Hello.
I am trying to run a model using GEFS as input data for WRF.
GEFS has gec00 (control forecast), gep01 ~ gep20 (ensemble member forecast), geavg (ensemble average) data, and I want to use geavg, which has an ensemble average.
Based on the post below, if I ungrib the gep01 data to Vtable.GFSENS, the intermediate file is created properly.
forum.mmm.ucar.edu
However, it seems that Vtable.GFSENS required for ungrib with the same namelist.wps can only be used for gep01 to gep20 files.
When comparing gep01 and geavg with wgrib2, they do not seem to be very different, but geavg generates an error during the ungrib process.
I want to perform WRF by taking advantage of the ensemble model, but instead of using gep01 ~gep20 as input data for each ensemble model of WRF.
I want to find a way to use the already provided geavg file as input data for WRF.
Thanks.
I am trying to run a model using GEFS as input data for WRF.
GEFS has gec00 (control forecast), gep01 ~ gep20 (ensemble member forecast), geavg (ensemble average) data, and I want to use geavg, which has an ensemble average.
Based on the post below, if I ungrib the gep01 data to Vtable.GFSENS, the intermediate file is created properly.

Resolved issues with GEFS ICs causing WRF to crash in first model time step
For the last few days I've been struggling trying to figure out why my WRF (v4.4.2) runs consistently crashed in the first d01 model time step with extremely vague segmentation faults, when initialized with GEFS 0.5° data (both the pgrb2a.0p50 and pgrb2b.0p50 files) from a date in 2022. I...

However, it seems that Vtable.GFSENS required for ungrib with the same namelist.wps can only be used for gep01 to gep20 files.
When comparing gep01 and geavg with wgrib2, they do not seem to be very different, but geavg generates an error during the ungrib process.
I want to perform WRF by taking advantage of the ensemble model, but instead of using gep01 ~gep20 as input data for each ensemble model of WRF.
I want to find a way to use the already provided geavg file as input data for WRF.
Thanks.
** namelist.wps
&share
wrf_core = 'ARW',
max_dom = 2,
start_date = '2024-10-28_00:00:00','2024-10-28_00:00:00',
end_date = '2024-10-30_06:00:00','2024-10-30_06:00:00',
interval_seconds = 21600
/
&ungrib
out_format = 'WPS',
prefix = 'GEFS_a',
/
&metgrid
fg_name = 'GFS'
/
** Result of "wgrib2 geavg.t00z.pgrb2a.0p50.f000"
1:0:d=2024102800:HGT:10 mb:anl:ens mean
2:224307:d=2024102800:TMP:10 mb:anl:ens mean
3:352796:d=2024102800:RH:10 mb:anl:ens mean
4:420197:d=2024102800:UGRD:10 mb:anl:ens mean
5:574210:d=2024102800:VGRD:10 mb:anl:ens mean
6:714719:d=2024102800:HGT:50 mb:anl:ens mean
7:953981:d=2024102800:TMP:50 mb:anl:ens mean
8:1084631:d=2024102800:RH:50 mb:anl:ens mean
9:1179900:d=2024102800:UGRD:50 mb:anl:ens mean
10:1337149:d=2024102800:VGRD:50 mb:anl:ens mean
11:1487209:d=2024102800:HGT:100 mb:anl:ens mean
12:1722415:d=2024102800:TMP:100 mb:anl:ens mean
13:1848285:d=2024102800:RH:100 mb:anl:ens mean
14:2012539:d=2024102800:UGRD:100 mb:anl:ens mean
15:2277037:d=2024102800:VGRD:100 mb:anl:ens mean
16:2539701:d=2024102800:HGT:200 mb:anl:ens mean
17:2769360:d=2024102800:TMP:200 mb:anl:ens mean
