| Directory: | ./ |
|---|---|
| File: | phys/acama_gwd_rando_m.f90 |
| Date: | 2022-01-11 19:19:34 |
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| Branches: | 204 | 222 | 91.9% |
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| 1 | ! | ||
| 2 | ! $Id: acama_gwd_rando_m.F90 3977 2021-08-25 17:24:20Z fhourdin $ | ||
| 3 | ! | ||
| 4 | module ACAMA_GWD_rando_m | ||
| 5 | |||
| 6 | implicit none | ||
| 7 | |||
| 8 | contains | ||
| 9 | |||
| 10 |
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480 | SUBROUTINE ACAMA_GWD_rando(DTIME, pp, plat, tt, uu, vv, rot, & |
| 11 |
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480 | zustr, zvstr, d_u, d_v,east_gwstress,west_gwstress) |
| 12 | |||
| 13 | ! Parametrization of the momentum flux deposition due to a discrete | ||
| 14 | ! number of gravity waves. | ||
| 15 | ! Author: F. Lott, A. de la Camara | ||
| 16 | ! July, 24th, 2014 | ||
| 17 | ! Gaussian distribution of the source, source is vorticity squared | ||
| 18 | ! Reference: de la Camara and Lott (GRL, 2015, vol 42, 2071-2078 ) | ||
| 19 | ! Lott et al (JAS, 2010, vol 67, page 157-170) | ||
| 20 | ! Lott et al (JAS, 2012, vol 69, page 2134-2151) | ||
| 21 | |||
| 22 | ! ONLINE: | ||
| 23 | use dimphy, only: klon, klev | ||
| 24 | use assert_m, only: assert | ||
| 25 | USE ioipsl_getin_p_mod, ONLY : getin_p | ||
| 26 | USE vertical_layers_mod, ONLY : presnivs | ||
| 27 | |||
| 28 | include "YOMCST.h" | ||
| 29 | include "clesphys.h" | ||
| 30 | ! OFFLINE: | ||
| 31 | ! include "dimensions.h" | ||
| 32 | ! include "dimphy.h" | ||
| 33 | !END DIFFERENCE | ||
| 34 | include "YOEGWD.h" | ||
| 35 | |||
| 36 | ! 0. DECLARATIONS: | ||
| 37 | |||
| 38 | ! 0.1 INPUTS | ||
| 39 | REAL, intent(in)::DTIME ! Time step of the Physics | ||
| 40 | REAL, intent(in):: PP(:, :) ! (KLON, KLEV) Pressure at full levels | ||
| 41 | REAL, intent(in):: ROT(:,:) ! Relative vorticity | ||
| 42 | REAL, intent(in):: TT(:, :) ! (KLON, KLEV) Temp at full levels | ||
| 43 | REAL, intent(in):: UU(:, :) ! (KLON, KLEV) Zonal wind at full levels | ||
| 44 | REAL, intent(in):: VV(:, :) ! (KLON, KLEV) Merid wind at full levels | ||
| 45 | REAL, intent(in):: PLAT(:) ! (KLON) LATITUDE | ||
| 46 | |||
| 47 | ! 0.2 OUTPUTS | ||
| 48 | REAL, intent(out):: zustr(:), zvstr(:) ! (KLON) Surface Stresses | ||
| 49 | |||
| 50 | REAL, intent(inout):: d_u(:, :), d_v(:, :) | ||
| 51 | REAL, intent(inout):: east_gwstress(:, :) ! Profile of eastward stress | ||
| 52 | REAL, intent(inout):: west_gwstress(:, :) ! Profile of westward stress | ||
| 53 | ! (KLON, KLEV) tendencies on winds | ||
| 54 | |||
| 55 | ! O.3 INTERNAL ARRAYS | ||
| 56 | 960 | REAL BVLOW(klon) ! LOW LEVEL BV FREQUENCY | |
| 57 | 960 | REAL ROTBA(KLON),CORIO(KLON) ! BAROTROPIC REL. VORTICITY AND PLANETARY | |
| 58 | 960 | REAL UZ(KLON, KLEV + 1) | |
| 59 | |||
| 60 | INTEGER II, JJ, LL | ||
| 61 | |||
| 62 | ! 0.3.0 TIME SCALE OF THE LIFE CYCLE OF THE WAVES PARAMETERIZED | ||
| 63 | |||
| 64 | REAL DELTAT | ||
| 65 | |||
| 66 | ! 0.3.1 GRAVITY-WAVES SPECIFICATIONS | ||
| 67 | |||
| 68 | INTEGER, PARAMETER:: NK = 2, NP = 2, NO = 2, NW = NK * NP * NO | ||
| 69 | INTEGER JK, JP, JO, JW | ||
| 70 | INTEGER, PARAMETER:: NA = 5 !number of realizations to get the phase speed | ||
| 71 | REAL KMIN, KMAX ! Min and Max horizontal wavenumbers | ||
| 72 | REAL CMIN, CMAX ! Min and Max absolute ph. vel. | ||
| 73 | REAL CPHA ! absolute PHASE VELOCITY frequency | ||
| 74 | 960 | REAL ZK(NW, KLON) ! Horizontal wavenumber amplitude | |
| 75 | 960 | REAL ZP(NW, KLON) ! Horizontal wavenumber angle | |
| 76 | 960 | REAL ZO(NW, KLON) ! Absolute frequency ! | |
