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    NOAA is about to make some big changes to its global weather model

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    • D
      dootsonfire last edited by

      So what is the grid resolution? Windy still says GFS @ 22km but isn’t FV3 @ 13km?

      1 Reply Last reply Reply Quote 2
      • Tomber42
        Tomber42 Moderator @TomSlavkovsky last edited by

        @TomSlavkovsky said in NOAA is about to make some big changes to its global weather model:

        @idefix37 yes, we are now using GFS FV3

        You should clarify that in the text on the windy page if you click at clock symbol

        Gkikas LGPZ anthony10 2 Replies Last reply Reply Quote 3
        • Gkikas LGPZ
          Gkikas LGPZ Moderator @Tomber42 last edited by

          @Tomber42
          As I see the wind (or temperature) field over rough terrain (mountains)
          I believe that GFS is (still) at 22km resolution.

          idefix37 1 Reply Last reply Reply Quote 1
          • idefix37
            idefix37 Sailor Moderator @Gkikas LGPZ last edited by idefix37

            @Gkikas-LGPZ
            @dootsonfire
            @Tomber42
            I have got some information from weather specialists and they confirm that:

            • the old GFS v 14 had already a native resolution of 13km same as the new GFS FV3 v 15. This is the computational resolution.
              It is confirmed by NOAA :
              « GFS Version 15.1 maintains a horizontal resolution of 13 km and has 64 levels in the vertical extending up to 0.2 hPa »
            • The old GFS was dispatched to users by GRIB files with a 0.25° resolution. And this is not changed with the new GFS FV3 v 15.

            247D2E4C-0231-43E8-B073-6C12480714FE.jpeg

            Note that 0.25° is close to 27 km, when 23 km is 0.2°

            1 Reply Last reply Reply Quote 1
            • anthony10
              anthony10 @Tomber42 | Premium last edited by

              @Tomber42 I would also like to see the FV3 being shown in the Clock info panel, something like (GFS - FV3) just to be more clear. :)

              1 Reply Last reply Reply Quote 2
              • RandyBonnette
                RandyBonnette last edited by RandyBonnette

                Hello guys,

                Here's where you can get more information about FV3-GFS new model: Significant information on the FV3-GFS https://www.emc.ncep.noaa.gov/users/meg/fv3gfs/official and select model (real-time): https://data1.gfdl.noaa.gov/fvGFS/fvGFS_products.php Or find the Pivotalweather portal. You can compare the data there too.

                B 1 Reply Last reply Reply Quote 0
                • B
                  BillGIllian @RandyBonnette last edited by

                  @RandyBonnette said in NOAA is about to make some big changes to its global weather model:

                  guys,
                  Here's where you can get more information about FV3-GFS new model: Significant information on the FV3-GFS https://www.emc.ncep.noaa.gov/users/meg/fv3gfs/website and select model (real-time): https://data1.gfdl.noaa.gov/fvGFS/fvGFS_products.php Or find the Pivotalweather portal. You can compare the data there too.

                  Thanks for recommendations

                  1 Reply Last reply Reply Quote 0
                  • J
                    JamesWilliam30 Banned last edited by

                    This post is deleted!
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                    • M
                      masstexting Banned last edited by

                      This post is deleted!
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                      • J
                        jamescrane last edited by

                        Hey Randy thanks for your reply!

                        1 Reply Last reply Reply Quote 0
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