Changeset 3049 for branches/2011/dev_MERCATOR_2011_MERGE/DOC/TexFiles

Timestamp:

2011-11-07T14:22:59+01:00 (13 years ago)

Author:

cbricaud

Message:

add changes from dev_r2802_MERCATOR10_diadct

Location:

branches/2011/dev_MERCATOR_2011_MERGE/DOC/TexFiles

Files:

• Chapters/Chap_DIA.tex (modified) (4 diffs)
• Figures/logo_MERCATOR.pdf (modified) (previous)
• Namelist/namdct (copied) (copied from branches/2011/dev_r2802_MERCATOR10_diadct/DOC/TexFiles/Namelist/namdct)

branches/2011/dev_MERCATOR_2011_MERGE/DOC/TexFiles/Chapters/Chap_DIA.tex

@@ -684 +684 @@
 the off-line use of this marvellous diagnostic tool.
 
+
 % -------------------------------------------------------------------------------------------------------------
 %       Harmonic analysis of tidal constituents
@@ -726 +727 @@
 
 We obtain in output $C_{j}$ and $S_{j}$ for each tidal wave.
+
+% -------------------------------------------------------------------------------------------------------------
+%       Sections transports
+% -------------------------------------------------------------------------------------------------------------
+\section{Transports across sections (\key{diadct}) }
+\label{DIA_diag_dct}
+
+A module is available to compute the transport of volume, heat and salt through sections. This diagnostic
+is actived with \key{diadct}.
+
+Each section is defined by the coordinates of its 2 extremities. The pathways between them are contructed
+using tools which can be found in  \texttt{NEMOGCM/TOOLS/SECTIONS\_DIADCT} and are written in a binary file
+ \texttt{section\_ijglobal.diadct\_ORCA2\_LIM} which is later read in by NEMO to compute on-line transports.
+
+The on-line transports module creates three output ascii files: 
+
+- \texttt{volume\_transport} for volume transports (  unit: $10^{6} m^{3} s^{-1}$ )
+
+- \texttt{heat\_transport}   for heat transports   (  unit: $10^{15} W $ )
+
+- \texttt{salt\_transport}   for salt transports   (  unit: $10^{9}g s^{-1}$ )\\
+
+
+Namelist parameters control how frequently the flows are summed and the time scales over which
+ they are averaged, as well as the level of output for debugging:
+
+%------------------------------------------namdct----------------------------------------------------
+\namdisplay{namdct}
+%-------------------------------------------------------------------------------------------------------------
+
+\texttt{nn\_dct}: frequency of instantaneous transports computing
+
+\texttt{nn\_dctwri}: frequency of writing ( mean of instantaneous transports )
+
+\texttt{nn\_debug}: debugging of the section
+
+\subsubsection{ To create a binary file containing the pathway of each section }
+
+In \texttt{NEMOGCM/TOOLS/SECTIONS\_DIADCT/run}, the file \texttt{ {list\_sections.ascii\_global}}
+contains a list of all the sections that are to be computed (this list of sections is based on MERSEA project metrics).
+
+Another file is available for the GYRE configuration (\texttt{ {list\_sections.ascii\_GYRE}}). 
+
+Each section is defined by:
+
+\noindent \texttt{ long1 lat1 long2 lat2 nclass (ok/no)strpond (no)ice section\_name }\\
+with:
+
+- \texttt{long1 lat1} , coordinates of the first extremity of the section;
+
+- \texttt{long2 lat2} , coordinates of the second extremity of the section;
+
+- \texttt{nclass} the number of bounds of your classes (e.g. 3 bounds for 2 classes);
+
+- \texttt{okstrpond} to compute heat and salt transport, \texttt{nostrpond} if no;
+
+- \texttt{ice}  to compute surface and volume ice transports, \texttt{noice} if no. \\
