT NONE; PRIVATE |
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| 3 | PUBLIC cv3_inip |
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| 4 | CONTAINS |
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| 5 | SUBROUTINE cv3_inip |
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| 6 | ! ******************************************************************* |
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| 7 | ! * * |
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| 8 | ! CV3_INIP Input = choice of mixing probability laws * |
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| 9 | ! Output = normalized coefficients of the probability laws. * |
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| 10 | ! * * |
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| 11 | ! written by : Jean-Yves Grandpeix, 06/06/2006, 19.39.27 * |
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| 12 | ! modified by : * |
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| 13 | ! ******************************************************************* |
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| 14 | |
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| 15 | USE lmdz_print_control, ONLY: prt_level, lunout |
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| 16 | USE lmdz_abort_physic, ONLY: abort_physic |
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| 17 | ! IN: iflag_mix, gammas , alphas, betas, Fmax, scut, INOUT: qqa1 qqa2, OUT: Qcoef1max, Qcoef1max |
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| 18 | USE lmdz_yomcst2, ONLY: iflag_mix, gammas, alphas, betas, Fmax, scut, qqa1, qqa2, Qcoef1max, Qcoef2max |
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| 19 | |
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| 20 | IMPLICIT NONE |
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| 21 | |
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| 22 | !---------------------------------------------- |
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| 23 | ! Local variables : |
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| 24 | CHARACTER (LEN = 20) :: modname = 'cv3_inip' |
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| 25 | CHARACTER (LEN = 80) :: abort_message |
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| 26 | |
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| 27 | REAL :: sumcoef |
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| 28 | REAL :: sigma, aire, pdf, mu, df |
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| 29 | REAL :: ff |
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| 30 | |
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| 31 | ! -- Mixing probability distribution functions |
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| 32 | |
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| 33 | REAL qcoef1, qcoef2, qff, qfff, qmix, rmix, qmix1, rmix1, qmix2, rmix2, f |
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| 34 | |
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| 35 | qcoef1(f) = tanh(f / gammas) |
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| 36 | qcoef2(f) = (tanh(f / gammas) + gammas * log(cosh((1. - f) / gammas) / cosh(f / gammas))) |
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| 37 | qff(f) = max(min(f, 1.), 0.) |
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| 38 | qfff(f) = min(qff(f), scut) |
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| 39 | qmix1(f) = (tanh((qff(f) - fmax) / gammas) + qcoef1max) / qcoef2max |
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| 40 | rmix1(f) = (gammas * log(cosh((qff(f) - fmax) / gammas)) + qff(f) * qcoef1max) / & |
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| 41 | qcoef2max |
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| 42 | qmix2(f) = -log(1. - qfff(f)) / scut |
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| 43 | rmix2(f) = (qfff(f) + (1. - qff(f)) * log(1. - qfff(f))) / scut |
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| 44 | qmix(f) = qqa1 * qmix1(f) + qqa2 * qmix2(f) |
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| 45 | rmix(f) = qqa1 * rmix1(f) + qqa2 * rmix2(f) |
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| 46 | |
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| 47 | IF (iflag_mix>0) THEN |
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| 48 | |
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| 49 | ! -- Normalize Pdf weights |
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| 50 | sumcoef = qqa1 + qqa2 |
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| 51 | qqa1 = qqa1 / sumcoef |
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| 52 | qqa2 = qqa2 / sumcoef |
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| 53 | |
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| 54 | qcoef1max = qcoef1(fmax) |
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| 55 | qcoef2max = qcoef2(fmax) |
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| 56 | |
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| 57 | sigma = 0. |
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| 58 | aire = 0.0 |
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| 59 | pdf = 0.0 |
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| 60 | mu = 0.0 |
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| 61 | df = 0.0001 |
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| 62 | |
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| 63 | ! do ff = 0.0 + df, 1.0 - 2.*df, df |
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| 64 | ff = df |
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| 65 | DO WHILE (ff<=1.0 - 2. * df) |
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| 66 | pdf = (qmix(ff + df) - qmix(ff)) * (1. - ff) / df |
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| 67 | aire = aire + (qmix(ff + df) - qmix(ff)) * (1. - ff) |
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| 68 | mu = mu + pdf * ff * df |
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| 69 | IF (prt_level>9) WRITE (lunout, *) pdf, qmix(ff), aire, ff |
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| 70 | ff = ff + df |
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| 71 | END DO |
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| 72 | |
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| 73 | ! do ff=0.0+df,1.0 - 2.*df,df |
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| 74 | ff = df |
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| 75 | DO WHILE (ff<=1.0 - 2. * df) |
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| 76 | pdf = (qmix(ff + df) - qmix(ff)) * (1. - ff) / df |
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| 77 | sigma = sigma + pdf * (ff - mu) * (ff - mu) * df |
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| 78 | ff = ff + df |
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| 79 | END DO |
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| 80 | sigma = sqrt(sigma) |
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| 81 | |
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| 82 | IF (abs(aire - 1.0)>0.02) THEN |
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| 83 | WRITE (lunout, *) 'WARNING:: AREA OF MIXING PDF IS::', aire |
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| 84 | abort_message = '' |
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| 85 | CALL abort_physic(modname, abort_message, 1) |
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| 86 | ELSE |
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| 87 | PRINT *, 'Area, mean & std deviation are ::', aire, mu, sigma |
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| 88 | END IF |
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| 89 | END IF ! (iflag_mix .gt. 0) |
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| 90 | |
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| 91 | END SUBROUTINE cv3_inip |
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| 92 | END MODULE lmdz_cv3_inip |
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