- Timestamp:
- 2011-11-07T16:03:29+01:00 (12 years ago)
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branches/2011/dev_MERCATOR_2011_MERGE/DOC/TexFiles/Chapters/Chap_DIA.tex
r3049 r3051 681 681 numeric of the code, so that the trajectories never intercept the bathymetry. 682 682 683 \subsubsection{ Input data: initial coordinates } 684 685 Initial coordinates can be given with Ariane Tools convention ( IJK coordinates ,(\np{ln\_ariane}=true) ) 686 or with longitude and latitude. 687 688 689 In case of Ariane convention, input filename is \np{"init\_float\_ariane"}. Its format is: 690 691 \texttt{ I J K nisobfl itrash itrash } 692 693 \noindent with: 694 695 - I,J,K : indexes of initial position 696 697 - nisobfl: 0 for an isobar float, 1 for a float following the w velocity 698 699 - itrash : set to zero; it is a dummy variable to respect Ariane Tools convention 700 701 - itrash :set to zero; it is a dummy variable to respect Ariane Tools convention 702 703 \noindent Example:\\ 704 \noindent \texttt{ 100.00000 90.00000 -1.50000 1.00000 0.00000}\\ 705 \texttt{ 102.00000 90.00000 -1.50000 1.00000 0.00000}\\ 706 \texttt{ 104.00000 90.00000 -1.50000 1.00000 0.00000}\\ 707 \texttt{ 106.00000 90.00000 -1.50000 1.00000 0.00000}\\ 708 \texttt{ 108.00000 90.00000 -1.50000 1.00000 0.00000}\\ 709 710 711 In the other case ( longitude and latitude ), input filename is \np{"init\_float"}. Its format is: 712 713 \texttt{ Long Lat depth nisobfl ngrpfl itrash} 714 715 \noindent with: 716 717 - Long, Lat, depth : Longitude, latitude, depth 718 719 - nisobfl: 0 for an isobar float, 1 for a float following the w velocity 720 721 - ngrpfl : number to identify searcher group 722 723 - itrash :set to 1; it is a dummy variable. 724 725 \noindent Example: 726 727 \noindent\texttt{ 20.0 0.0 0.0 0 1 1 }\\ 728 \texttt{ -21.0 0.0 0.0 0 1 1 }\\ 729 \texttt{ -22.0 0.0 0.0 0 1 1 }\\ 730 \texttt{ -23.0 0.0 0.0 0 1 1 }\\ 731 \texttt{ -24.0 0.0 0.0 0 1 1 }\\ 732 733 \np{jpnfl} is the total number of floats during the run. 734 When initial positions are read in a restart file ( \np{ln\_rstflo= .TRUE.} ), \np{jpnflnewflo} 735 can be added in the initialization file. 736 737 \subsubsection{ Output data } 738 739 \np{nn\_writefl} is the frequency of writing in float output file and \np{nn\_stockfl} 740 is the frequency of creation of the float restart file. 741 742 Output data can be written in ascii files (\np{ln\_flo\_ascii = .TRUE.} ). In that case, 743 output filename is \np{is trajec\_float}. 744 745 Another possiblity of writing format is Netcdf (\np{ln\_flo\_ascii = .FALSE.} ). There are 2 possibilities: 746 747 - if (\key{iomput}) is used, outputs are selected in \np{iodef.xml}. Here it is an example of specification 748 to put in files description section: 749 750 \vspace{-30pt} 751 \begin{alltt} {{\scriptsize 752 \begin{verbatim} 753 754 <group id="1d\_grid\_T" name="auto" description="ocean T grid variables" > } 755 <file id="floats" description="floats variables"> }\\ 756 <field ref="traj\_lon" name="floats\_longitude" freq\_op="86400" />} 757 <field ref="traj\_lat" name="floats\_latitude" freq\_op="86400" />} 758 <field ref="traj\_dep" name="floats\_depth" freq\_op="86400" />} 759 <field ref="traj\_temp" name="floats\_temperature" freq\_op="86400" />} 760 <field ref="traj\_salt" name="floats\_salinity" freq\_op="86400" />} 761 <field ref="traj\_dens" name="floats\_density" freq\_op="86400" />} 762 <field ref="traj\_group" name="floats\_group" freq\_op="86400" />} 763 </file>} 764 </group>} 765 766 \end{verbatim} 767 }}\end{alltt} 768 769 770 - if (\key{iomput}) is not used, a file called \np{trajec\_float.nc} will be created by IOIPSL library. 771 772 773 683 774 See also \href{http://stockage.univ-brest.fr/~grima/Ariane/}{here} the web site describing 684 775 the off-line use of this marvellous diagnostic tool.
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