+
+
+\noindent The results of the computing of transports, and the directions of positive
+ and negative flow do not depend on the order of the 2 extremities in this file.\\ 
+
+
+\noindent If nclass =/ 0,the next lines contain the class type and the nclass bounds:
+
+\texttt{long1 lat1 long2 lat2 nclass (ok/no)strpond (no)ice section\_name}
+
+\texttt{classtype}
+
+\texttt{zbound1}
+
+\texttt{zbound2}
+
+\texttt{.}
+
+\texttt{.}
+
+\texttt{nclass-1}
+
+\texttt{nclass}
+
+\noindent where \texttt{classtype} can be:
+
+- \texttt{zsal} for salinity classes
+
+- \texttt{ztem} for temperature classes
+
+- \texttt{zlay} for depth classes
+
+- \texttt{zsigi} for insitu density classes
+
+- \texttt{zsigp} for potential density classes \\
+
+  
+The script \texttt{job.ksh} computes the pathway for each section and creates a binary file 
+\texttt{section\_ijglobal.diadct\_ORCA2\_LIM} which is read by NEMO. \\
+
+It is possible to use this tools for new configuations: \texttt{job.ksh} has to be updated 
+with the coordinates file name and path. \\
+
+
+Examples of two sections, the ACC\_Drake\_Passage with no classes, and the
+ ATL\_Cuba\_Florida with 4 temperature clases (5 class bounds), are shown:
+
+\noindent \texttt{ -68.    -54.5   -60.    -64.7  00 okstrpond noice ACC\_Drake\_Passage}
+
+\noindent \texttt{ -80.5    22.5   -80.5    25.5  05 nostrpond noice ATL\_Cuba\_Florida}
+
+\noindent \texttt{ztem}
+
+\noindent \texttt{-2.0}
+
+\noindent \texttt{ 4.5}
+
+\noindent \texttt{ 7.0}
+
+\noindent \texttt{12.0}
+
+\noindent \texttt{40.0}
+
+
+\subsubsection{ To read the output files }
+
+The output format is :
+ 
+\small{\texttt{date, time-step number, section number, section name, section slope coefficient, class number, 
+class name, class bound 1 , classe bound2, transport\_direction1 ,  transport\_direction2, transport\_total}}\\
+
+
+For sections with classes, the first \texttt{nclass-1} lines correspond to the transport for each class 
+and the last line corresponds to the total transport summed over all classes. For sections with no classes, class number
+\texttt{ 1 } corresponds to \texttt{ total class } and this class is called  \texttt{N}, meaning \texttt{none}.\\
+
+
+\noindent \texttt{ transport\_direction1 } is the positive part of the transport ( \texttt{ > = 0 } ).
+
+\noindent \texttt{ transport\_direction2 } is the negative part of the transport ( \texttt{ < = 0 } ).\\
+
+
+\noindent The \texttt{section slope coefficient} gives information about the significance of transports signs and direction:\\
+
+
+
+\begin{tabular}{|c|c|c|c|p{4cm}|}
+\hline
+section slope coefficient & section type & direction 1 & direction 2 & total transport \\ \hline
+0.    &  horizontal & northward & southward & postive: northward  \\ \hline
+1000. &  vertical   & eastward  & westward  & postive: eastward  \\ \hline                
+\texttt{=/0, =/ 1000.}   &  diagonal   & eastward  & westward  & postive: eastward  \\ \hline                
+\end{tabular}
+
+
 
 % -------------------------------------------------------------------------------------------------------------
@@ -769 +922 @@
 are removed from the sub-basins. Note also that the Arctic Ocean has been split 
 into Atlantic and Pacific basins along the North fold line.  }
-\end{center}   \end{figure}
+\end{center}   \end{figure}  
 %>>>>>>>>>>>>>>>>>>>>>>>>>>>>
 
@@ -776 +929 @@
 (see Section \ref{MISC_steric} below for one of them). 
 Activating those outputs requires to define the \key{diaar5} CPP key.
+\\
+\\
+