Unidata Developer's Blog

New GEMPAK Surface Station File for 7.1.0

29 April 2014

The upcoming release of GEMPAK 7.1.0 will include a new global surface METAR table (sfstns.tbl), created by a new Python decoder available at
https://github.com/mjames-upc/gempak-stations
The table is created from the NCAR / RAL master file:
https://weather.rap.ucar.edu/surface/stations.txt
The new GEMPAK table is available now at
https://raw.githubusercontent. com/mjames-upc/gempak-stations/master/sfstns.tbl

$GEMTBL/stns/geog.tbl will also be updated to be consistent with the NCAR / RAL file. The new GEMPAK geog.tbl is available at:
https://raw.githubusercontent. com/Unidata/gempak/master/gempak/tables/stns/geog.tbl

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Quickly create Makefile entries for all objects in a project using Sed

14 January 2014

ls *.f | sed 's/\.f/\.o) \\/' | sed 's/^/\t\$(ALIB)(/'

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Creating and Using a Region-Of-Interest Mask

08 June 2013

A vgf file is created using the interactive product generation tools within NMAP2. A closed line is drawn enclosing the region of interest, and a text label is grouped with the line assigning a value of 1 to the contour.

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Displaying Ensemble Grids

07 June 2013

GEMPAK provides a special set of functions, all of which are named beginning with ENS_, to do specific calculations over multiple members of an ensemble. The constitution of the ensemble is specified as a GDFILE entry by listing file names and aliases, separated by commas and enclosed in curly brackets {}. For specific functions available see the GPARM online documentation.

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