| 1 | MODULE ice |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE ice *** |
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| 4 | !! Sea Ice physics: diagnostics variables of ice defined in memory |
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| 5 | !!===================================================================== |
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| 6 | #if defined key_ice_lim |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | !! 'key_ice_lim' : LIM sea-ice model |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | !! History : |
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| 11 | !! 2.0 ! 03-08 (C. Ethe) F90: Free form and module |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | !! LIM 2.0, UCL-LODYC-IPSL (2002) |
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| 14 | !!---------------------------------------------------------------------- |
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| 15 | !! * Modules used |
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| 16 | USE par_ice ! LIM sea-ice parameters |
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| 17 | |
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| 18 | IMPLICIT NONE |
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| 19 | PRIVATE |
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| 20 | |
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| 21 | !! * Share Module variables |
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| 22 | INTEGER , PUBLIC :: & !!: ** ice-dynamic namelist (namicedyn) ** |
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| 23 | nbiter = 1 , & !: number of sub-time steps for relaxation |
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| 24 | nbitdr = 250 !: maximum number of iterations for relaxation |
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| 25 | |
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| 26 | REAL(wp), PUBLIC :: & !!: ** ice-dynamic namelist (namicedyn) ** |
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| 27 | epsd = 1.0e-20, & !: tolerance parameter for dynamic |
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| 28 | alpha = 0.5 , & !: coefficient for semi-implicit coriolis |
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| 29 | dm = 0.6e+03, & !: diffusion constant for dynamics |
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| 30 | om = 0.5 , & !: relaxation constant |
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| 31 | resl = 5.0e-05, & !: maximum value for the residual of relaxation |
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| 32 | cw = 5.0e-03, & !: drag coefficient for oceanic stress |
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| 33 | angvg = 0.0 , & !: turning angle for oceanic stress |
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| 34 | pstar = 1.0e+04, & !: first bulk-rheology parameter |
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| 35 | c_rhg = 20.0 , & !: second bulk-rhelogy parameter |
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| 36 | etamn = 0.0e+07, & !: minimun value for viscosity |
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| 37 | creepl = 2.0e-08, & !: creep limit |
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| 38 | ecc = 2.0 , & !: eccentricity of the elliptical yield curve |
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| 39 | ahi0 = 350.e0 !: sea-ice hor. eddy diffusivity coeff. (m2/s) |
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| 40 | |
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| 41 | REAL(wp), PUBLIC :: & !: |
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| 42 | usecc2 , & !: = 1.0 / ( ecc * ecc ) |
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| 43 | rhoco , & !: = rau0 * cw |
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| 44 | sangvg, cangvg , & !: sin and cos of the turning angle for ocean stress |
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| 45 | pstarh !: pstar / 2.0 |
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| 46 | |
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| 47 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: & !: |
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| 48 | u_oce, v_oce, & !: surface ocean velocity used in ice dynamics |
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| 49 | ahiu , ahiv , & !: hor. diffusivity coeff. at ocean U- and V-points (m2/s) |
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| 50 | pahu , pahv , & !: ice hor. eddy diffusivity coef. at ocean U- and V-points |
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| 51 | hsnm , hicm , & !: mean snow and ice thicknesses |
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| 52 | ust2s !: friction velocity |
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| 53 | |
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| 54 | |
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| 55 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: & !: |
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| 56 | firic , & !: IR flux over the ice (only used for outputs) |
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| 57 | fcsic , & !: Sensible heat flux over the ice (only used for outputs) |
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| 58 | fleic , & !: Latent heat flux over the ice (only used for outputs) |
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| 59 | qlatic , & !: latent flux |
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| 60 | rdvosif, & !: Variation of volume at surface (only used for outputs) |
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| 61 | rdvobif, & !: Variation of ice volume at the bottom ice (only used for outputs) |
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| 62 | fdvolif, & !: Total variation of ice volume (only used for outputs) |
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| 63 | rdvonif, & !: Lateral Variation of ice volume (only used for outputs) |
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| 64 | sist , & !: Sea-Ice Surface Temperature (Kelvin ??? degree ??? I don't know) |
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| 65 | tfu , & !: Melting point temperature of sea water |
