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

dootsonfire

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

Tomber42

@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

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

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.

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

anthony10

@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. :)

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.

BillGIllian

@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

JamesWilliam30

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masstexting

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jamescrane

Hey Randy thanks for your reply!