SFEDIT adds or changes data in a surface file using a sequential text file. INPUT PARAMETERS SFEFIL *Surface edit file SFFILE *Surface data file PROGRAM DESCRIPTION SFEDIT adds information from a sequential text file to an existing GEMPAK surface file. The program may be used to add new data to a file or to change existing values. The output file must already exist. The data to be added must reside in a text file, SFEFIL. This file can be created by specifying F as the output device in GEMPAK program SFLIST or by generating the file with a text editor. A text editor may be used to change the file. The parameters to be edited must be specified at the beginning of the edit file, for example: PARM=TMPF;DWPF. Only parameters stored in the output file can be edited. Parameters that have character values, such as WTHR, are actually stored as real numbers. Thus, the numeric weather code must be used. Station information, such as the latitude, SLAT, cannot be changed using this program. Rather, these changes can be made using the GEMPAK program, SFSTNS. The data follow the parameter list. Each data listing must include the time, followed by the station character or numeric identifier followed by the data. If data are missing, the current missing data value, -9999., must be used. Blank fields will not be recognized. If a station or time does not exist in the output file it will be added to the file. If stations are added, the GEMPAK program SFSTNS can be used to add station latitudes, longitudes and elevations. EXAMPLES 1. Change values of TMPF and DWPF in the file SFCDATA.DAT. SFEFIL = sflist.fil SFFILE = sfcdata.dat The file SFLIST.FIL follows. Note that the title line is ignored. PARM = TMPF;DWPF STN YYMMDD/HHMM TMPF DWPF BWI 850426/0400 55.40 42.80 SBY 850426/0400 62.62 55.40 BGJ 850426/0400 55.40 42.80 The program replaces the temperature and dewpoint for stations BWI, SBY and NHK at the given time values in output file SFCDATA.DAT. ERROR MESSAGES [SFEDIT +2] Station ... cannot be added to the file. [SFEDIT -1] Fatal error initializing TAE. [SFEDIT -2] Fatal error reading TAE parameters. [SFEDIT -3] Edit file ... cannot be opened. [SFEDIT -5] PARM keyword not found. [SFEDIT -6] Too many parameters to edit. [SFEDIT -7] Time ... cannot be added to data set. [SFEDIT -8] Parameter ... is not in the data set. [SFEDIT -9] SFEDIT cannot continue with invalid parameters.