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| 66 | hsnif , & !: Snow thickness |
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| 67 | hicif , & !: Ice thickness |
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| 68 | hicifp , & !: Ice production/melting |
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| 69 | frld , & !: Leads fraction = 1-a/totalarea |
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| 70 | phicif , & !: ice thickness at previous time |
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| 71 | pfrld , & !: Leads fraction at previous time |
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| 72 | qstoif , & !: Energy stored in the brine pockets |
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| 73 | fbif , & !: Heat flux at the ice base |
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| 74 | rdmsnif, & !: Variation of snow mass |
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| 75 | rdmicif, & !: Variation of ice mass |
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| 76 | qldif , & !: heat balance of the lead (or of the open ocean) |
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| 77 | qcmif , & !: Energy needed to bring the ocean surface layer until its freezing |
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| 78 | fdtcn , & !: net downward heat flux from the ice to the ocean |
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| 79 | qdtcn , & !: energy from the ice to the ocean |
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| 80 | ! ! point (at a factor 2) |
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| 81 | thcm , & !: part of the solar energy used in the lead heat budget |
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| 82 | fstric , & !: Solar flux transmitted trough the ice |
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| 83 | ffltbif, & !: Array linked with the max heat contained in brine pockets (?) |
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| 84 | fscmbq , & !: Linked with the solar flux below the ice (?) |
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| 85 | fsbbq , & !: Also linked with the solar flux below the ice (?) |
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| 86 | qfvbq , & !: Array used to store energy in case of toral lateral ablation (?) |
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| 87 | dmgwi !: Variation of the mass of snow ice |
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| 88 | |
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| 89 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: & !: |
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| 90 | albege , & !: Albedo of the snow or ice (only for outputs) |
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| 91 | albecn , & !: Albedo of the ocean (only for outputs) |
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| 92 | tauc , & !: Cloud optical depth |
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| 93 | sdvt !: u*^2/(Stress/density) |
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| 94 | |
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| 95 | |
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| 96 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: & !: |
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| 97 | u_ice, v_ice, & !: two components of the ice velocity (m/s) |
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| 98 | tio_u, tio_v !: two components of the ice-ocean stress (N/m2) |
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| 99 | |
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| 100 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,nsmax) :: & !: |
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| 101 | scal0 !: ??? |
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| 102 | |
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| 103 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,nlayersp1) :: & !: |
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| 104 | tbif !: Temperature inside the ice/snow layer |
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| 105 | |
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| 106 | REAL(wp), DIMENSION(jpi,jpj,0:kmax+1) :: & !: |
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| 107 | reslum !: Relative absorption of solar radiation in each ocean level |
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| 108 | |
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| 109 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: & !: |
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| 110 | sxice, syice, sxxice, syyice, sxyice, & !: moments for advection |
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| 111 | sxsn, sysn, sxxsn, syysn, sxysn, & !: |
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| 112 | sxa, sya, sxxa, syya, sxya, & !: |
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| 113 | sxc0, syc0, sxxc0, syyc0, sxyc0, & !: |
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| 114 | sxc1, syc1, sxxc1, syyc1, sxyc1, & !: |
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| 115 | sxc2, syc2, sxxc2, syyc2, sxyc2, & !: |
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| 116 | sxst, syst, sxxst, syyst, sxyst !: |
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| 117 | |
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| 118 | #else |
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| 119 | !!---------------------------------------------------------------------- |
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| 120 | !! Default option Empty module NO LIM sea-ice model |
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| 121 | !!---------------------------------------------------------------------- |
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| 122 | #endif |
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| 123 | |
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| 124 | !!====================================================================== |
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| 125 | END MODULE ice |
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