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GEMPAK: General Meteorological Package. GEMPAK: General Meteorological Package. Used in conjunction with AWIPS operationally (NWS, SPC, HPC, etc.) Uses gridded or observed data to create -Isobaric/isentropic/ isertelic plots of model and/or reanalysis data

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GEMPAK: General Meteorological Package

Used in conjunction with AWIPS operationally (NWS, SPC, HPC, etc.)

Uses gridded or observed data to create

-Isobaric/isentropic/isertelic plots of model and/or reanalysis data

-Surface observations from METAR data

-Upper air observations from RAOB data

-Soundings from RAOB data or model data

-Time-height sections

-Radar

-Satellite

-Meteograms

-and more…

Can also create your own variables or vertical levels within a grid file

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GEMPAK: General Meteorological Package

Web examples…

Surface observations

Upper air observations

Soundings

UAlbany WRF graphics (R. Lazear)

Dynamic Tropopause / 2 panel maps (R. Lazear)

Kyle Griffin’s GFS/Analyses

Other variables used in synoptic and mesoscale analysis (J. Kenyon)

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GEMPAK: General Meteorological Package

Where is the data?

/data1/gempak : surface and upper air data

/data1/gempak/hds (or $HDS/) : model data

/data1/archive/gempak : archive back one year

/data7/nmc2 : GEFS and various GFS/NAM grids

/ncep/ncep_ncar : Reanalysis data 1948-current

/gfs1/1deganl : 1-degree GFS analyses, 2004-current

Web:

Iowa State GEMPAK archive

NOMADS server (NCDC)

-Must use dcgrib to convert data from grib2 to gempak format (.gem)

-Sample script: /share/ralazear/wget_cfsr.sc (H. Attard)

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GEMPAK: General Meteorological Package

Now to take a look at the GEMPAK interface . . .

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GEMPAK: General Meteorological Package

GEMPAK help is available!

phelp

-Works on any variable and GEMPAK program

GEMPAK user manual