18:2894795:d=2024102800:RH:200 mb:anl:ens mean
19:3118746:d=2024102800:UGRD:200 mb:anl:ens mean
20:3290237:d=2024102800:VGRD:200 mb:anl:ens mean
21:3459511:d=2024102800:HGT:250 mb:anl:ens mean
22:3685648:d=2024102800:TMP:250 mb:anl:ens mean
23:3805782:d=2024102800:RH:250 mb:anl:ens mean
24:4048089:d=2024102800:UGRD:250 mb:anl:ens mean
25:4217865:d=2024102800:VGRD:250 mb:anl:ens mean
26:4391255:d=2024102800:HGT:300 mb:anl:ens mean
27:4614197:d=2024102800:UGRD:300 mb:anl:ens mean
28:4788297:d=2024102800:VGRD:300 mb:anl:ens mean
29:4968212:d=2024102800:UGRD:400 mb:anl:ens mean
30:5137263:d=2024102800:VGRD:400 mb:anl:ens mean
31:5312496:d=2024102800:HGT:500 mb:anl:ens mean
32:5559751:d=2024102800:TMP:500 mb:anl:ens mean
33:5677987:d=2024102800:RH:500 mb:anl:ens mean
34:5925092:d=2024102800:UGRD:500 mb:anl:ens mean
35:6193706:d=2024102800:VGRD:500 mb:anl:ens mean
36:6463951:d=2024102800:HGT:700 mb:anl:ens mean
37:6722359:d=2024102800:TMP:700 mb:anl:ens mean
38:6847359:d=2024102800:RH:700 mb:anl:ens mean
39:7092637:d=2024102800:UGRD:700 mb:anl:ens mean
40:7355103:d=2024102800:VGRD:700 mb:anl:ens mean
41:7618102:d=2024102800:HGT:850 mb:anl:ens mean
42:7884151:d=2024102800:TMP:850 mb:anl:ens mean
43:8022995:d=2024102800:RH:850 mb:anl:ens mean
44:8273247:d=2024102800:VVEL:850 mb:anl:ens mean
45:8591538:d=2024102800:UGRD:850 mb:anl:ens mean
46:8858600:d=2024102800:VGRD:850 mb:anl:ens mean
47:9127940:d=2024102800:HGT:925 mb:anl:ens mean
48:9404224:d=2024102800:TMP:925 mb:anl:ens mean
49:9542975:d=2024102800:RH:925 mb:anl:ens mean
50:9784662:d=2024102800:UGRD:925 mb:anl:ens mean
51:10051289:d=2024102800:VGRD:925 mb:anl:ens mean
52:10319572:d=2024102800:TMP:1000 mb:anl:ens mean
53:10460607:d=2024102800:RH:1000 mb:anl:ens mean
54:10689111:d=2024102800:UGRD:1000 mb:anl:ens mean
55:10959857:d=2024102800:VGRD:1000 mb:anl:ens mean
56:11225247:d=2024102800:HGT:1000 mb:anl:ens mean
57:11513384:d=2024102800RES:surface:anl:ens mean
58:11767536:d=2024102800:HGT:surface:anl:ens mean
59:11920049:d=2024102800:TSOIL:0-0.1 m below ground:anl:ens mean
60:12060421:d=2024102800:SOILW:0-0.1 m below ground:anl:ens mean
61:12159456:d=2024102800:WEASD:surface:anl:ens mean
62:12240262:d=2024102800:SNOD:surface:anl:ens mean
63:12316144:d=2024102800:ICETK:surface:anl:ens mean
64:12344817:d=2024102800:TMP:2 m above ground:anl:ens mean
65:12594270:d=2024102800:RH:2 m above ground:anl:ens mean
66:12820695:d=2024102800:UGRD:10 m above ground:anl:ens mean
67:13089887:d=2024102800:VGRD:10 m above ground:anl:ens mean
68:13351619:d=2024102800WAT:entire atmosphere (considered as a single layer):anl:ens mean
69:13515136:d=2024102800:CAPE:180-0 mb above ground:anl:ens mean
70:13669177:d=2024102800:CIN:180-0 mb above ground:anl:ens mean
71:13771714:d=2024102800RMSL:mean sea level:anl:ens mea
** Result of "wgrib2 gep01.t00z.pgrb2b.0p50.f000"
1:0:d=2024102800RES:mean sea level:anl:ENS=+1
2:284286:d=2024102800RES:1 hybrid level:anl:ENS=+1
3:552569:d=2024102800:HGT:1 hybrid level:anl:ENS=+1
4:728284:d=2024102800:TMP:1 hybrid level:anl:ENS=+1
5:974100:d=2024102800:RH:1 hybrid level:anl:ENS=+1
6:1308234:d=2024102800:UGRD:1 hybrid level:anl:ENS=+1
7:1574110:d=2024102800:VGRD:1 hybrid level:anl:ENS=+1