| 77 | |||
| 78 | ! Waves Intr. freq. at the 1/2 lev surrounding the full level | ||
| 79 | 960 | REAL ZOM(NW, KLON), ZOP(NW, KLON) | |
| 80 | |||
| 81 | ! Wave EP-fluxes at the 2 semi levels surrounding the full level | ||
| 82 | 960 | REAL WWM(NW, KLON), WWP(NW, KLON) | |
| 83 | |||
| 84 | 960 | REAL RUW0(NW, KLON) ! Fluxes at launching level | |
| 85 | |||
| 86 | 960 | REAL RUWP(NW, KLON), RVWP(NW, KLON) | |
| 87 | ! Fluxes X and Y for each waves at 1/2 Levels | ||
| 88 | |||
| 89 | INTEGER LAUNCH, LTROP ! Launching altitude and tropo altitude | ||
| 90 | |||
| 91 | REAL XLAUNCH ! Controle the launching altitude | ||
| 92 | REAL XTROP ! SORT of Tropopause altitude | ||
| 93 | 960 | REAL RUW(KLON, KLEV + 1) ! Flux x at semi levels | |
| 94 | 960 | REAL RVW(KLON, KLEV + 1) ! Flux y at semi levels | |
| 95 | |||
| 96 | REAL PRMAX ! Maximum value of PREC, and for which our linear formula | ||
| 97 | ! for GWs parameterisation apply | ||
| 98 | |||
| 99 | ! 0.3.2 PARAMETERS OF WAVES DISSIPATIONS | ||
| 100 | |||
| 101 | REAL RDISS, ZOISEC ! COEFF DE DISSIPATION, SECURITY FOR INTRINSIC FREQ | ||
| 102 | REAL CORSEC ! SECURITY FOR INTRINSIC CORIOLIS | ||
| 103 | REAL RUWFRT,SATFRT | ||
| 104 | |||
| 105 | ! 0.3.3 BACKGROUND FLOW AT 1/2 LEVELS AND VERTICAL COORDINATE | ||
| 106 | |||
| 107 | REAL H0 ! Characteristic Height of the atmosphere | ||
| 108 | REAL DZ ! Characteristic depth of the source! | ||
| 109 | REAL PR, TR ! Reference Pressure and Temperature | ||
| 110 | |||
| 111 | 960 | REAL ZH(KLON, KLEV + 1) ! Log-pressure altitude | |
| 112 | |||
| 113 | 960 | REAL UH(KLON, KLEV + 1), VH(KLON, KLEV + 1) ! Winds at 1/2 levels | |
| 114 | 960 | REAL PH(KLON, KLEV + 1) ! Pressure at 1/2 levels | |
| 115 | REAL PSEC ! Security to avoid division by 0 pressure | ||
| 116 | 960 | REAL PHM1(KLON, KLEV + 1) ! 1/Press at 1/2 levels | |
| 117 | 960 | REAL BV(KLON, KLEV + 1) ! Brunt Vaisala freq. (BVF) at 1/2 levels | |
| 118 | REAL BVSEC ! Security to avoid negative BVF | ||
| 119 | |||
| 120 | 960 | REAL, DIMENSION(klev+1) ::HREF | |
| 121 | LOGICAL, SAVE :: gwd_reproductibilite_mpiomp=.true. | ||
| 122 | LOGICAL, SAVE :: firstcall = .TRUE. | ||
| 123 | !$OMP THREADPRIVATE(firstcall,gwd_reproductibilite_mpiomp) | ||
| 124 | |||
| 125 | CHARACTER (LEN=20) :: modname='acama_gwd_rando_m' | ||
| 126 | CHARACTER (LEN=80) :: abort_message | ||
| 127 | |||
| 128 | |||
| 129 | |||
| 130 |
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480 | IF (firstcall) THEN |
| 131 | ! Cle introduite pour resoudre un probleme de non reproductibilite | ||
| 132 | ! Le but est de pouvoir tester de revenir a la version precedenete | ||
| 133 | ! A eliminer rapidement | ||
| 134 | 1 | CALL getin_p('gwd_reproductibilite_mpiomp',gwd_reproductibilite_mpiomp) | |
| 135 |
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1 | IF (NW+4*(NA-1)+NA>=KLEV) THEN |
| 136 | ✗ | abort_message = 'NW+3*NA>=KLEV Probleme pour generation des ondes' | |
| 137 | ✗ | CALL abort_physic (modname,abort_message,1) | |
| 138 | ENDIF | ||
| 139 | 1 | firstcall=.false. | |
| 140 | ! CALL iophys_ini(dtime) | ||
| 141 | ENDIF | ||
| 142 | |||
| 143 | !----------------------------------------------------------------- | ||
| 144 | |||
| 145 | ! 1. INITIALISATIONS | ||
| 146 | |||
| 147 | ! 1.1 Basic parameter | ||
| 148 | |||
| 149 | ! Are provided from elsewhere (latent heat of vaporization, dry | ||
| 150 | ! gaz constant for air, gravity constant, heat capacity of dry air | ||
| 151 | ! at constant pressure, earth rotation rate, pi). | ||
| 152 | |||
| 153 | ! 1.2 Tuning parameters of V14 | ||
| 154 | |||
