NCREAD reading GRIB2 files?

For my understanding these are GRIB2 files... any potential reasons they're not working? Maybe I misunderstand that NCREAD cannot read this format? Any help would be appreciated

 url = 'ftp://ftp.ncep.noaa.gov/pub/data/nccf/com/gfs/prod/gfs.2015011412/gfs.t12z.pgrb2.0p25.f120'

data = ncread(url,'APCP');

Answer 1

[Jacob Halbrooks]

As of R2023b, you can read data from a GRIB file (.grb, .grib, .grib2) using the Mapping Toolbox readgeoraster function. You can also get information about a GRIB file by using the georasterinfo function. These functions were enhanced in R2024b to support GRIB files that use CCSDS compression.

Answer 2

[Kelly Kearney]

I don't believe ncread can read files via FTP, only OPeNDAP. You'll have to save the file locally before you can read it.

[Ryan]

Hmmmm still trouble loading it even when I download to a local drive..

[Kelly Kearney]

Also, you'll need to convert the file to netcdf... unlike NCL, Matlab doesn't read in GRIB files natively.