! !----------------------------------------------------------------------- ! ! NAMELIST parameters for EXT2ARPS (In arps.input) ! !----------------------------------------------------------------------- ! INTEGER :: iorder ! Order of polynomial used for interpolation ! = 1 Linear ! = 2 Quadratic ! = 3 Cubic INTEGER :: intropt ! Option indicating to interpolate ! perturbation or total variables: ! = 1 Interpolate perturbation variables ! and add to base sounding (default); ! = 2 Interploate total variables (except ! pressure). INTEGER :: nsmooth ! Number of 27-pt (3-D 3 pt) ! smoothing passes after interpolation. ! 1 or 2 recommended. INTEGER :: ext_lbc ! Option to apply lateral boundary conditions ! to the winds. ! = 0 no boundary contitions applied; ! = 1 apply zero-gradient boundary contitions ! (default). INTEGER :: ext_vbc ! Option to apply vertical boundary conditions ! to w. ! = 0 no boundary contitions applied; ! = 1 apply boudary contitions specified ! by tbc & bbc to w (default). INTEGER :: exttrnopt ! Terrain option for output grid: ! = 0 use terrain specified by ternopt ! above (default); ! = 1 interpolate terrain from original grid. INTEGER :: extsfcopt ! Option for near surface interpolation: ! = 0 use pressure level fields (default) ! = 1 use near surface fields available ! (simple interpolation) INTEGER :: extntmrg ! Number of zones to merge for exttrnopt=2 CHARACTER (LEN=256) :: dir_extd ! directory of external data CHARACTER (LEN=256) :: extdname ! Prefix string of external file name. ! Used ONLY for ARPS data input ! The file name should look like: ! extdname.time_string INTEGER :: extdopt ! External data source option ! = 0, ARPS, default ! = 1, NMC RUC (Hybrid) data ! = 2, NMC ETA data ! >= 3, User defined ! (user should provide programs) INTEGER :: extdfmt ! External data format indicator. For ! extdopt=0, see description of hdmpfmt INTEGER :: nextdfil ! number of external data files to process INTEGER :: grdbasopt ! grdbas history file option ! = -1, never write files (LBC run). Output ! from a "t0" run is sufficient. ! = 0, for LBC runs, only the first "extm" ! file produces output. This is a big ! I/O saver if the files aren't used. ! = 1, always write the "grdbas" files. CHARACTER (LEN=29) :: extdtime(50) ! external data times ! format mm-dd-yyyy:hh:mm:ss/HHH:MM:SS ! _initial time_____ /forecast NAMELIST /extdfile/ extdopt,extdfmt,dir_extd,extdname,nextdfil,extdtime, & iorder,nsmooth,ext_lbc,ext_vbc,intropt,exttrnopt, & extntmrg,extsfcopt,grdbasopt