1 | MODULE ice_2 |
---|
2 | !!====================================================================== |
---|
3 | !! *** MODULE ice *** |
---|
4 | !! Sea Ice physics: diagnostics variables of ice defined in memory |
---|
5 | !!===================================================================== |
---|
6 | !! History : 2.0 ! 2003-08 (C. Ethe) F90: Free form and module |
---|
7 | !! 3.3 ! 2009-05 (G.Garric) addition of the lim2_evp cas |
---|
8 | !!---------------------------------------------------------------------- |
---|
9 | #if defined key_lim2 |
---|
10 | !!---------------------------------------------------------------------- |
---|
11 | !! 'key_lim2' : LIM 2.0 sea-ice model |
---|
12 | !!---------------------------------------------------------------------- |
---|
13 | USE par_ice_2 ! LIM sea-ice parameters |
---|
14 | |
---|
15 | IMPLICIT NONE |
---|
16 | PRIVATE |
---|
17 | |
---|
18 | ! !!* namicerun namelist * |
---|
19 | CHARACTER(len=32) , PUBLIC :: cn_icerst_in = "restart_ice_in" !: suffix of ice restart name (input) |
---|
20 | CHARACTER(len=32) , PUBLIC :: cn_icerst_out = "restart_ice" !: suffix of ice restart name (output) |
---|
21 | LOGICAL , PUBLIC :: ln_limdyn = .TRUE. !: flag for ice dynamics (T) or not (F) |
---|
22 | LOGICAL , PUBLIC :: ln_limdmp = .FALSE. !: Ice damping |
---|
23 | LOGICAL , PUBLIC :: ln_nicep = .TRUE. !: flag grid points output (T) or not (F) |
---|
24 | REAL(wp) , PUBLIC :: hsndif = 0.e0 !: computation of snow temp. (0) or not (9999) |
---|
25 | REAL(wp) , PUBLIC :: hicdif = 0.e0 !: computation of ice temp. (0) or not (9999) |
---|
26 | REAL(wp), DIMENSION(2), PUBLIC :: acrit = (/ 1.e-06 , 1.e-06 /) !: minimum fraction for leads in |
---|
27 | ! !: north and south hemisphere |
---|
28 | ! !!* ice-dynamic namelist (namicedyn) * |
---|
29 | INTEGER , PUBLIC :: nbiter = 1 !: number of sub-time steps for relaxation |
---|
30 | INTEGER , PUBLIC :: nbitdr = 250 !: maximum number of iterations for relaxation |
---|
31 | REAL(wp), PUBLIC :: rdt_ice !: ice time step |
---|
32 | REAL(wp), PUBLIC :: epsd = 1.0e-20 !: tolerance parameter for dynamic |
---|
33 | REAL(wp), PUBLIC :: alpha = 0.5 !: coefficient for semi-implicit coriolis |
---|
34 | REAL(wp), PUBLIC :: dm = 0.6e+03 !: diffusion constant for dynamics |
---|
35 | REAL(wp), PUBLIC :: om = 0.5 !: relaxation constant |
---|
36 | REAL(wp), PUBLIC :: resl = 5.0e-05 !: maximum value for the residual of relaxation |
---|
37 | REAL(wp), PUBLIC :: cw = 5.0e-03 !: drag coefficient for oceanic stress |
---|
38 | REAL(wp), PUBLIC :: angvg = 0.e0 !: turning angle for oceanic stress |
---|
39 | REAL(wp), PUBLIC :: pstar = 1.0e+04 !: first bulk-rheology parameter |
---|
40 | REAL(wp), PUBLIC :: c_rhg = 20.e0 !: second bulk-rhelogy parameter |
---|
41 | REAL(wp), PUBLIC :: etamn = 0.e+07 !: minimun value for viscosity |
---|
42 | REAL(wp), PUBLIC :: creepl = 2.e-08 !: creep limit |
---|
43 | REAL(wp), PUBLIC :: ecc = 2.e0 !: eccentricity of the elliptical yield curve |
---|
44 | REAL(wp), PUBLIC :: ahi0 = 350.e0 !: sea-ice hor. eddy diffusivity coeff. (m2/s) |
---|
45 | INTEGER , PUBLIC :: nevp = 360 !: number of EVP subcycling iterations |
---|
46 | INTEGER , PUBLIC :: telast = 3600 !: timescale for EVP elastic waves |
---|
47 | REAL(wp), PUBLIC :: alphaevp = 1.e0 !: coefficient for the solution of EVP int. stresses |
---|
48 | REAL(wp), PUBLIC :: usecc2 !: = 1.0 / ( ecc * ecc ) |
---|
49 | REAL(wp), PUBLIC :: rhoco !: = rau0 * cw |
---|
50 | REAL(wp), PUBLIC :: sangvg, cangvg !: sin and cos of the turning angle for ocean stress |
---|
51 | REAL(wp), PUBLIC :: pstarh !: pstar / 2.0 |
---|
52 | |
---|
53 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: ahiu , ahiv !: hor. diffusivity coeff. at ocean U- and V-points (m2/s) |
---|
54 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: pahu , pahv !: ice hor. eddy diffusivity coef. at ocean U- and V-points |
---|
55 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: ust2s !: friction velocity |
---|
56 | |
---|
57 | # if defined key_lim2_vp |
---|
58 | ! !!* VP rheology * |
---|
59 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: hsnm , hicm !: mean snow and ice thicknesses |
---|
60 | CHARACTER(len=1), PUBLIC :: cl_grid = 'B' !: type of grid used in ice dynamics, 'C' or 'B' |
---|
61 | # else |
---|
62 | ! !!* EVP rheology * |
---|
63 | CHARACTER(len=1), PUBLIC :: cl_grid = 'C' !: type of grid used in ice dynamics, 'C' or 'B' |
---|
64 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: stress1_i !: first stress tensor element |
---|
65 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: stress2_i !: second stress tensor element |
---|
66 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: stress12_i !: diagonal stress tensor element |
---|
67 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: delta_i !: rheology delta factor (see Flato and Hibler 95) [s-1] |
---|
68 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: divu_i !: Divergence of the velocity field [s-1] -> limrhg.F90 |
---|
69 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: shear_i !: Shear of the velocity field [s-1] -> limrhg.F90 |
---|
70 | ! |
---|
71 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: at_i !: |
---|
72 | REAL(wp), PUBLIC, DIMENSION(:,:) , POINTER :: vt_s ,vt_i !: mean snow and ice thicknesses |
