/[MITgcm]/MITgcm/verification/lab_sea/code_ad/SEAICE_OPTIONS.h
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Revision 1.1 - (hide annotations) (download)
Fri Dec 15 18:11:58 2006 UTC (17 years, 5 months ago) by heimbach
Branch: MAIN
CVS Tags: checkpoint58u_post, checkpoint58w_post, checkpoint58x_post, checkpoint58t_post, checkpoint59d, checkpoint59a, checkpoint59c, checkpoint59b, checkpoint59, checkpoint58y_post, checkpoint58v_post
File MIME type: text/plain 
Initial check-in of lab_sea adjoint
(very similar to natl_box_adjoint/code_seaice)
* used C-grid and EVP solver
* used KPP, GM/Redi
* uses inAdExact=.TRUE.
* gradient checks fail for both ADM and TLM
  due to sensitive snow melt code in seaice_grwoth (look for "JZ")
  f.d. gradients actually seem more problematic than ADM, TLM gradients;
  issue is related to forward mismatch between g77 an ifort
1 heimbach 1.1 C $Header: /u/gcmpack/MITgcm/pkg/seaice/SEAICE_OPTIONS.h,v 1.16 2006/03/22 14:55:36 jmc Exp $
2    
3     C /==========================================================\
4     C | SEAICE_OPTIONS.h |
5     C | o CPP options file for sea ice package. |
6     C |==========================================================|
7     C | Use this file for selecting options within the sea ice |
8     C | package. |
9     C \==========================================================/
10    
11     #ifndef SEAICE_OPTIONS_H
12     #define SEAICE_OPTIONS_H
13     #include "PACKAGES_CONFIG.h"
14     #include "CPP_OPTIONS.h"
15    
16     C-- Write "text-plots" of certain fields in STDOUT for debugging.
17     #undef SEAICE_DEBUG
18    
19     C-- Allow sea-ice dynamic code.
20     C This option is provided to allow use of TAMC
21     C on the thermodynamics component of the code only.
22     C Sea-ice dynamics can also be turned off at runtime
23     C using variable SEAICEuseDYNAMICS.
24     #define SEAICE_ALLOW_DYNAMICS
25    
26     C-- By default, pkg/seaice defines forcing variable internally, in
27     C SEAICE_FFIELDS.h, and reads them in from files. When CPP option
28     C SEAICE_EXTERNAL_FORCING is defined, the above forcing variables
29     C are defined and provided by an external package. At present this
30     C option is hardwired for pkg/exf and the variables are passed using
31     C include file exf_fields.h.
32     #define SEAICE_EXTERNAL_FORCING
33     #ifdef SEAICE_EXTERNAL_FORCING
34     cph#include "EXF_OPTIONS.h"
35     #endif /* SEAICE_EXTERNAL_FORCING */
36    
37     C-- By default, the sea-ice package uses its own integrated bulk
38     C formulae to compute fluxes (fu, fv, EmPmR, Qnet, and Qsw) over
39     C open-ocean. When this flag is set, these variables are computed
40     C in a separate external package, for example, pkg/exf, and then
41     C modified for sea-ice effects by pkg/seaice.
42     #define SEAICE_EXTERNAL_FLUXES
43    
44     C-- By default, the sea-ice package uses 2-category thermodynamics.
45     C When this flag is set, an 8-category calculation of ice
46     C thermodynamics is carried out in groatb.F
47     C Note the pickup_seaice.* generated by this option differ
48     C from those generated with the default 2-category model.
49     C Therefore it is not possible to switch between the two
50     C in the middle of an integration.
51     #undef SEAICE_MULTILEVEL
52    
53     C-- By default cdm wind stress under sea-ice is set to the
54     C same value as it would be if there was no sea-ice.
55     C This is a placeholder until a more physically-sensible
56     C stable solution is developed. Apparently ocean stress
57     C that is based on sea-ice velocity can cause trouble in
58     C Arctic Ocean configurations. This temporary solution
59     C also corresponds to that adopted by CCSM-2. For the
60     C adventurous user who requires ice-modified stress,
61     C following options are available.
62     #undef SEAICE_ORIGINAL_BAD_ICE_STRESS
63     #undef SEAICE_TEST_ICE_STRESS_1
64    
65     C-- By default the freezing point of water is set to the value of
66     C the parameter SEAICE_freeze (=-1.96 by default). To use a
67     C simple linear dependence of the freezing point on salinity,
68     C set the following flag (pressure is assumed to have no effect,
69     C which is a good assumption for the top 20 meters). With this
70     C option defined the parameter SEAICE_freeze has no effect.
71     #undef SEAICE_VARIABLE_FREEZING_POINT
72    
73     C-- By default the seaice model is discretized on a B-Grid (for
74     C historical reasons). Define the following flag to use a new
75     C (not thoroughly) test version on a C-grid
76     #define SEAICE_CGRID
77    
78     C-- Only for the C-grid version it is possible to enable EVP code by
79     C defining the following flag
80     #ifdef SEAICE_CGRID
81     #define SEAICE_ALLOW_EVP
82     #endif /* SEAICE_CGRID */
83    
84     #endif /* SEAICE_OPTIONS_H */
85    
86     CEH3 ;;; Local Variables: ***
87     CEH3 ;;; mode:fortran ***
88     CEH3 ;;; End: ***
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