Data Transfer: NCEP OFS Forecasts

g2sub V1.1

g2subset (grib2 subset) allows you to subset (time, field, level, or region) a GRIB2 file and sends you the result
Directory:   /ofs.20170301

**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 m below sea level    1000 m below sea level    100 m below sea level    10 m below sea level    1100 m below sea level    1200 m below sea level    125 m below sea level    1300 m below sea level    1400 m below sea level    1500 m below sea level    150 m below sea level    1750 m below sea level    1 hybrid level - 2 hybrid level    2000 m below sea level    200 m below sea level    20 m below sea level    2500 m below sea level    250 m below sea level    3000 m below sea level    300 m below sea level    30 m below sea level    3500 m below sea level    350 m below sea level    3 m below sea level    4000 m below sea level    400 m below sea level    4500 m below sea level    450 m below sea level    5000 m below sea level    500 m below sea level    50 m below sea level    5500 m below sea level    550 m below sea level    6000 m below sea level    600 m below sea level    650 m below sea level    6 m below sea level    700 m below sea level    75 m below sea level    800 m below sea level    900 m below sea level    entire ocean (considered as a single layer)    surface  

Select the variables desired:

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:,