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C $Header: /u/gcmpack/MITgcm/pkg/flt/flt_main.F,v 1.5 2009/02/01 20:48:50 jmc Exp $ |
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C $Name: $ |
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|
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#include "FLT_OPTIONS.h" |
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|
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C ================================================================== |
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C |
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C Float Package for the MIT Model |
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C |
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C Main Routines: |
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C |
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C o flt_main - Integrates the floats forward and stores |
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C positions and vertical profiles at specific |
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C time intervals. |
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C o flt_readparms - Read parameter file |
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C o flt_init_fixed - Initialise fixed |
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C o flt_init_varia - Initialise the floats |
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C o flt_restart - Writes restart data to file (=> renamed: flt_write_pickup) |
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C |
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C Second Level Subroutines: |
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C |
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C o flt_runga2 - Second order Runga-Kutta inetgration (default) |
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C o flt_exchg - Does a new distribution of floats over tiles |
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C after every integration step. |
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C o flt_up - moves float to the surface (if flag is set) |
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C and stores profiles to file |
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C o flt_down - moves float to its target depth (if flag is set) |
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C o flt_traj - stores positions and data to file |
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C o flt_interp_linear - contains blinear interpolation scheme |
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C o flt_mapping - contains mapping functions & subroutine |
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C o flt_mdsreadvector - modified mdsreadvector to read files |
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C |
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C ToDo: |
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C |
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C o avoid exchanges when arrays empty |
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C o 3D advection of floats |
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C |
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C ================================================================== |
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C |
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C Documentation: |
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C |
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C To be made.... |
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C |
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C |
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C started: Arne Biastoch abiastoch@ucsd.edu 10-Jan-2000 |
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C (adopted from version written by Detlef Stammer |
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C for the old model code) |
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C |
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C changed: Arne Biastoch abiastoch@ucsd.edu 21-JUN-2001 |
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C |
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C ================================================================== |
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|
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|
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SUBROUTINE FLT_MAIN ( |
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I myTime, myIter, myThid ) |
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|
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C ================================================================== |
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C SUBROUTINE FLT_MAIN |
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C ================================================================== |
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C o This routine steps floats forward in time and samples the model |
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C state at float position every flt_int_traj time steps. |
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C Also moves the float up and down and samples vertical profiles. |
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C |
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C o Uses 2nd or fourth order runga-kutta |
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C o Spatial interpolation is bilinear close to boundaries and otherwise |
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C a polynomial interpolation. |
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C o Particles are kept in grid space (with position of dp taken as |
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C x(south), y(east) grid cell point) |
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C o Calls profile every flt_int_prof time steps; in that event the |
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C profile over the whole water column is written to file and the |
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C float might be moved upwards to the surface (depending on its |
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C configuration). |
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C ================================================================== |
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|
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C !USES: |
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IMPLICIT NONE |
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|
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#include "EEPARAMS.h" |
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#include "SIZE.h" |
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#include "FLT.h" |
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|
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C == routine arguments == |
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C myThid - thread number for this instance of the routine. |
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_RL myTime |
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INTEGER myIter, myThid |
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|
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C integration of the float trajectories |
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|
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#ifdef FLT_SECOND_ORDER_RUNGE_KUTTA |
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c WRITE(0,*) ' bf call flt_runga2', myIter |
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CALL TIMER_START('FLOATS RUNGA2 [FLT LOOP]',myThid) |
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CALL FLT_RUNGA2( myTime, myIter, myThid ) |
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CALL TIMER_STOP ('FLOATS RUNGA2 [FLT LOOP]',myThid) |
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c WRITE(0,*) ' af call flt_runga2', myIter |
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#else |
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c WRITE(0,*) ' bf call flt_runga4', myIter |
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CALL TIMER_START('FLOATS RUNGA4 [FLT LOOP]',myThid) |
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CALL FLT_RUNGA4( myTime, myIter, myThid ) |
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CALL TIMER_STOP ('FLOATS RUNGA4 [FLT LOOP]',myThid) |
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c WRITE(0,*) ' af call flt_runga4', myIter |
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#endif |
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|
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C check if exchanges between tiles are necessary |
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|
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c IF (Nx .NE. sNx .OR. Ny .NE. sNy) THEN |
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CALL TIMER_START('FLOATS EXCHG [FLT LOOP]',myThid) |
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CALL FLT_EXCHG( myTime, myIter, myThid ) |
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CALL TIMER_STOP ('FLOATS EXCHG [FLT LOOP]',myThid) |
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c ENDIF |
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|
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C store profiles every flt_int_prof time steps: |
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C and move floats up and down |
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|
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IF ( MOD(myTime,flt_int_prof).EQ.0. ) THEN |
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CALL TIMER_START('FLOATS UP [FLT LOOP]',myThid) |
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CALL FLT_UP( myTime, myIter, myThid ) |
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CALL TIMER_STOP ('FLOATS UP [FLT LOOP]',myThid) |
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ENDIF |
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|
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c WRITE(0,*) ' bf call flt_down', myIter |
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CALL TIMER_START('FLOATS DOWN [FLT LOOP]',myThid) |
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CALL FLT_DOWN( myTime, myIter, myThid ) |
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CALL TIMER_STOP ('FLOATS DOWN [FLT LOOP]',myThid) |
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c WRITE(0,*) ' af call flt_down', myIter |
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|
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C store particles every flt_int_traj timesteps: |
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|
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IF ( MOD(myTime,flt_int_traj).EQ.0. ) THEN |
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c WRITE(0,*) ' bf call flt_traj', myIter |
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CALL TIMER_START('FLOATS TRAJ [FLT LOOP]',myThid) |
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CALL FLT_TRAJ( myTime, myIter, myThid ) |
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CALL TIMER_STOP ('FLOATS TRAJ [FLT LOOP]',myThid) |
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c WRITE(0,*) ' af call flt_traj', myIter |
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ENDIF |
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|
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RETURN |
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END |
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