URL for downloading new weather data seems wrong

[jcnesci]

While trying to use grib2json to get new weather data from NOMADS, I noticed that the URL format shown in the README here (and in the grib2json repo's README) doesn't load.

For example, this URL http://nomads.ncep.noaa.gov/cgi-bin/filter_gfs.pl?file=gfs.t00z.pgrb2.1p00.f000&lev_10_m_above_ground=on&var_UGRD=on&var_VGRD=on&dir=%2Fgfs.${20140101}00 produces a 404 page that says: "Not Found: The requested URL /cgi-bin/filter_gfs.pl was not found on this server."

While I try to figure out how the NOMADS file serving format has changed, I figured I'd let people know here, and if someone already knows the new format then they can provide it.

[mschreib28]

Is this what you're looking for?

http://nomads.ncep.noaa.gov/cgi-bin/filter_gfs_1p00.pl

[polyestersuede]

This is the command you'll need:

curl "http://nomads.ncep.noaa.gov/cgi-bin/filter_gfs_1p00.pl?file=gfs.t00z.pgrb2.1p00.f000&lev_10_m_above_ground=on&var_UGRD=on&var_VGRD=on&dir=%2Fgfs.${YYYYMMDD}00" -o gfs.t00z.pgrb2.1p00.f000

[michaelnarlock]

Hmmm...that command results in 404 for me.

[gustavost26]

Este é o comando que você precisa:

curl "http://nomads.ncep.noaa.gov/cgi-bin/filter_gfs_1p00.pl?file=gfs.t00z.pgrb2.1p00.f000&lev_10_m_above_ground=on&var_UGRD=on&var_VGRD=on&dir=%2Fgfs.${YYYYMMDD}00" -o gfs.t00z.pgrb2.1p00.f000

I downloaded the following gfs.t00z.pgrb2.1p00.f000 config file shown in github.

But when executing the following command: sh grib2json -d -n -o current-wind-surface-level-gfs-1.0.json gfs.t00z.pgrb2.1p00.f000

And presenting the following error:

java.io.IOException: java.io.IOException: Cant read gfs.t00z.pgrb2.1p00.f000: not a valid CDM file. at ucar.nc2.NetcdfFile.open(NetcdfFile.java:425) at ucar.nc2.NetcdfFile.open(NetcdfFile.java:392) at ucar.nc2.NetcdfFile.open(NetcdfFile.java:379) at ucar.nc2.NetcdfFile.open(NetcdfFile.java:367) at net.nullschool.grib2json.Grib2Json.write(Grib2Json.java:114) at net.nullschool.grib2json.Launcher.main(Launcher.java:75) Caused by: java.io.IOException: Cant read gfs.t00z.pgrb2.1p00.f000: not a valid CDM file. at ucar.nc2.NetcdfFile.open(NetcdfFile.java:803) at ucar.nc2.NetcdfFile.open(NetcdfFile.java:422) ... 5 more

I noticed that the file I downloaded according to the github tutorial does not have the extension .grb2

How do I download a file with this extension for possible conversion to json?

Sources: https://github.com/cambecc/earth https://github.com/cambecc/grib2json

[gustavost26]

Este é o comando que você precisa: curl "http://nomads.ncep.noaa.gov/cgi-bin/filter_gfs_1p00.pl?file=gfs.t00z.pgrb2.1p00.f000&lev_10_m_above_ground=on&var_UGRD=on&var_VGRD=on&dir=%2Fgfs.${YYYYMMDD}00" -o gfs.t00z.pgrb2.1p00.f000

I downloaded the following gfs.t00z.pgrb2.1p00.f000 config file shown in github.

But when executing the following command: sh grib2json -d -n -o current-wind-surface-level-gfs-1.0.json gfs.t00z.pgrb2.1p00.f000

And presenting the following error:

java.io.IOException: java.io.IOException: Cant read gfs.t00z.pgrb2.1p00.f000: not a valid CDM file. at ucar.nc2.NetcdfFile.open(NetcdfFile.java:425) at ucar.nc2.NetcdfFile.open(NetcdfFile.java:392) at ucar.nc2.NetcdfFile.open(NetcdfFile.java:379) at ucar.nc2.NetcdfFile.open(NetcdfFile.java:367) at net.nullschool.grib2json.Grib2Json.write(Grib2Json.java:114) at net.nullschool.grib2json.Launcher.main(Launcher.java:75) Caused by: java.io.IOException: Cant read gfs.t00z.pgrb2.1p00.f000: not a valid CDM file. at ucar.nc2.NetcdfFile.open(NetcdfFile.java:803) at ucar.nc2.NetcdfFile.open(NetcdfFile.java:422) ... 5 more

I noticed that the file I downloaded according to the github tutorial does not have the extension .grb2

How do I download a file with this extension for possible conversion to json?

Sources: https://github.com/cambecc/earth https://github.com/cambecc/grib2json

I downloaded the correct file to convert to json through this page: https://nomads.ncep.noaa.gov/cgi-bin/filter_gfs_1p00.pl http://nomads.ncep.noaa.gov/cgi-bin/filter_gfs_1p00.pl?dir=%2Fgfs.2018122700