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There is a lot of weather forecast data available online, such as this one https://www.wetter3.de/animation_dt.html

But as a student, where do I get according raw GFS data instead of images to do my own (poor) data analysis? To give an example: Is raw 500 hPa geopotential height data (see link above) available as a public downloadable file in some specific format or is this paid stuff just for professional organizations?

I found a lot of data here, but I'm not sure if this is the right entry point. https://www.nco.ncep.noaa.gov/pmb/products/gfs/

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You can fetch GFS from NCEP servers directly. It is documented here: https://www.nco.ncep.noaa.gov/pmb/products/gfs/

For example, if you want today's 06 UTC run in 0.25-degree resolution, you would go here and look for the files named gfs.t06z.pgrb2.0p25.f*

You will get the files in the usual GRIB format. If you are unfamiliar with this format a good starting point would be to look at ecCodes from ECMWF (github.com/ecmwf/eccodes). If speed or easier access to the data, is important to you I would encourage you to have a look at gribscan (github.com/gribscan/gribscan)

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  • $\begingroup$ (Other options for decoding include xarray with cfgrib in Python, GrADS, or gempak) $\endgroup$ Jan 13 at 22:43

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