| 155 | ! Values for linear in rot (recommended): | ||
| 156 | ! RUWFRT=0.005 ! As RUWMAX but for frontal waves | ||
| 157 | ! SATFRT=1.00 ! As SAT but for frontal waves | ||
| 158 | ! Values when rot^2 is used | ||
| 159 | ! RUWFRT=0.02 ! As RUWMAX but for frontal waves | ||
| 160 | ! SATFRT=1.00 ! As SAT but for frontal waves | ||
| 161 | ! CMAX = 30. ! Characteristic phase speed | ||
| 162 | ! Values when rot^2*EXP(-pi*sqrt(J)) is used | ||
| 163 | ! RUWFRT=2.5 ! As RUWMAX but for frontal waves ~ N0*F0/4*DZ | ||
| 164 | ! SATFRT=0.60 ! As SAT but for frontal waves | ||
| 165 | 480 | RUWFRT=gwd_front_ruwmax | |
| 166 | 480 | SATFRT=gwd_front_sat | |
| 167 | CMAX = 50. ! Characteristic phase speed | ||
| 168 | ! Phase speed test | ||
| 169 | ! RUWFRT=0.01 | ||
| 170 | ! CMAX = 50. ! Characteristic phase speed (TEST) | ||
| 171 | ! Values when rot^2 and exp(-m^2*dz^2) are used | ||
| 172 | ! RUWFRT=0.03 ! As RUWMAX but for frontal waves | ||
| 173 | ! SATFRT=1.00 ! As SAT but for frontal waves | ||
| 174 | ! CRUCIAL PARAMETERS FOR THE WIND FILTERING | ||
| 175 | XLAUNCH=0.95 ! Parameter that control launching altitude | ||
| 176 | RDISS = 0.5 ! Diffusion parameter | ||
| 177 | |||
| 178 | ! maximum of rain for which our theory applies (in kg/m^2/s) | ||
| 179 | |||
| 180 | DZ = 1000. ! Characteristic depth of the source | ||
| 181 | XTROP=0.2 ! Parameter that control tropopause altitude | ||
| 182 | DELTAT=24.*3600. ! Time scale of the waves (first introduced in 9b) | ||
| 183 | ! DELTAT=DTIME ! No AR-1 Accumulation, OR OFFLINE | ||
| 184 | |||
| 185 | KMIN = 2.E-5 | ||
| 186 | ! minimum horizontal wavenumber (inverse of the subgrid scale resolution) | ||
| 187 | |||
| 188 | KMAX = 1.E-3 ! Max horizontal wavenumber | ||
| 189 | CMIN = 1. ! Min phase velocity | ||
| 190 | |||
| 191 | TR = 240. ! Reference Temperature | ||
| 192 | PR = 101300. ! Reference pressure | ||
| 193 | 480 | H0 = RD * TR / RG ! Characteristic vertical scale height | |
| 194 | |||
| 195 | BVSEC = 5.E-3 ! Security to avoid negative BVF | ||
| 196 | PSEC = 1.E-6 ! Security to avoid division by 0 pressure | ||
| 197 | ZOISEC = 1.E-6 ! Security FOR 0 INTRINSIC FREQ | ||
| 198 | 480 | CORSEC = ROMEGA*2.*SIN(2.*RPI/180.)! Security for CORIO | |
| 199 | |||
| 200 | ! ONLINE | ||
| 201 | call assert(klon == (/size(pp, 1), size(tt, 1), size(uu, 1), & | ||
| 202 | size(vv, 1), size(rot,1), size(zustr), size(zvstr), size(d_u, 1), & | ||
| 203 | size(d_v, 1), & | ||
| 204 | size(east_gwstress,1), size(west_gwstress,1) /), & | ||
| 205 |
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5760 | "ACAMA_GWD_RANDO klon") |
| 206 | call assert(klev == (/size(pp, 2), size(tt, 2), size(uu, 2), & | ||
| 207 | size(vv, 2), size(d_u, 2), size(d_v, 2), & | ||
| 208 | size(east_gwstress,2), size(west_gwstress,2) /), & | ||
| 209 |
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4320 | "ACAMA_GWD_RANDO klev") |
| 210 | ! END ONLINE | ||
| 211 | |||
| 212 |
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480 | IF(DELTAT < DTIME)THEN |
| 213 | ! PRINT *, 'flott_gwd_rando: deltat < dtime!' | ||
| 214 | ! STOP 1 | ||
| 215 | ✗ | abort_message=' deltat < dtime! ' | |
| 216 | ✗ | CALL abort_physic(modname,abort_message,1) | |
| 217 | ENDIF | ||
| 218 | |||
| 219 |
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480 | IF (KLEV < NW) THEN |
| 220 | ! PRINT *, 'flott_gwd_rando: you will have problem with random numbers' | ||
| 221 | ! STOP 1 | ||
| 222 | ✗ | abort_message=' you will have problem with random numbers' | |
| 223 | ✗ | CALL abort_physic(modname,abort_message,1) | |
| 224 | ENDIF | ||
| 225 | |||
