pkg/generic_advdiff/GAD_OPTIONS.h

C $Header: /u/gcmpack/MITgcm/pkg/generic_advdiff/GAD_OPTIONS.h,v 1.7 2007/01/16 04:38:34 jmc Exp $
C $Name:  $

CBOP
C !ROUTINE: GAD_OPTIONS.h

C !INTERFACE:
C #include "GAD_OPTIONS.h" 

C !DESCRIPTION:
C Contains CPP macros/flags for controlling optional features of package.
CEOP

C CPP options file for GAD (Generic Advection Diffusion) package
C
C Use this file for selecting options within the GAD package

#ifndef GAD_OPTIONS_H
#define GAD_OPTIONS_H
#include "PACKAGES_CONFIG.h"
#ifdef ALLOW_GENERIC_ADVDIFF

#include "CPP_OPTIONS.h"

C This flag selects the form of COSINE(lat) scaling of bi-harmonic term.
C *only for use on a lat-lon grid*
C Setting this flag here only affects the bi-harmonic tracer terms; to
C use COSINEMETH_III in the momentum equations set it CPP_OPTIONS.h
#define COSINEMETH_III

C This selects isotropic scaling of harmonic and bi-harmonic term when
C using the COSINE(lat) scaling.
C Setting this flag here only affects the tracer diffusion terms; to
C use ISOTROPIC_COS_SCALING of the horizontal viscosity terms in the 
C momentum equations set it CPP_OPTIONS.h; the following line
C even overrides setting the flag in CPP_OPTIONS.h
#undef ISOTROPIC_COS_SCALING

C As of checkpoint41, the inclusion of multi-dimensional advection
C introduces excessive recomputation/storage for the adjoint.
C We can disable it here using CPP because run-time flags are insufficient.
#undef DISABLE_MULTIDIM_ADVECTION

C This enable the use of 2nd-Order Moment advection scheme (Prather, 1986)
C due to large memory space (10 times more / tracer) requirement,
C by default, this part of the code is not compiled.
#define GAD_ALLOW_SOM_ADVECT

#else

C If GAD is disabled then so is multi-dimensional advection
#define DISABLE_MULTIDIM_ADVECTION

#endif /* ALLOW_GENERIC_ADVDIFF */
#endif /* GAD_OPTIONS_H */
1	C $Header: /u/gcmpack/MITgcm/pkg/generic_advdiff/GAD_OPTIONS.h,v 1.7 2007/01/16 04:38:34 jmc Exp $
2	C $Name: $
3
4	CBOP
5	C !ROUTINE: GAD_OPTIONS.h
6
7	C !INTERFACE:
8	C #include "GAD_OPTIONS.h"
9
10	C !DESCRIPTION:
11	C Contains CPP macros/flags for controlling optional features of package.
12	CEOP
13
14	C CPP options file for GAD (Generic Advection Diffusion) package
15	C
16	C Use this file for selecting options within the GAD package
17
18	#ifndef GAD_OPTIONS_H
19	#define GAD_OPTIONS_H
20	#include "PACKAGES_CONFIG.h"
21	#ifdef ALLOW_GENERIC_ADVDIFF
22
23	#include "CPP_OPTIONS.h"
24
25	C This flag selects the form of COSINE(lat) scaling of bi-harmonic term.
26	C only for use on a lat-lon grid
27	C Setting this flag here only affects the bi-harmonic tracer terms; to
28	C use COSINEMETH_III in the momentum equations set it CPP_OPTIONS.h
29	#define COSINEMETH_III
30
31	C This selects isotropic scaling of harmonic and bi-harmonic term when
32	C using the COSINE(lat) scaling.
33	C Setting this flag here only affects the tracer diffusion terms; to
34	C use ISOTROPIC_COS_SCALING of the horizontal viscosity terms in the
35	C momentum equations set it CPP_OPTIONS.h; the following line
36	C even overrides setting the flag in CPP_OPTIONS.h
37	#undef ISOTROPIC_COS_SCALING
38
39	C As of checkpoint41, the inclusion of multi-dimensional advection
40	C introduces excessive recomputation/storage for the adjoint.
41	C We can disable it here using CPP because run-time flags are insufficient.
42	#undef DISABLE_MULTIDIM_ADVECTION
43
44	C This enable the use of 2nd-Order Moment advection scheme (Prather, 1986)
45	C due to large memory space (10 times more / tracer) requirement,
46	C by default, this part of the code is not compiled.
47	#define GAD_ALLOW_SOM_ADVECT
48
49	#else
50
51	C If GAD is disabled then so is multi-dimensional advection
52	#define DISABLE_MULTIDIM_ADVECTION
53
54	#endif /* ALLOW_GENERIC_ADVDIFF */
55	#endif /* GAD_OPTIONS_H */