1 | MODULE ice_2 |
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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 | !! History : 2.0 ! 03-08 (C. Ethe) F90: Free form and module |
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7 | !!---------------------------------------------------------------------- |
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8 | #if defined key_lim2 |
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9 | !!---------------------------------------------------------------------- |
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10 | !! 'key_lim2' : LIM 2.0 sea-ice model |
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11 | !!---------------------------------------------------------------------- |
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12 | !! LIM 2.0, UCL-LOCEAN-IPSL (2006) |
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13 | !! $Id$ |
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14 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
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15 | !!---------------------------------------------------------------------- |
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16 | !! * Modules used |
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17 | USE par_ice_2 ! LIM sea-ice parameters |
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18 | |
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19 | IMPLICIT NONE |
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20 | PRIVATE |
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21 | |
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22 | !!* Share parameters namelist (namicerun read in iceini) * |
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23 | CHARACTER(len=32) , PUBLIC :: cn_icerst_in = "restart_ice_in" !: suffix of ice restart name (input) |
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24 | CHARACTER(len=32) , PUBLIC :: cn_icerst_out = "restart_ice" !: suffix of ice restart name (output) |
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25 | LOGICAL , PUBLIC :: ln_limdyn = .TRUE. !: flag for ice dynamics (T) or not (F) |
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26 | LOGICAL , PUBLIC :: ln_limdmp = .FALSE. !: Ice damping |
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27 | REAL(wp) , PUBLIC :: hsndif = 0.e0 !: computation of temp. in snow (0) or not (9999) |
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28 | REAL(wp) , PUBLIC :: hicdif = 0.e0 !: computation of temp. in ice (0) or not (9999) |
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29 | REAL(wp), DIMENSION(2), PUBLIC :: acrit = (/ 1.e-06 , 1.e-06 /) !: minimum fraction for leads in |
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30 | ! !: north and south hemisphere |
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31 | !!* ice-dynamic namelist (namicedyn) * |
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32 | INTEGER , PUBLIC :: nbiter = 1 !: number of sub-time steps for relaxation |
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33 | INTEGER , PUBLIC :: nbitdr = 250 !: maximum number of iterations for relaxation |
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34 | REAL(wp), PUBLIC :: rdt_ice !: ice time step |
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35 | REAL(wp), PUBLIC :: epsd = 1.0e-20 !: tolerance parameter for dynamic |
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36 | REAL(wp), PUBLIC :: alpha = 0.5 !: coefficient for semi-implicit coriolis |
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37 | REAL(wp), PUBLIC :: dm = 0.6e+03 !: diffusion constant for dynamics |
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38 | REAL(wp), PUBLIC :: om = 0.5 !: relaxation constant |
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39 | REAL(wp), PUBLIC :: resl = 5.0e-05 !: maximum value for the residual of relaxation |
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40 | REAL(wp), PUBLIC :: cw = 5.0e-03 !: drag coefficient for oceanic stress |
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41 | REAL(wp), PUBLIC :: angvg = 0.e0 !: turning angle for oceanic stress |
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42 | REAL(wp), PUBLIC :: pstar = 1.0e+04 !: first bulk-rheology parameter |
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43 | REAL(wp), PUBLIC :: c_rhg = 20.e0 !: second bulk-rhelogy parameter |
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44 | REAL(wp), PUBLIC :: etamn = 0.e+07 !: minimun value for viscosity |
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45 | REAL(wp), PUBLIC :: creepl = 2.e-08 !: creep limit |
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46 | REAL(wp), PUBLIC :: ecc = 2.e0 !: eccentricity of the elliptical yield curve |
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47 | REAL(wp), PUBLIC :: ahi0 = 350.e0 !: sea-ice hor. eddy diffusivity coeff. (m2/s) |
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48 | |
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49 | REAL(wp), PUBLIC :: usecc2 !: = 1.0 / ( ecc * ecc ) |
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50 | REAL(wp), PUBLIC :: rhoco !: = rau0 * cw |
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51 | REAL(wp), PUBLIC :: sangvg, cangvg !: sin and cos of the turning angle for ocean stress |
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52 | REAL(wp), PUBLIC :: pstarh !: pstar / 2.0 |
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53 | |
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54 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: ahiu , ahiv !: hor. diffusivity coeff. at ocean U- and V-points (m2/s) |
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55 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: pahu , pahv !: ice hor. eddy diffusivity coef. at ocean U- and V-points |
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56 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: hsnm , hicm !: mean snow and ice thicknesses |
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57 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: ust2s !: friction velocity |
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58 | |
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59 | !!* diagnostic quantities |
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60 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: sist !: Sea-Ice Surface Temperature (Kelvin) |
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61 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: tfu !: Freezing/Melting point temperature of sea water at SSS |
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62 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: hicif !: Ice thickness |
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63 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: hsnif !: Snow thickness |
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64 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: hicifp !: Ice production/melting |
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65 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: frld !: Leads fraction = 1-a/totalarea |
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66 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: phicif !: ice thickness at previous time |
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67 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: pfrld !: Leads fraction at previous time |
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68 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: qstoif !: Energy stored in the brine pockets |
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69 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: fbif !: Heat flux at the ice base |
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70 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: rdmsnif !: Variation of snow mass |
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71 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: rdmicif !: Variation of ice mass |
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72 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: qldif !: heat balance of the lead (or of the open ocean) |
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73 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: qcmif !: Energy needed to bring the ocean surface layer until its freezing |
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74 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: fdtcn !: net downward heat flux from the ice to the ocean |
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75 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: qdtcn !: energy from the ice to the ocean point (at a factor 2) |
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76 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: thcm !: part of the solar energy used in the lead heat budget |
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77 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: fstric !: Solar flux transmitted trough the ice |
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78 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: ffltbif !: Array linked with the max heat contained in brine pockets (?) |
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79 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: fscmbq !: Linked with the solar flux below the ice (?) |
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80 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: fsbbq !: Also linked with the solar flux below the ice (?) |
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81 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: qfvbq !: Array used to store energy in case of toral lateral ablation (?) |
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82 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: dmgwi !: Variation of the mass of snow ice |
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83 | |
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84 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: u_ice, v_ice !: two components of the ice velocity at I-point (m/s) |
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85 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: u_oce, v_oce !: two components of the ocean velocity at I-point (m/s) |
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86 | |
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87 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jplayersp1) :: tbif !: Temperature inside the ice/snow layer |
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88 | |
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89 | !!* moment used in the advection scheme |
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90 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: sxice, syice, sxxice, syyice, sxyice !: for ice volume |
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91 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: sxsn, sysn, sxxsn, syysn, sxysn !: for snow volume |
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92 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: sxa, sya, sxxa, syya, sxya !: for ice cover area |
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93 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: sxc0, syc0, sxxc0, syyc0, sxyc0 !: for heat content of snow |
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94 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: sxc1, syc1, sxxc1, syyc1, sxyc1 !: for heat content of 1st ice layer |
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95 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: sxc2, syc2, sxxc2, syyc2, sxyc2 !: for heat content of 2nd ice layer |
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96 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: sxst, syst, sxxst, syyst, sxyst !: for heat content of brine pockets |
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97 | |
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98 | #else |
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99 | !!---------------------------------------------------------------------- |
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100 | !! Default option Empty module NO LIM 2.0 sea-ice model |
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101 | !!---------------------------------------------------------------------- |
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102 | #endif |
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103 | |
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104 | !!====================================================================== |
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105 | END MODULE ice_2 |
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