| 226 | ! 2. EVALUATION OF THE BACKGROUND FLOW AT SEMI-LEVELS | ||
| 227 | |||
| 228 | ! Pressure and Inv of pressure | ||
| 229 |
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18720 | DO LL = 2, KLEV |
| 230 |
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18148800 | PH(:, LL) = EXP((LOG(PP(:, LL)) + LOG(PP(:, LL - 1))) / 2.) |
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18149280 | PHM1(:, LL) = 1. / PH(:, LL) |
| 232 | end DO | ||
| 233 | |||
| 234 |
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477600 | PH(:, KLEV + 1) = 0. |
| 235 |
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477600 | PHM1(:, KLEV + 1) = 1. / PSEC |
| 236 |
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477600 | PH(:, 1) = 2. * PP(:, 1) - PH(:, 2) |
| 237 | |||
| 238 | ! Launching altitude | ||
| 239 | |||
| 240 |
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480 | IF (gwd_reproductibilite_mpiomp) THEN |
| 241 | ! Reprend la formule qui calcule PH en fonction de PP=play | ||
| 242 |
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18720 | DO LL = 2, KLEV |
| 243 | 18720 | HREF(LL) = EXP((LOG(presnivs(LL)) + LOG(presnivs(LL - 1))) / 2.) | |
| 244 | end DO | ||
| 245 | 480 | HREF(KLEV + 1) = 0. | |
| 246 | 480 | HREF(1) = 2. * presnivs(1) - HREF(2) | |
| 247 | ELSE | ||
| 248 | ✗ | HREF(1:KLEV)=PH(KLON/2,1:KLEV) | |
| 249 | ENDIF | ||
| 250 | |||
| 251 | LAUNCH=0 | ||
| 252 | LTROP =0 | ||
| 253 |
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19200 | DO LL = 1, KLEV |
| 254 |
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19200 | IF (HREF(LL) / HREF(1) > XLAUNCH) LAUNCH = LL |
| 255 | ENDDO | ||
| 256 |
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19200 | DO LL = 1, KLEV |
| 257 |
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19200 | IF (HREF(LL) / HREF(1) > XTROP) LTROP = LL |
| 258 | ENDDO | ||
| 259 | !LAUNCH=22 ; LTROP=33 | ||
| 260 | ! print*,'LAUNCH=',LAUNCH,'LTROP=',LTROP | ||
| 261 | |||
| 262 | |||
| 263 | ! PRINT *,'LAUNCH IN ACAMARA:',LAUNCH | ||
| 264 | |||
| 265 | ! Log pressure vert. coordinate | ||
| 266 |
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19680 | DO LL = 1, KLEV + 1 |
| 267 |
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19104480 | ZH(:, LL) = H0 * LOG(PR / (PH(:, LL) + PSEC)) |
| 268 | end DO | ||
| 269 | |||
| 270 | ! BV frequency | ||
| 271 |
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18720 | DO LL = 2, KLEV |
| 272 | ! BVSEC: BV Frequency (UH USED IS AS A TEMPORARY ARRAY DOWN TO WINDS) | ||
| 273 | UH(:, LL) = 0.5 * (TT(:, LL) + TT(:, LL - 1)) & | ||
| 274 | * RD**2 / RCPD / H0**2 + (TT(:, LL) & | ||
| 275 |
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18149280 | - TT(:, LL - 1)) / (ZH(:, LL) - ZH(:, LL - 1)) * RD / H0 |
| 276 | end DO | ||
| 277 | BVLOW = 0.5 * (TT(:, LTROP )+ TT(:, LAUNCH)) & | ||
| 278 | * RD**2 / RCPD / H0**2 + (TT(:, LTROP ) & | ||
| 279 |
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477600 | - TT(:, LAUNCH))/(ZH(:, LTROP )- ZH(:, LAUNCH)) * RD / H0 |
| 280 | |||
| 281 |
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477600 | UH(:, 1) = UH(:, 2) |
| 282 |
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477600 | UH(:, KLEV + 1) = UH(:, KLEV) |
| 283 |
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477600 | BV(:, 1) = UH(:, 2) |
| 284 |
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477600 | BV(:, KLEV + 1) = UH(:, KLEV) |
| 285 | ! SMOOTHING THE BV HELPS | ||
| 286 |
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18720 | DO LL = 2, KLEV |
| 287 |
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18149280 | BV(:, LL)=(UH(:, LL+1)+2.*UH(:, LL)+UH(:, LL-1))/4. |
