Forecasting Practicum (Radio)

List of GEMPAK Programs


based on GEMPAK User's Guide, version 5.6.G, June 2002

GD Programs
GDBIINT interpolates grids from one projection to another
GDCFIL creates a GEMPAK grid file
GDCNTR draws contour lines through a scalar grid
GDCROSS displays a vertical cross section of scalar and/or vector grids
GDDELT deletes grids from GEMPAK grid files
GDDIAG computes a scalar diagnostic grid and adds it to the grid file
GDEDIT reads grids from a sequential edit file and adds them to a GEMPAK grid file
GDGRIB computes a scalar diagnostic grid and adds it to a GRIB file
GDGSFC computes grid data and interpolates to stations in a GEMPAK surface file
GDINFO lists information about GEMPAK grid files
GDLIST lists data from a scalar grid
GDMAP plots data from a scalar grid
GDMOD moves grids from one GEMPAK grid file to another
GDOBSCNT creates a gridded sampling of the number of surface observations within a specified radius of each grid point
GDOMEG computes grids of vertical motion and adds them to the grid file
GDPLOT draws contour lines through scalar grid and/or wind barb or arrows through vector grids; multiple sets of contours and vectors can be generated for each frame
GDPLOT draws contour lines through scalar grids and/or wind barbs or streamlines through vector grids; multiple sets of contours, vectors and/or streamlines can be generated for each frame
GDPROF draws profiles of a scalar grid and/or a vector grid
GDRADR creates a gridded composite of NEXRAD level III products
GDSTAT computes statistics on a time series of scalar grids
GDSTREAM draws streamlines through a vector grid
GDTHGT draws contours and wind barbs or arrows on a time section at a point within a grid
GDTSER draws a time series of a scalar at a single level
GDVINT performs interpolation between vertical coordinates
GDWIND displays a vector grid using wind barbs or arrows
GP Programs
GPANOT will allow the user to place objects at any location on the current graphic device
GPBOX draws a box around a region
GPCLEAR clears the current graphics device
GPCLOSE closes the specified graphics output window or file
GPCOLOR changes the colors on a color device
GPEND terminates the GEMPLT subprocesses
GPFRONT a version of GPMAP that plots map symbols interpreted from the ASUS1 bulletins; forecast front positions from FSUS2 bulletins can be plotted by specifying the forecast hour desired from the bulletin
GPKGRF generates the track error watch/warn plot for TPC
GPLTLN draws a map, latitude/longitude lines with a selected marker, and various image and graphic products
GPMAP draws a map, latitude/longitude lines, and various image and graphic products
GPRCM a version of GPMAP that plots Radar Coded Message (RCM) bulletins
GPTEXT draws the contents of a text file to the output device
GPTPC generates four hurricane graphics for TPC
GPTRAJ computes trajectories for gridded data files
GPWARN a version of GPMAP that plots filled county/zone regions from reports which use the universal generic county/zone identifier lines
Miscellaneous Programs
ACPROF draws a profile of ACARS data
CPCGSTN searches for stations located inside specified areas from a Vector Graphics File
GRPHGD generates a grid from contours drawn via NMAP product generations
NAGRIB converts gridded data in GRIB files to GEMPAK gridded data
NAMSND transfers model profile output in BUFR to GEMPAK sounding and surface data files
NEX2GINI creates a GINI format image composite of NEXRAD level III products
SECTOR subsets a GINI satellite image in area and pixel resolution
OA Programs
OABOX draws a box around an objective analysis region
OABSFC performs a Barnes objective analysis on surface data
OABSND performs a Barnes objective analysis on upper air data
OAGRID creates a GEMPAK grid file which can be used in a Barnes objective analysis
SF Programs
SFCFIL creates a new GEDMPAK surface file
SFCHCK reads a GEDMPAK surface data file and produces a table of stations and an indicator showing whether each station reported data at each time in the file
SFCNTR plots surface station data on a map and optionally contours one of the fields being plotted
SFDELT deletes data from a surface data file
SFEDIT adds or changes data in a surface file using a sequential text file
SFGRAM draws a meteogram for surface data
SFL604 lists data from a GEMPAK surface file in a fixed format
SFLIST lists surface data from a GEMPAK surface data file
SFMAP plots surface station data on a map
SFMOD moves selected surface data from an input surface file to an output surface file
SFSTNS modifies the station information in a surface file
SFVGSF adds or changes data in a surface file using the elements found in a Vector Graphics File
SN Programs
SNCFIL creates a new GEMPAK sounding file
SNCROSS draws cross sections through sounding data
SNCROSS2 draws cross sections through sounding data
SNDELT deletes data from a sounding data file
SNEDIT adds data in a sequential edit file to a sounding file
SNHODO draws a hodograph of upper air data
SNLIST lists upper air data from a sounding file for specified vertical levels and stations
SNMAP plots sounding data on a map
SNMOD moves selected sounding data from an input sounding file to an output sounding file
SNPROF draws profiles of upper air data
SNSTNS modifies the station information in an upper air file
SNTSER draws a time series at a sounding station

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last updated on 12/01/03