---|
73 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj), TARGET :: hsnm , hicm !: target vt_s ,vt_i pointers |
---|
74 | #endif |
---|
75 | |
---|
76 | ! !!* diagnostic quantities |
---|
77 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: rdvosif !: ice volume change at ice surface (only used for outputs) |
---|
78 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: rdvobif !: ice volume change at ice bottom (only used for outputs) |
---|
79 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: fdvolif !: Total ice volume change (only used for outputs) |
---|
80 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: rdvonif !: Lateral ice volume change (only used for outputs) |
---|
81 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: sist !: Sea-Ice Surface Temperature [Kelvin] |
---|
82 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: tfu !: Freezing/Melting point temperature of sea water at SSS |
---|
83 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: hicif !: Ice thickness |
---|
84 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: hsnif !: Snow thickness |
---|
85 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: hicifp !: Ice production/melting |
---|
86 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: frld !: Leads fraction = 1-a/totalarea |
---|
87 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: phicif !: ice thickness at previous time |
---|
88 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: pfrld !: Leads fraction at previous time |
---|
89 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: qstoif !: Energy stored in the brine pockets |
---|
90 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: fbif !: Heat flux at the ice base |
---|
91 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: rdmsnif !: Variation of snow mass |
---|
92 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: rdmicif !: Variation of ice mass |
---|
93 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: qldif !: heat balance of the lead (or of the open ocean) |
---|
94 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: qcmif !: Energy needed to bring ocean surface layer to freezing |
---|
95 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: fdtcn !: net downward heat flux from the ice to the ocean |
---|
96 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: qdtcn !: energy from the ice to the ocean point (at a factor 2) |
---|
97 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: thcm !: part of the solar energy used in the lead heat budget |
---|
98 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: fstric !: Solar flux transmitted trough the ice |
---|
99 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: ffltbif !: Array linked with the max brine pockets heat content |
---|
100 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: fscmbq !: Linked with the solar flux below the ice (?) |
---|
101 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: fsbbq !: Also linked with the solar flux below the ice (?) |
---|
102 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: qfvbq !: Array used to store energy (total lateral ablation case) |
---|
103 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: dmgwi !: Variation of the mass of snow ice |
---|
104 | |
---|
105 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: u_ice, v_ice !: two components of the ice velocity at I-point [m/s] |
---|
106 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: u_oce, v_oce !: two components of the ocean velocity at I-point [m/s] |
---|
107 | |
---|
108 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jplayersp1) :: tbif !: Temperature inside the ice/snow layer |
---|
109 | |
---|
110 | ! !!* moment used in the advection |
---|
111 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: sxice, syice, sxxice, syyice, sxyice !: for ice volume |
---|
112 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: sxsn, sysn, sxxsn, syysn, sxysn !: for snow volume |
---|
113 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: sxa, sya, sxxa, syya, sxya !: for ice cover area |
---|
114 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: sxc0, syc0, sxxc0, syyc0, sxyc0 !: for heat content of snow |
---|
115 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: sxc1, syc1, sxxc1, syyc1, sxyc1 !: for heat content of 1st ice layer |
---|
116 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: sxc2, syc2, sxxc2, syyc2, sxyc2 !: for heat content of 2nd ice layer |
---|
117 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: sxst, syst, sxxst, syyst, sxyst !: for heat content of brine pockets |
---|
118 | |
---|
119 | #else |
---|
120 | !!---------------------------------------------------------------------- |
---|
121 | !! Default option Empty module NO LIM-2 sea-ice model |
---|
122 | !!---------------------------------------------------------------------- |
---|
123 | #endif |
---|
124 | |
---|
125 | !!---------------------------------------------------------------------- |
---|
126 | !! NEMO/LIM2 3.3, UCL-LOCEAN-IPSL (2010) |
---|
127 | !! $Id$ |
---|
128 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
---|
129 | !!====================================================================== |
---|
130 | END MODULE ice_2 |
---|