| 288 | end DO | ||
| 289 | |||
| 290 |
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19104480 | BV=MAX(SQRT(MAX(BV, 0.)), BVSEC) |
| 291 |
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477600 | BVLOW=MAX(SQRT(MAX(BVLOW, 0.)), BVSEC) |
| 292 | |||
| 293 | ! WINDS | ||
| 294 |
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18720 | DO LL = 2, KLEV |
| 295 |
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18148800 | UH(:, LL) = 0.5 * (UU(:, LL) + UU(:, LL - 1)) ! Zonal wind |
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18148800 | VH(:, LL) = 0.5 * (VV(:, LL) + VV(:, LL - 1)) ! Meridional wind |
| 297 | UZ(:, LL) = ABS((SQRT(UU(:, LL)**2+VV(:, LL)**2) & | ||
| 298 | - SQRT(UU(:,LL-1)**2+VV(:, LL-1)**2)) & | ||
| 299 |
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18149280 | /(ZH(:, LL)-ZH(:, LL-1)) ) |
| 300 | end DO | ||
| 301 |
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477600 | UH(:, 1) = 0. |
| 302 |
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477600 | VH(:, 1) = 0. |
| 303 |
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477600 | UH(:, KLEV + 1) = UU(:, KLEV) |
| 304 |
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477600 | VH(:, KLEV + 1) = VV(:, KLEV) |
| 305 | |||
| 306 |
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477600 | UZ(:, 1) = UZ(:, 2) |
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477600 | UZ(:, KLEV + 1) = UZ(:, KLEV) |
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19104480 | UZ(:, :) = MAX(UZ(:,:), PSEC) |
| 309 | |||
| 310 | ! BAROTROPIC VORTICITY AND INTEGRATED CORIOLIS PARAMETER | ||
| 311 | |||
| 312 |
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477600 | CORIO(:) = MAX(ROMEGA*2.*ABS(SIN(PLAT(:)*RPI/180.)),CORSEC) |
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477600 | ROTBA(:)=0. |
| 314 |
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18720 | DO LL = 1,KLEV-1 |
| 315 | !ROTBA(:) = ROTBA(:) + (ROT(:,LL)+ROT(:,LL+1))/2./RG*(PP(:,LL)-PP(:,LL+1)) | ||
| 316 | ! Introducing the complete formula (exp of Richardson number): | ||
| 317 | ROTBA(:) = ROTBA(:) + & | ||
| 318 | !((ROT(:,LL)+ROT(:,LL+1))/2.)**2 & | ||
| 319 | (CORIO(:)*TANH(ABS(ROT(:,LL)+ROT(:,LL+1))/2./CORIO(:)))**2 & | ||
| 320 | /RG*(PP(:,LL)-PP(:,LL+1)) & | ||
| 321 | * EXP(-RPI*BV(:,LL+1)/UZ(:,LL+1)) & | ||
| 322 | ! * DZ*BV(:,LL+1)/4./ABS(CORIO(:)) | ||
| 323 |
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18149280 | * DZ*BV(:,LL+1)/4./1.E-4 ! Changes after 1991 |
| 324 | !ARRET | ||
| 325 | ENDDO | ||
| 326 | ! PRINT *,'MAX ROTBA:',MAXVAL(ROTBA) | ||
| 327 | ! ROTBA(:)=(1.*ROTBA(:) & ! Testing zone | ||
| 328 | ! +0.15*CORIO(:)**2 & | ||
| 329 | ! /(COS(PLAT(:)*RPI/180.)+0.02) & | ||
| 330 | ! )*DZ*0.01/0.0001/4. ! & ! Testing zone | ||
| 331 | ! MODIF GWD4 AFTER 1985 | ||
| 332 | ! *(1.25+SIN(PLAT(:)*RPI/180.))/(1.05+SIN(PLAT(:)*RPI/180.))/1.25 | ||
| 333 | ! *1./(COS(PLAT(:)*RPI/180.)+0.02) | ||
| 334 | ! CORIO(:) = MAX(ROMEGA*2.*ABS(SIN(PLAT(:)*RPI/180.)),ZOISEC)/RG*PP(:,1) | ||
| 335 | |||
| 336 | ! 3 WAVES CHARACTERISTICS CHOSEN RANDOMLY AT THE LAUNCH ALTITUDE | ||
| 337 | |||
| 338 | ! The mod functions of weird arguments are used to produce the | ||
| 339 | ! waves characteristics in an almost stochastic way | ||
| 340 | |||
| 341 | JW = 0 | ||
| 342 |
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4320 | DO JW = 1, NW |
| 343 | ! Angle | ||
| 344 |
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3821280 | DO II = 1, KLON |
| 345 | ! Angle (0 or PI so far) | ||
| 346 | ! ZP(JW, II) = (SIGN(1., 0.5 - MOD(TT(II, JW) * 10., 1.)) + 1.) & | ||
