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michaesp |
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SUBROUTINE special (flag,cmd,tra,ntim,ncol,
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> vars,times,param,nparam)
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c ***************************************************************************
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c * *
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c * OUTPUT: flag -> 1 if trajectory is selected, 0 if not *
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c * *
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c * INPUT: cmd <- command string *
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c * tra(ntim,ncol) <- single trajectory: indices time,column *
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c * ntim <- number of times *
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c * ncol <- number of columns (including time,lon,lat,p) *
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c * vars(ncol) <- names of columns *
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c * times(ntim) <- List of times
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c * param(nparam) <- parameter values *
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c * nparam <- number of parameters *
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c * *
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c ***************************************************************************
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implicit none
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c ---------------------------------------------------------------------------
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c Declaration of subroutine parameters
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c ---------------------------------------------------------------------------
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integer flag ! Boolean flag whether trajectory is selected
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character*80 cmd ! Command string
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integer ntim,ncol ! Dimension of single trajectory
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real tra(ntim,ncol) ! Single trajectory
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character*80 vars(ncol) ! Name of columns
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real times(ntim) ! List of times
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integer nparam ! # parameters
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real param(nparam) ! List of parameters
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c ---------------------------------------------------------------------------
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c Declaration of local variables
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c ---------------------------------------------------------------------------
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integer i
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integer ip,i0,i1
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c -------------------------------------------------------------------------- %)
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c SPECIAL:WCB:ascent,first,last %)
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c : Detect Warm Conveyor Belts (WCB); the air stream must ascend at least %)
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c : <ascent=param(1)> hPa between the two times <first=param(2)> and %)
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c : <last=param(3)>. Note, the lowest pressure is allowed to occur at any %)
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c : time between <first> and <last>. %)
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c --------------------------------------------------------------------------- %)
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if ( cmd.eq.'WCB' ) then
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c Reset the flag for selection
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flag = 0
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c Pressure is in the 4th column
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ip = 4
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c Get times
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i0 = 0
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i1 = 0
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do i=1,ntim
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if ( param(2).eq.times(i) ) i0 = i
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if ( param(3).eq.times(i) ) i1 = i
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enddo
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if ( (i0.eq.0).or.(i1.eq.0) ) then
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print*,' ERROR: invalid times in SPECIAL:WCB... Stop'
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stop
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endif
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c Check for ascent
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do i=i0+1,i1
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if ( ( tra(i0,ip)-tra(i,ip) ) .gt. param(1) ) flag = 1
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enddo
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endif
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c ---------------------------------------------------------------------------
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end
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