Changeset 996 for trunk/DOC/TexFiles/Chapters/Introduction.tex
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trunk/DOC/TexFiles/Chapters/Introduction.tex
r994 r996 20 20 (www.locean-ipsl.upmc.fr/NEMO). 21 21 22 The ocean component of \NEMO has been developed from the OPA model, release 8.2, described in \citet{Madec1998}. This model has been used for a wide range of applications, both regional or global, as a forced ocean model and as a model coupled with the atmosphere. A complete list of references is found on the \NEMO web site. 22 The ocean component of \NEMO has been developed from the OPA model, 23 release 8.2, described in \citet{Madec1998}. This model has been used for a wide 24 range of applications, both regional or global, as a forced ocean model and as a 25 model coupled with the atmosphere. A complete list of references is found on the 26 \NEMO web site. 23 27 24 28 This manual is organised in as follows. Chapter~\ref{PE} presents the model basics, 25 29 $i.e.$ the equations and their assumptions, the vertical coordinates used, and the 26 30 subgrid scale physics. This part deals with the continuous equations of the model 27 (primitive equations, with potential temperature, salinity and an equation of state). The28 equations are written in a curvilinear coordinate system, with a choice of vertical31 (primitive equations, with potential temperature, salinity and an equation of state). 32 The equations are written in a curvilinear coordinate system, with a choice of vertical 29 33 coordinates ($z$ or $s$, with the rescaled height coordinate formulation \textit{z*}, or 30 34 \textit{s*}). Momentum equations are formulated in the vector invariant form or in the … … 118 122 119 123 OPA, like all research tools, is in perpetual evolution. The present document describes 120 the OPA version include in the release 2.3of NEMO. This release differs significantly124 the OPA version include in the release 3.0 of NEMO. This release differs significantly 121 125 from version 8, documented in \citet{Madec1998}. The main modifications are :\\ 122 (1) transition to full native \textsc{Fortran} 90, deep code restructuring and drastic reduction of CPP keys; \\ 126 (1) transition to full native \textsc{Fortran} 90, deep code restructuring and drastic 127 reduction of CPP keys; \\ 123 128 (2) introduction of partial step representation of bottom topography \citep{Barnier_al_OD06}; \\ 124 (3) partial reactivation of a terrain-following vertical coordinate ($s$- and hybrid $s$-$z$) with the addition of several options for pressure gradient computation \footnote{Partial support of $s$-coordinate: there is presently no support for neutral physics in $s$-coordinate and for the new options for horizontal pressure gradient computation with a non-linear equation of state.}; \\ 125 (4) more choices for the treatment of the free surface: full explicit, split-explicit , filtered and rigid-lid; \\ 126 (5) non linear free surface option (associated with the rescaled height coordinate \textit{z*} or \textit{s*}); \\ 129 (3) partial reactivation of a terrain-following vertical coordinate ($s$- and hybrid $s$-$z$) 130 with the addition of several options for pressure gradient computation \footnote{Partial 131 support of $s$-coordinate: there is presently no support for neutral physics in $s$- 132 coordinate and for the new options for horizontal pressure gradient computation with 133 a non-linear equation of state.}; \\ 134 (4) more choices for the treatment of the free surface: full explicit, split-explicit , filtered 135 and rigid-lid; \\ 136 (5) non linear free surface option (associated with the rescaled height coordinate 137 \textit{z*} or \textit{s*}); \\ 127 138 (6) additional schemes for vector and flux forms of the momentum advection; \\ 128 139 (7) additional advection schemes for tracers; \\ … … 131 142 (10) rewriting of the I/O management; \\ 132 143 (11) OASIS 3 and 4 couplers interfacing with atmospheric global circulation models. 144 (12) surface module (SBC) that simplify the way the ocean is forced and include two 145 bulk formulea (CLIO and CORE) 146 (13) introduction of LIM 3, the new Louvain-la-Neuve sea-ice model (C-grid rheology and 147 new thermodynamics including bulk ice salinity) 133 148 134 149 In addition, several minor modifications in the coding have been introduced with the constant concern of improving performance on both scalar and vector computers. 135 150 136 At the time of this writing, the current release is NEMO 2.3. The new surface module described in this document is not yet part of the current distribution.137 138 \vspace{1cm}139 \colorbox{red}{Red color}: not in the current reference version (v2.3) but expected soon.140 141 \colorbox{yellow}{Yellow color}: missing references, text to be updated.142
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