| 347 | ! * RPI / 2. | ||
| 348 | ! Angle between 0 and pi | ||
| 349 | 3816960 | ZP(JW, II) = MOD(TT(II, JW) * 10., 1.) * RPI | |
| 350 | ! TEST WITH POSITIVE WAVES ONLY (Part I/II) | ||
| 351 | ! ZP(JW, II) = 0. | ||
| 352 | ! Horizontal wavenumber amplitude | ||
| 353 | 3816960 | ZK(JW, II) = KMIN + (KMAX - KMIN) * MOD(TT(II, JW) * 100., 1.) | |
| 354 | ! Horizontal phase speed | ||
| 355 | CPHA = 0. | ||
| 356 |
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22901760 | DO JJ = 1, NA |
| 357 | CPHA = CPHA + & | ||
| 358 | 22901760 | CMAX*2.*(MOD(TT(II, JW+4*(JJ-1)+JJ)**2, 1.)-0.5)*SQRT(3.)/SQRT(NA*1.) | |
| 359 | END DO | ||
| 360 |
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3816960 | IF (CPHA.LT.0.) THEN |
| 361 | 1908580 | CPHA = -1.*CPHA | |
| 362 | 1908580 | ZP(JW,II) = ZP(JW,II) + RPI | |
| 363 | ! TEST WITH POSITIVE WAVES ONLY (Part II/II) | ||
| 364 | ! ZP(JW, II) = 0. | ||
| 365 | ENDIF | ||
| 366 | 3816960 | CPHA = CPHA + CMIN !we dont allow |c|<1m/s | |
| 367 | ! Absolute frequency is imposed | ||
| 368 | 3816960 | ZO(JW, II) = CPHA * ZK(JW, II) | |
| 369 | ! Intrinsic frequency is imposed | ||
| 370 | ZO(JW, II) = ZO(JW, II) & | ||
| 371 | + ZK(JW, II) * COS(ZP(JW, II)) * UH(II, LAUNCH) & | ||
| 372 | 3816960 | + ZK(JW, II) * SIN(ZP(JW, II)) * VH(II, LAUNCH) | |
| 373 | ! Momentum flux at launch lev | ||
| 374 | ! LAUNCHED RANDOM WAVES WITH LOG-NORMAL AMPLITUDE | ||
| 375 | ! RIGHT IN THE SH (GWD4 after 1990) | ||
| 376 | 3816960 | RUW0(JW, II) = 0. | |
| 377 |
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22901760 | DO JJ = 1, NA |
| 378 | RUW0(JW, II) = RUW0(JW,II) + & | ||
| 379 | 22901760 | 2.*(MOD(TT(II, JW+4*(JJ-1)+JJ)**2, 1.)-0.5)*SQRT(3.)/SQRT(NA*1.) | |
| 380 | END DO | ||
| 381 | RUW0(JW, II) = RUWFRT & | ||
| 382 | * EXP(RUW0(JW,II))/1250. & ! 2 mpa at south pole | ||
| 383 | 3820800 | *((1.05+SIN(PLAT(II)*RPI/180.))/(1.01+SIN(PLAT(II)*RPI/180.))-2.05/2.01) | |
| 384 | ! RUW0(JW, II) = RUWFRT | ||
| 385 | ENDDO | ||
| 386 | end DO | ||
| 387 | |||
| 388 | ! 4. COMPUTE THE FLUXES | ||
| 389 | |||
| 390 | ! 4.0 | ||
| 391 | |||
| 392 | ! 4.1 Vertical velocity at launching altitude to ensure | ||
| 393 | ! the correct value to the imposed fluxes. | ||
| 394 | |||
| 395 |
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4320 | DO JW = 1, NW |
| 396 | |||
| 397 | ! Evaluate intrinsic frequency at launching altitude: | ||
| 398 | ZOP(JW, :) = ZO(JW, :) & | ||
| 399 | - ZK(JW, :) * COS(ZP(JW, :)) * UH(:, LAUNCH) & | ||
| 400 |
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3820800 | - ZK(JW, :) * SIN(ZP(JW, :)) * VH(:, LAUNCH) |
| 401 | |||
| 402 | ! VERSION WITH FRONTAL SOURCES | ||
| 403 | |||
| 404 | ! Momentum flux at launch level imposed by vorticity sources | ||
| 405 | |||
| 406 | ! tanh limitation for values above CORIO (inertial instability). | ||
| 407 | ! WWP(JW, :) = RUW0(JW, :) & | ||
| 408 | WWP(JW, :) = RUWFRT & | ||
| 409 | ! * (CORIO(:)*TANH(ROTBA(:)/CORIO(:)))**2 & | ||
| 410 | ! * ABS((CORIO(:)*TANH(ROTBA(:)/CORIO(:)))*CORIO(:)) & | ||
| 411 | ! CONSTANT FLUX | ||
| 412 | ! * (CORIO(:)*CORIO(:)) & | ||
| 413 | ! MODERATION BY THE DEPTH OF THE SOURCE (DZ HERE) | ||
| 414 | ! *EXP(-BVLOW(:)**2/MAX(ABS(ZOP(JW, :)),ZOISEC)**2 & | ||
| 415 | ! *ZK(JW, :)**2*DZ**2) & | ||
| 416 | ! COMPLETE FORMULA: | ||
| 417 | !* CORIO(:)**2*TANH(ROTBA(:)/CORIO(:)**2) & | ||
| 418 | * ROTBA(:) & | ||
| 419 | ! RESTORE DIMENSION OF A FLUX | ||
| 420 | ! *RD*TR/PR | ||
| 421 | ! *1. + RUW0(JW, :) | ||
| 422 |
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3820800 | *1. |
| 423 | |||
