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subroutine vtransform(vint,dydt)
***********************************************************************
* *
* TRAJECTORY MODEL SUBROUTINE VTRANSFORM *
* *
***********************************************************************
* *
* AUTHOR: G. WOTAWA *
* DATE: 1994-02-14 *
* LAST UPDATE: 1996-03-21 *
* Runtime optimization *
* *
***********************************************************************
* *
* DESCRIPTION: This subroutine transforms the interpolated meridional *
* wind <vint> [m/s] to <dydt> [grid units/time unit] *
* ythelp help variable computed in readgrid *
* *
***********************************************************************
* *
* INPUT: *
* *
* vint interpolated meridional wind component [m/s] *
* *
***********************************************************************
* *
* OUTPUT: *
* *
* dydt total differential in y direction [grid units/time unit] *
* *
***********************************************************************
*
include 'includepar'
include 'includecom'
real vint,dydt
dydt=vint*ythelp
return
end
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