Trajectories Intersecting Terrain


83 09 01 00

   start time

45.0 -125.0 500.0

   start location

72

   trajectory duration

fdump

   output file

isobaric

RP198309.gbl

   meteorology

tm_terr = 1

   namelist variable

traj_isob_control.txt

   save control file

traj_isob_setup.txt

   save setup file




Backward Trajectory from Endpoint

49.573 -93.315 967.8

   back start location

83 09 04 00

   back start time

bdump

   output file




Overlay Forward and Backward




Model versus Actual Terrain

Imperfect Options

  • Start trajectory at T from a height above model terrain corresponding to height of actual ground level above model terrain
  • Start trajectory at B from a height above the actual ground equal to a height above model terrain (M) so that it can be affected by PBL processes