[Wrf-users] About Vtable.GFS After 2015

[Carlos Ross]

Hi Rodrigo

The main difference are these:

|  To  | metgrid  | metgrid | metgrid
|GRIB2|GRIB2|GRIB2|GRIB2|
Param| Type |Level1|Level2| Name     | Units   | Description
              |Discp|Catgy|Param|Level|

There is this difference, which isn't included in previous version of wrf:

GFS_new:

     | 112  |   0  |  10  | ST000010 | K       | T 0-10 cm below ground
layer (Upper)    |  2  |  0  |  2  | 106 |
     | 112  |  10  |  40  | ST010040 | K       | T 10-40 cm below ground
layer (Upper)   |  2  |  0  |  2  | 106 |
     | 112  |  40  | 100  | ST040100 | K       | T 40-100 cm below ground
layer (Upper)  |  2  |  0  |  2  | 106 |
     | 112  | 100  | 200  | ST100200 | K       | T 100-200 cm below ground
layer (Bottom)|  2  |  0  |  2  | 106 |

GFS 3.7:

  85 | 112  |   0  |  10  | ST000010 | K       | T 0-10 cm below ground
layer (Upper)    |  2  |  0  |  2  | 106 |
  85 | 112  |  10  |  40  | ST010040 | K       | T 10-40 cm below ground
layer (Upper)   |  2  |  0  |  2  | 106 |
  85 | 112  |  40  | 100  | ST040100 | K       | T 40-100 cm below ground
layer (Upper)  |  2  |  0  |  2  | 106 |
  85 | 112  | 100  | 200  | ST100200 | K       | T 100-200 cm below ground
layer (Bottom)|  2  |  0  |  2  | 106 |



Then, in GFS 3.7 adds:

  33 |   6  |   0  |      | UMAXW    | m s-1   | U                 at max
wind           |  0  |  2  |  2  |   6 |
  34 |   6  |   0  |      | VMAXW    | m s-1   | V                 at max
wind           |  0  |  2  |  3  |   6 |
   2 |   6  |   0  |      | PMAXW    | Pa      | Pressure of max wind level
             |  0  |  3  |  0  |   6 |
   2 |   6  |   0  |      | TMAXW    | K       | Temperature at max wind
level           |  0  |  0  |  0  |   6 |
   7 |   6  |   0  |      | HGTMAXW  | m       | Height of max wind level
             |  0  |  3  |  5  |   6 |
  33 |   7  |   0  |      | UTROP    | m s-1   | U                 at
tropopause         |  0  |  2  |  2  |   7 |
  34 |   7  |   0  |      | VTROP    | m s-1   | V                 at
tropopause         |  0  |  2  |  3  |   7 |
   2 |   7  |   0  |      | PTROP    | Pa      | Pressure of tropopause
             |  0  |  3  |  0  |   7 |
   2 |   7  |   0  |      | TTROP    | K       | Temperature at tropopause
              |  0  |  0  |  0  |   7 |
   7 |   7  |   0  |      | HGTTROP  | m       | Height of tropopause
             |  0  |  3  |  5  |   7 |


So I don't know if this makes any difference using it for files after or
before january 14, 2015, if I can use it for data of any year or if I can
use this Vtable with a previous version of wrf but for data from 2015.




2015-08-12 19:51 GMT-03:00 Rodrigo Delgado Urzúa <rdelgado at dim.uchile.cl>:

> Hi Carlos
>
> Which parameters are being added to the 3.7 version of the Vtable?
>
> Kind regards,
> Rodrigo
>
> El 12-08-15 a las 13:01, Carlos Ross escribió:
>
> Hello,
> I'm going to model the first semester of 2015, and I don't know if the
> Vtable.GFS included in WRF 3.7 has the corrections from the changes from
> january 14, 2015 in the GFS files.
> I compared the wrf 3.7 Vtable with the "GFS_new" (
> http://www2.mmm.ucar.edu/wrf/src/Vtable.GFS_new) and the wrf 3.7 version
> has more parameters... So I wouldn't know which one to use.
> I'm using the FNL Analysis (ds083.2) to model.
>
> Thanks.
>
>
>
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