/[MITgcm]/MITgcm/pkg/thsice/thsice_reshape_layers.F
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Revision 1.3 - (show annotations) (download)
Fri Feb 10 00:30:32 2006 UTC (18 years, 2 months ago) by jmc
Branch: MAIN
CVS Tags: checkpoint64y, checkpoint64x, checkpoint58l_post, checkpoint64z, checkpoint64q, checkpoint64p, checkpoint64s, checkpoint64r, checkpoint64u, checkpoint64t, checkpoint64w, checkpoint64v, checkpoint64i, checkpoint64h, checkpoint64k, checkpoint64j, checkpoint64m, checkpoint64l, checkpoint64o, checkpoint64n, checkpoint64a, checkpoint64c, checkpoint64b, checkpoint64e, checkpoint64d, checkpoint64g, checkpoint64f, checkpoint58e_post, mitgcm_mapl_00, checkpoint58u_post, checkpoint58w_post, checkpoint63p, checkpoint63q, checkpoint63r, checkpoint63s, checkpoint63l, checkpoint63m, checkpoint63n, checkpoint63o, checkpoint63h, checkpoint63i, checkpoint63j, checkpoint63k, checkpoint63d, checkpoint63e, checkpoint63f, checkpoint63g, checkpoint63a, checkpoint63b, checkpoint63c, checkpoint64, checkpoint65, checkpoint60, checkpoint61, checkpoint62, checkpoint63, checkpoint58r_post, checkpoint66g, checkpoint66f, checkpoint66e, checkpoint66d, checkpoint66c, checkpoint66b, checkpoint66a, checkpoint66o, checkpoint66n, checkpoint66m, checkpoint66l, checkpoint66k, checkpoint66j, checkpoint66i, checkpoint66h, checkpoint58n_post, checkpoint58x_post, checkpoint58t_post, checkpoint58h_post, checkpoint65z, checkpoint65x, checkpoint65y, checkpoint65r, checkpoint65s, checkpoint65p, checkpoint65q, checkpoint65v, checkpoint65w, checkpoint65t, checkpoint65u, checkpoint65j, checkpoint65k, checkpoint65h, checkpoint65i, checkpoint65n, checkpoint65o, checkpoint65l, checkpoint65m, checkpoint65b, checkpoint65c, checkpoint65a, checkpoint65f, checkpoint65g, checkpoint65d, checkpoint65e, checkpoint58q_post, checkpoint59q, checkpoint59p, checkpoint59r, checkpoint58j_post, checkpoint59e, checkpoint59d, checkpoint59g, checkpoint59f, checkpoint59a, checkpoint59c, checkpoint59b, checkpoint59m, checkpoint59l, checkpoint59o, checkpoint59n, checkpoint59i, checkpoint59h, checkpoint59k, checkpoint59j, checkpoint59, checkpoint58f_post, checkpoint58d_post, checkpoint58c_post, checkpoint58a_post, checkpoint58i_post, checkpoint58g_post, checkpoint58o_post, checkpoint62c, checkpoint62b, checkpoint62a, checkpoint62g, checkpoint62f, checkpoint62e, checkpoint62d, checkpoint62k, checkpoint62j, checkpoint62i, checkpoint62h, checkpoint62o, checkpoint62n, checkpoint62m, checkpoint62l, checkpoint62s, checkpoint62r, checkpoint62q, checkpoint62p, checkpoint62w, checkpoint62v, checkpoint62u, checkpoint62t, checkpoint62z, checkpoint62y, checkpoint62x, checkpoint58y_post, checkpoint58k_post, checkpoint58v_post, checkpoint58s_post, checkpoint61f, checkpoint61g, checkpoint61d, checkpoint61e, checkpoint61b, checkpoint61c, checkpoint58p_post, checkpoint61a, checkpoint61n, checkpoint61o, checkpoint61l, checkpoint61m, checkpoint61j, checkpoint61k, checkpoint61h, checkpoint61i, checkpoint61v, checkpoint61w, checkpoint61t, checkpoint61u, checkpoint61r, checkpoint61s, checkpoint61p, checkpoint61q, checkpoint61z, checkpoint61x, checkpoint61y, checkpoint58b_post, checkpoint58m_post, HEAD
Changes since 1.2: +2 -2 lines 
put the right units in Qice description (change only commented lines)
1 C $Header: /u/gcmpack/MITgcm/pkg/thsice/thsice_reshape_layers.F,v 1.2 2004/12/17 03:44:52 jmc Exp $
2 C $Name: $
3
4 #include "THSICE_OPTIONS.h"
5
6 CBOP
7 C !ROUTINE: THSICE_RESHAPE_LAYERS
8 C !INTERFACE:
9 SUBROUTINE THSICE_RESHAPE_LAYERS(
10 U qicen,
11 I hlyr, hnew, myThid )
12
13 C !DESCRIPTION: \bv
14 C *==========================================================*
15 C | S/R THSICE_RESHAPE_LAYERS
16 C | Repartition into equal-thickness layers, conserving energy.
17 C *==========================================================*
18 C | This is the 2-layer version (formerly "NEW_LAYERS_WINTON")
19 C | from M. Winton 1999, JAOT, sea-ice model.
20 C *==========================================================*
21 C \ev
22
23 C !USES:
24 IMPLICIT NONE
25
26 C == Global variables ===
27 #include "EEPARAMS.h"
28 #include "THSICE_PARAMS.h"
29
30 C !INPUT/OUTPUT PARAMETERS:
31 C == Routine Arguments ==
32 C qicen :: ice enthalpy (J/kg)
33 C hnew :: new ice layer thickness (m)
34 C hlyr :: individual ice layer thickness (m)
35 C myThid :: Number of this instance
36 _RL qicen(*)
37 _RL hnew(*)
38 _RL hlyr
39 INTEGER myThid
40 CEOP
41
42 #ifdef ALLOW_THSICE
43 C == Local Variables ==
44 C f1 :: Fraction of upper layer ice in new layer
45 C qh1, qh2 :: qice*h for layers 1 and 2
46 C qhtot :: qh1 + qh2
47 C q2tmp :: Temporary value of qice for layer 2
48 _RL f1
49 _RL qh1, qh2
50 _RL qhtot
51 _RL q2tmp
52
53 C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
54
55 if (hnew(1).gt.hnew(2)) then
56 C- Layer 1 gives ice to layer 2
57 f1 = (hnew(1)-hlyr)/hlyr
58 q2tmp = f1*qicen(1) + (1. _d 0-f1)*qicen(2)
59 if (q2tmp.gt.Lfresh) then
60 qicen(2) = q2tmp
61 else
62 C- Keep q2 fixed to avoid q2<Lfresh and T2>0
63 qh2 = hlyr*qicen(2)
64 qhtot = hnew(1)*qicen(1) + hnew(2)*qicen(2)
65 qh1 = qhtot - qh2
66 qicen(1) = qh1/hlyr
67 endif
68 else
69 C- Layer 2 gives ice to layer 1
70 f1 = hnew(1)/hlyr
71 qicen(1) = f1*qicen(1) + (1. _d 0-f1)*qicen(2)
72 endif
73
74 #endif /* ALLOW_THSICE */
75
76 RETURN
77 END
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