| 1 |
C $Header: /u/gcmpack/MITgcm/pkg/flt/flt_main.F,v 1.7 2010/12/22 21:24:58 jahn Exp $ |
| 2 |
C $Name: $ |
| 3 |
|
| 4 |
#include "FLT_OPTIONS.h" |
| 5 |
|
| 6 |
C ================================================================== |
| 7 |
C |
| 8 |
C Float Package for the MIT Model |
| 9 |
C |
| 10 |
C Main Routines: |
| 11 |
C |
| 12 |
C o flt_main - Integrates the floats forward and stores |
| 13 |
C positions and vertical profiles at specific |
| 14 |
C time intervals. |
| 15 |
C o flt_readparms - Read parameter file |
| 16 |
C o flt_init_fixed - Initialise fixed |
| 17 |
C o flt_init_varia - Initialise the floats |
| 18 |
C o flt_restart - Writes restart data to file (=> renamed: flt_write_pickup) |
| 19 |
C |
| 20 |
C Second Level Subroutines: |
| 21 |
C |
| 22 |
C o flt_runga2 - Second order Runga-Kutta inetgration (default) |
| 23 |
C o flt_exchg - Does a new distribution of floats over tiles |
| 24 |
C after every integration step. |
| 25 |
C o flt_up - moves float to the surface (if flag is set) |
| 26 |
C and stores profiles to file |
| 27 |
C o flt_down - moves float to its target depth (if flag is set) |
| 28 |
C o flt_traj - stores positions and data to file |
| 29 |
C o flt_interp_linear - contains blinear interpolation scheme |
| 30 |
C o flt_mapping - contains mapping functions & subroutine |
| 31 |
C o flt_mdsreadvector - modified mdsreadvector to read files |
| 32 |
C |
| 33 |
C ToDo: |
| 34 |
C |
| 35 |
C o avoid exchanges when arrays empty |
| 36 |
C o 3D advection of floats |
| 37 |
C |
| 38 |
C ================================================================== |
| 39 |
C |
| 40 |
C Documentation: |
| 41 |
C |
| 42 |
C To be made.... |
| 43 |
C |
| 44 |
C |
| 45 |
C started: Arne Biastoch abiastoch@ucsd.edu 10-Jan-2000 |
| 46 |
C (adopted from version written by Detlef Stammer |
| 47 |
C for the old model code) |
| 48 |
C |
| 49 |
C changed: Arne Biastoch abiastoch@ucsd.edu 21-JUN-2001 |
| 50 |
C |
| 51 |
C ================================================================== |
| 52 |
|
| 53 |
|
| 54 |
SUBROUTINE FLT_MAIN ( |
| 55 |
I myTime, myIter, myThid ) |
| 56 |
|
| 57 |
C ================================================================== |
| 58 |
C SUBROUTINE FLT_MAIN |
| 59 |
C ================================================================== |
| 60 |
C o This routine steps floats forward in time and samples the model |
| 61 |
C state at float position every flt_int_traj time steps. |
| 62 |
C Also moves the float up and down and samples vertical profiles. |
| 63 |
C |
| 64 |
C o Uses 2nd or fourth order runga-kutta |
| 65 |
C o Spatial interpolation is bilinear close to boundaries and otherwise |
| 66 |
C a polynomial interpolation. |
| 67 |
C o Particles are kept in grid space (with position of dp taken as |
| 68 |
C x(south), y(east) grid cell point) |
| 69 |
C o Calls profile every flt_int_prof time steps; in that event the |
