Data Transfer: GFS Ensemble Forecasts (0.25 degree grid)

g2sub V1.1

g2subset (grib2 subset) allows you to subset (time, field, level, or region) a GRIB2 file and sends you the result
 

Subdirectory

   gefs.20210123
   gefs.20210122
   gefs.20210121
   gefs.20210120

**NEW** Select one file only (size in bytes)

GRIB Filter

For GRIB data you have to option to filter the data.

Extract Levels and Variables

You may select some or all levels and variables. The selections below represent common choices which may or may not be relevant to the files that you have selected. For example choosing RH (relative humidity) would be pointless in file of sea-surface temperatures. In addition, not all possibilities are allowed. For example, suppose you only want the virtual temperature at the tropopause at 01Z. In this case you'd have to transfer the entire file.

For GRIB-2 data only.

Select the levels desired:
 all     0-0.1 m below ground    10 m above ground    180-0 mb above ground    2 m above ground    3000-0 m above ground    entire atmosphere    entire atmosphere (considered as a single layer)    mean sea level    surface    top of atmosphere  

Select the variables desired:
 all     APCP    CAPE    CFRZR    CICEP    CIN    CRAIN    CSNOW    DLWRF    DPT    DSWRF    GUST    HLCY    ICETK    LHTFL    PRES    PRMSL    PWAT    RH    SHTFL    SNOD    SOILW    TCDC    TMAX    TMIN    TMP    TSOIL    UGRD    ULWRF    USWRF    VGRD    WEASD  

Extract Subregion

File transfer times can be reduced by only transferring a subregion. You can use this section to extract a geographic subsection from a most GRIB files. Use negative numbers for south and west.
make subregion  left longitude right longitude
top latitude bottom latitude

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g2sub 1.1.0.beta-6 and comments: Wesley.Ebisuzaki@noaa.gov, Jun.Wang@noaa.gov