| 424 | ! Factor related to the characteristics of the waves: NONE | ||
| 425 | |||
| 426 | ! Moderation by the depth of the source (dz here): NONE | ||
| 427 | |||
| 428 | ! Put the stress in the right direction: | ||
| 429 | |||
| 430 |
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3820800 | RUWP(JW, :) = SIGN(1., ZOP(JW, :))*COS(ZP(JW, :)) * WWP(JW, :) |
| 431 |
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3821280 | RVWP(JW, :) = SIGN(1., ZOP(JW, :))*SIN(ZP(JW, :)) * WWP(JW, :) |
| 432 | |||
| 433 | end DO | ||
| 434 | |||
| 435 | ! 4.2 Uniform values below the launching altitude | ||
| 436 | |||
| 437 |
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2400 | DO LL = 1, LAUNCH |
| 438 |
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1910400 | RUW(:, LL) = 0 |
| 439 |
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1910400 | RVW(:, LL) = 0 |
| 440 |
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17760 | DO JW = 1, NW |
| 441 |
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15283200 | RUW(:, LL) = RUW(:, LL) + RUWP(JW, :) |
| 442 |
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15285120 | RVW(:, LL) = RVW(:, LL) + RVWP(JW, :) |
| 443 | end DO | ||
| 444 | end DO | ||
| 445 | |||
| 446 | ! 4.3 Loop over altitudes, with passage from one level to the next | ||
| 447 | ! done by i) conserving the EP flux, ii) dissipating a little, | ||
| 448 | ! iii) testing critical levels, and vi) testing the breaking. | ||
| 449 | |||
| 450 |
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17280 | DO LL = LAUNCH, KLEV - 1 |
| 451 | ! Warning: all the physics is here (passage from one level | ||
| 452 | ! to the next) | ||
| 453 |
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151200 | DO JW = 1, NW |
| 454 |
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133728000 | ZOM(JW, :) = ZOP(JW, :) |
| 455 |
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133728000 | WWM(JW, :) = WWP(JW, :) |
| 456 | ! Intrinsic Frequency | ||
| 457 | ZOP(JW, :) = ZO(JW, :) - ZK(JW, :) * COS(ZP(JW, :)) * UH(:, LL + 1) & | ||
| 458 |
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133728000 | - ZK(JW, :) * SIN(ZP(JW, :)) * VH(:, LL + 1) |
| 459 | |||
| 460 | ! No breaking (Eq.6) | ||
| 461 | ! Dissipation (Eq. 8) | ||
| 462 | WWP(JW, :) = WWM(JW, :) * EXP(- 4. * RDISS * PR / (PH(:, LL + 1) & | ||
| 463 | + PH(:, LL)) * ((BV(:, LL + 1) + BV(:, LL)) / 2.)**3 & | ||
| 464 | / MAX(ABS(ZOP(JW, :) + ZOM(JW, :)) / 2., ZOISEC)**4 & | ||
| 465 |
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133728000 | * ZK(JW, :)**3 * (ZH(:, LL + 1) - ZH(:, LL))) |
| 466 | |||
| 467 | ! Critical levels (forced to zero if intrinsic frequency changes sign) | ||
| 468 | ! Saturation (Eq. 12) | ||
| 469 | WWP(JW, :) = min(WWP(JW, :), MAX(0., & | ||
| 470 | SIGN(1., ZOP(JW, :) * ZOM(JW, :))) * ABS(ZOP(JW, :))**3 & | ||
| 471 | ! / BV(:, LL + 1) * EXP(- ZH(:, LL + 1) / H0) * SATFRT**2 * KMIN**2 & | ||
| 472 | / BV(:, LL + 1) * EXP(- ZH(:, LL + 1) / H0) * KMIN**2 & | ||
| 473 | ! *(SATFRT*(2.5+1.5*TANH((ZH(:,LL+1)/H0-8.)/2.)))**2 & | ||
| 474 | *SATFRT**2 & | ||
| 475 |
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133744800 | / ZK(JW, :)**4) |
| 476 | end DO | ||
| 477 | |||
| 478 | ! Evaluate EP-flux from Eq. 7 and give the right orientation to | ||
| 479 | ! the stress | ||
| 480 | |||
| 481 |
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151200 | DO JW = 1, NW |
| 482 |
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133728000 | RUWP(JW, :) = SIGN(1., ZOP(JW, :))*COS(ZP(JW, :)) * WWP(JW, :) |
| 483 |