| 70 |
C profile over the whole water column is written to file and the |
| 71 |
C float might be moved upwards to the surface (depending on its |
| 72 |
C configuration). |
| 73 |
C ================================================================== |
| 74 |
|
| 75 |
C !USES: |
| 76 |
IMPLICIT NONE |
| 77 |
|
| 78 |
#include "EEPARAMS.h" |
| 79 |
#include "SIZE.h" |
| 80 |
#include "FLT_SIZE.h" |
| 81 |
#include "FLT.h" |
| 82 |
|
| 83 |
C == routine arguments == |
| 84 |
C myThid - thread number for this instance of the routine. |
| 85 |
_RL myTime |
| 86 |
INTEGER myIter, myThid |
| 87 |
|
| 88 |
C integration of the float trajectories |
| 89 |
|
| 90 |
#ifdef FLT_SECOND_ORDER_RUNGE_KUTTA |
| 91 |
c WRITE(0,*) ' bf call flt_runga2', myIter |
| 92 |
CALL TIMER_START('FLOATS RUNGA2 [FLT LOOP]',myThid) |
| 93 |
CALL FLT_RUNGA2( myTime, myIter, myThid ) |
| 94 |
CALL TIMER_STOP ('FLOATS RUNGA2 [FLT LOOP]',myThid) |
| 95 |
c WRITE(0,*) ' af call flt_runga2', myIter |
| 96 |
#else |
| 97 |
c WRITE(0,*) ' bf call flt_runga4', myIter |
| 98 |
CALL TIMER_START('FLOATS RUNGA4 [FLT LOOP]',myThid) |
| 99 |
CALL FLT_RUNGA4( myTime, myIter, myThid ) |
| 100 |
CALL TIMER_STOP ('FLOATS RUNGA4 [FLT LOOP]',myThid) |
| 101 |
c WRITE(0,*) ' af call flt_runga4', myIter |
| 102 |
#endif |
| 103 |
|
| 104 |
C check if exchanges between tiles are necessary |
| 105 |
|
| 106 |
c IF (Nx .NE. sNx .OR. Ny .NE. sNy) THEN |
| 107 |
CALL TIMER_START('FLOATS EXCHG [FLT LOOP]',myThid) |
| 108 |
#ifdef ALLOW_EXCH2 |
| 109 |
CALL FLT_EXCH2( myTime, myIter, myThid ) |
| 110 |
#else |
| 111 |
CALL FLT_EXCHG( myTime, myIter, myThid ) |
| 112 |
#endif |
| 113 |
CALL TIMER_STOP ('FLOATS EXCHG [FLT LOOP]',myThid) |
| 114 |
c ENDIF |
| 115 |
|
| 116 |
C store profiles every flt_int_prof time steps: |
| 117 |
C and move floats up and down |
| 118 |
|
| 119 |
IF ( MOD(myTime,flt_int_prof).EQ.0. ) THEN |
| 120 |
CALL TIMER_START('FLOATS UP [FLT LOOP]',myThid) |
| 121 |
CALL FLT_UP( myTime, myIter, myThid ) |
| 122 |
CALL TIMER_STOP ('FLOATS UP [FLT LOOP]',myThid) |
| 123 |
ENDIF |
| 124 |
|
| 125 |
c WRITE(0,*) ' bf call flt_down', myIter |
| 126 |
CALL TIMER_START('FLOATS DOWN [FLT LOOP]',myThid) |
| 127 |
CALL FLT_DOWN( myTime, myIter, myThid ) |
| 128 |
CALL TIMER_STOP ('FLOATS DOWN [FLT LOOP]',myThid) |
| 129 |
c WRITE(0,*) ' af call flt_down', myIter |
| 130 |
|
| 131 |
C store particles every flt_int_traj timesteps: |
| 132 |
|
| 133 |
IF ( MOD(myTime,flt_int_traj).EQ.0. ) THEN |
| 134 |
c WRITE(0,*) ' bf call flt_traj', myIter |
| 135 |
CALL TIMER_START('FLOATS TRAJ [FLT LOOP]',myThid) |
| 136 |
CALL FLT_TRAJ( myTime, myIter, myThid ) |
| 137 |
CALL TIMER_STOP ('FLOATS TRAJ [FLT LOOP]',myThid) |
| 138 |
c WRITE(0,*) ' af call flt_traj', myIter |
| 139 |
ENDIF |
| 140 |
|
| 141 |
RETURN |
| 142 |
END |
Parent Directory
| 
Revision Log
| 
Revision Graph