8:1835567:d=2024102800RES:2 hybrid level:anl:ENS=+1
9:2099855:d=2024102800:HGT:2 hybrid level:anl:ENS=+1
10:2272642:d=2024102800:TMP:2 hybrid level:anl:ENS=+1
11:2516855:d=2024102800:RH:2 hybrid level:anl:ENS=+1
12:2850344:d=2024102800:UGRD:2 hybrid level:anl:ENS=+1
13:3119102:d=2024102800:VGRD:2 hybrid level:anl:ENS=+1
14:3384274:d=2024102800RES:3 hybrid level:anl:ENS=+1
15:3646377:d=2024102800:HGT:3 hybrid level:anl:ENS=+1
16:3816804:d=2024102800:TMP:3 hybrid level:anl:ENS=+1
17:4059444:d=2024102800:RH:3 hybrid level:anl:ENS=+1
18:4392741:d=2024102800:UGRD:3 hybrid level:anl:ENS=+1
19:4662128:d=2024102800:VGRD:3 hybrid level:anl:ENS=+1
20:4928886:d=2024102800RES:4 hybrid level:anl:ENS=+1
21:5222330:d=2024102800:HGT:4 hybrid level:anl:ENS=+1
22:5392480:d=2024102800:TMP:4 hybrid level:anl:ENS=+1
23:5632723:d=2024102800:RH:4 hybrid level:anl:ENS=+1
24:5968203:d=2024102800:UGRD:4 hybrid level:anl:ENS=+1
25:6238086:d=2024102800:VGRD:4 hybrid level:anl:ENS=+1
26:6505495:d=2024102800:VIS:surface:anl:ENS=+1
27:6628722:d=2024102800:UGRDlanetary boundary layer:anl:ENS=+1
28:6800897:d=2024102800:VGRDlanetary boundary layer:anl:ENS=+1
29:6971658:d=2024102800:VRATElanetary boundary layer:anl:ENS=+1
30:7140840:d=2024102800:GUST:surface:anl:ENS=+1
31:7318314:d=2024102800:HGT:1 mb:anl:ENS=+1
32:7557345:d=2024102800:TMP:1 mb:anl:ENS=+1
33:7666872:d=2024102800:SPFH:1 mb:anl:ENS=+1
34:7885847:d=2024102800:VVEL:1 mb:anl:ENS=+1
35:8245695:d=2024102800:UGRD:1 mb:anl:ENS=+1
36:8472805:d=2024102800:VGRD:1 mb:anl:ENS=+1
37:8666513:d=2024102800:O3MR:1 mb:anl:ENS=+1
38:8952070:d=2024102800:HGT:2 mb:anl:ENS=+1
39:9180187:d=2024102800:TMP:2 mb:anl:ENS=+1
40:9294802:d=2024102800:SPFH:2 mb:anl:ENS=+1
** Result of ./ungrib.exe of geavg.t00z.pgrb2a.0p50.f000
*** Starting program ungrib.exe ***
Start_date = 2024-10-28_00:00:00 , End_date = 2024-10-30_06:00:00
output format is WPS
Path to intermediate files is ./
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Inventory for date = 2024-10-28 00:00:00
PRES TT UU VV RH HGT PSFC PMSL SM000010 SM010040 SM040100 SM100200 SM010200 ST000010 ST010040 ST040100 ST100200 ST010200 SEAICE LANDSEA SOILHGT SKINTEMP SNOW
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Inventory for date = 2024-10-28 03:00:00
PRES TT UU VV RH HGT PSFC PMSL SM000010 SM010040 SM040100 SM100200 SM010200 ST000010 ST010040 ST040100 ST100200 ST010200 SEAICE LANDSEA SOILHGT SKINTEMP SNOW
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Inventory for date = 2024-10-28 06:00:00
PRES TT UU VV RH HGT PSFC PMSL SM000010 SM010040 SM040100 SM100200 SM010200 ST000010 ST010040 ST040100 ST100200 ST010200 SEAICE LANDSEA SOILHGT SKINTEMP SNOW
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Inventory for date = 2024-10-28 09:00:00
PRES TT UU VV RH HGT PSFC PMSL SM000010 SM010040 SM040100 SM100200 SM010200 ST000010 ST010040 ST040100 ST100200 ST010200 SEAICE LANDSEA SOILHGT SKINTEMP SNOW
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Inventory for date = 2024-10-28 12:00:00
PRES TT UU VV RH HGT PSFC PMSL SM000010 SM010040 SM040100 SM100200 SM010200 ST000010 ST010040 ST040100 ST100200 ST010200 SEAICE LANDSEA SOILHGT SKINTEMP SNOW
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