Unidata GEMPAK 7.3.1

GEMPAK 7.3.1 is available as source code, 64-bit Linux binaries, and an OS X binary tarball. The most significant updates in this release are to GEMPAK's Python scripts which retrieve data from an AWIPS EDEX server.

7.3.1 binary and source code releases are available at

• https://www.unidata.ucar.edu/downloads/gempak/
• https://github.com/Unidata/gempak/releases

Both a standard binary and a version built against Python 2.7 for use with the python-awips package (see: https://python-awips.readthedocs.io) are available. Please consult the updated install instructions at https://www.unidata.ucar.edu/software/gempak/doc/install.html for more information.

How to retrieve AWIPS data with GEMPAK?

If you have installed gempak-python and python-awips, or built GEMPAK from source against python 2.7:

• Set/change the EDEX server defined in Gemenviron.profile or Gemenviron (default is edex-cloud.unidata.ucar.edu)
• Ensure that libpython2.7.so* is found (e.g. ldd $OS_BIN/gdinfo)
• Entries in datatype.tbl are used to define AWIPS grid names

grep ^A2 $GEMTBL/config/datatype.tbl
A2METAR      AWIPSDB                   metar.xml    	
A2SYNOP      AWIPSDB                   synop.xml    	
A2UAIR       AWIPSDB                   uair.xml     	
A2GFS        AWIPSDB                   gfs.xml      	
A2GFS20      AWIPSDB                   gfs20.xml    	
A2GFS80      AWIPSDB                   gfs80.xml    	
A2RAP        AWIPSDB                   rap.xml      	
A2NAM        AWIPSDB                   nam.xml      	
A2NamDNG     AWIPSDB                   namdng.xml   	
A2NAVGEM     AWIPSDB                   navgem.xml   	
A2DGEX       AWIPSDB                   dgex.xml     	
A2HRRR       AWIPSDB                   hrrr.xml     	
A2CMC        AWIPSDB                   cmc.xml      	
A2ECMWF      AWIPSDB                   ecmwf.xml    	
A2MRMS       AWIPSDB                   mrms.xml     	
A2RTMA       AWIPSDB                   rtma.xml     	
A2URMA       AWIPSDB                   urma.xml  

These xml files are found in `$GEMTBL/data-access/`, and each defines the AWIPS/EDEX grid name used (e.g. dbkey='GFS20' for gfs20.xml)

An example in GDINFO:

GDFILE   = A2GFS20
LSTALL   = YES  	
OUTPUT   = t  	
GDATTIM  = last  	
GLEVEL   = 500  	
GVCORD   = pres  	
GFUNC    = all  
 
GRID FILE: AWIPSDB/gfs20.xml/161129/1200F240 

GRID NAVIGATION:          
  PROJECTION:          LCC                        
  ANGLES:              25.0   -95.0    25.0     
  GRID SIZE:           369     257     
  LL CORNER:           12.1900 -133.4590     
  UR CORNER:           57.2894  -49.3853     

GRID ANALYSIS BLOCK:      
  ANALYSIS TYPE:       BARNES       
  DELTAN:              1.000     
  DELTAX:              -9999.000     
  DELTAY:              -9999.000    
  GRID AREA:           -90.00 -180.00   90.00  180.00       
  EXTEND AREA:         -90.00 -180.00   90.00  180.00       
  DATA AREA:           0.00    0.00    0.00    0.00   
  
Number of grids in file:   258     

Maximum number of grids in file:    258      

NUM       TIME1              TIME2           LEVL1 LEVL2  VCORD PARM    
138     161129/1200F240                        500         PRES TMPK            
139     161129/1200F240                        500         PRES UREL            
140     161129/1200F240                        500         PRES RELH            
141     161129/1200F240                        500         PRES HGHT            
142     161129/1200F240                        500         PRES OMEG            
143     161129/1200F240                        500         PRES VREL            
144     161129/1200F240                        500         PRES HGHT5           
145     161129/1200F240                        500         PRES AVOR