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133744800 | RVWP(JW, :) = SIGN(1., ZOP(JW, :))*SIN(ZP(JW, :)) * WWP(JW, :) |
| 484 | end DO | ||
| 485 | |||
| 486 |
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16716000 | RUW(:, LL + 1) = 0. |
| 487 |
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16716000 | RVW(:, LL + 1) = 0. |
| 488 | |||
| 489 |
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151680 | DO JW = 1, NW |
| 490 |
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133728000 | RUW(:, LL + 1) = RUW(:, LL + 1) + RUWP(JW, :) |
| 491 |
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133728000 | RVW(:, LL + 1) = RVW(:, LL + 1) + RVWP(JW, :) |
| 492 |
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133728000 | EAST_GWSTRESS(:, LL)=EAST_GWSTRESS(:, LL)+MAX(0.,RUWP(JW,:))/FLOAT(NW) |
| 493 |
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133744800 | WEST_GWSTRESS(:, LL)=WEST_GWSTRESS(:, LL)+MIN(0.,RUWP(JW,:))/FLOAT(NW) |
| 494 | end DO | ||
| 495 | end DO | ||
| 496 | |||
| 497 | ! 5 CALCUL DES TENDANCES: | ||
| 498 | |||
| 499 | ! 5.1 Rectification des flux au sommet et dans les basses couches | ||
| 500 | |||
| 501 |
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477600 | RUW(:, KLEV + 1) = 0. |
| 502 |
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477600 | RVW(:, KLEV + 1) = 0. |
| 503 |
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477600 | RUW(:, 1) = RUW(:, LAUNCH) |
| 504 |
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477600 | RVW(:, 1) = RVW(:, LAUNCH) |
| 505 |
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2400 | DO LL = 1, LAUNCH |
| 506 |
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1910400 | RUW(:, LL) = RUW(:, LAUNCH+1) |
| 507 |
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1910400 | RVW(:, LL) = RVW(:, LAUNCH+1) |
| 508 |
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1910400 | EAST_GWSTRESS(:, LL)=EAST_GWSTRESS(:, LAUNCH) |
| 509 |
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1910880 | WEST_GWSTRESS(:, LL)=WEST_GWSTRESS(:, LAUNCH) |
| 510 | end DO | ||
| 511 | |||
| 512 | ! AR-1 RECURSIVE FORMULA (13) IN VERSION 4 | ||
| 513 |
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19200 | DO LL = 1, KLEV |
| 514 | D_U(:, LL) = (1.-DTIME/DELTAT) * D_U(:, LL) + DTIME/DELTAT/REAL(NW) * & | ||
| 515 | RG * (RUW(:, LL + 1) - RUW(:, LL)) & | ||
| 516 |
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18626400 | / (PH(:, LL + 1) - PH(:, LL)) * DTIME |
| 517 | ! NO AR1 FOR MERIDIONAL TENDENCIES | ||
| 518 | ! D_V(:, LL) = (1.-DTIME/DELTAT) * D_V(:, LL) + DTIME/DELTAT/REAL(NW) * & | ||
| 519 | D_V(:, LL) = 1./REAL(NW) * & | ||
| 520 | RG * (RVW(:, LL + 1) - RVW(:, LL)) & | ||
| 521 |
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18626880 | / (PH(:, LL + 1) - PH(:, LL)) * DTIME |
| 522 | ENDDO | ||
| 523 | |||
| 524 | ! Cosmetic: evaluation of the cumulated stress | ||
| 525 |
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477600 | ZUSTR = 0. |
| 526 |
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477600 | ZVSTR = 0. |
| 527 |
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19200 | DO LL = 1, KLEV |
| 528 |
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18626880 | ZUSTR = ZUSTR + D_U(:, LL) / RG * (PH(:, LL + 1) - PH(:, LL))/DTIME |
| 529 | ! ZVSTR = ZVSTR + D_V(:, LL) / RG * (PH(:, LL + 1) - PH(:, LL))/DTIME | ||
| 530 | ENDDO | ||
| 531 | ! COSMETICS TO VISUALIZE ROTBA | ||
| 532 |
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477600 | ZVSTR = ROTBA |
| 533 | |||
| 534 | 480 | END SUBROUTINE ACAMA_GWD_RANDO | |
| 535 | |||
| 536 | end module ACAMA_GWD_rando_m | ||
| 537 |