Search found 77 matches

by alfe
Sat Sep 16, 2017 2:46 pm
Forum: EMS Hacking
Topic: WRF compile options
Replies: 1
Views: 176

WRF compile options

Hello, If I want to compile WRF ARW from source code, what would be the closest option compared to the EMS binaries, knowing I have a XEON architecture : 1. (serial) 2. (smpar) 3. (dmpar) 4. (dm+sm) NEC SX (sxf90/sxcc) 5. (serial) 6. (smpar) 7. (dmpar) 8. (dm+sm) GNU (gfortran/gcc) 9. (serial) 10. (...
by alfe
Wed Jul 26, 2017 4:44 pm
Forum: UEMS v15.x support
Topic: nomad tiles larger than ptiles from ems system ?
Replies: 2
Views: 172

nomad tiles larger than ptiles from ems system ?

Hello, As stated in the title, despite the grib filter I have set on the grib files from Nomad server, Nomad files are still larger than uems ptiles files. uems gives 6 MB and equivalent Nomad gives 12 MB. I have no idea why ? I think that I have selected only necessary fields but... This is before ...
by alfe
Tue Jul 25, 2017 1:17 pm
Forum: General NWP, Postprocessing, Meteorology
Topic: How to improve convection triggering?
Replies: 6
Views: 290

Re: How to improve convection triggering?

Hello,
As far as I know from my trials, at least 60 levels are required and Kain Fritsch multiscale (CU = 11). Better but not perfect.
by alfe
Wed Feb 22, 2017 8:25 pm
Forum: UEMS v15.x support
Topic: geogrid not found
Replies: 7
Views: 501

Re: geogrid not found

Hello Meteoadriatic,
your wish came true : http://www.dtcenter.org/nems-nmmb/users/

another one bites the dust...
by alfe
Wed Nov 02, 2016 9:14 pm
Forum: EMS Hacking
Topic: Madis with WRF UEMS 3 DVAR
Replies: 1
Views: 533

Re: Madis with WRF UEMS 3 DVAR

Hi meteol,
I don't know if anybody here knows how to let the uems system ingest observational data... I even don't know if it is possible.
by alfe
Sat Oct 15, 2016 1:46 pm
Forum: EMS Hacking
Topic: VTable.gfs and soil/temp 3D fields
Replies: 0
Views: 911

VTable.gfs and soil/temp 3D fields

Hello,
I was wondering how the gfs soil 3D fields are extracted from the Vtable values, because the soil levels specified in the Vtable are different from the soil levels seen in the GFS data file ??

Any idea ?
by alfe
Sat Oct 08, 2016 12:58 pm
Forum: EMS Hacking
Topic: Using GFS 0.25° grid dataset
Replies: 54
Views: 31377

Re: Using GFS 0.25° grid dataset

Has anyone tried to use that script given earlier in this topics : curl "http://nomads.ncep.noaa.gov/cgi-bin/filter_gfs_0p25.pl?file=gfs.t"$CYCLE"z.pgrb2.0p25.f0"$TIME"&all_lev=on&all_var=on&subregion=&leftlon=-10.00&rightlon=30.50&toplat=57.50&bottomlat=33.00&dir=%2Fgfs."$(date +"%Y")""$DATE_MONTH"...
by alfe
Tue Sep 06, 2016 7:16 pm
Forum: UEMS v15.x support
Topic: UEMS wind parametrization
Replies: 27
Views: 1898

Re: UEMS wind parametrization

BTW - alfe - do You use restarts in yours simulations?
No, I don't. It's like a rocket, once it starts I just let it go
by alfe
Fri Sep 02, 2016 5:43 pm
Forum: UEMS v15.x support
Topic: UEMS wind parametrization
Replies: 27
Views: 1898

Re: UEMS wind parametrization

I don't know much about parallel runs. For your calibration, it depends on the needed accuracy. I think that 1 year is not bad because you will see the seasonal effects. WRF gives some over estimations for 10m above ground wind speed. Maybe topowind=1 is a good idea for the finest domain. By the way...
by alfe
Wed Aug 31, 2016 2:54 pm
Forum: UEMS v15.x support
Topic: UEMS wind parametrization
Replies: 27
Views: 1898

Re: UEMS wind parametrization

Hi skosecki ,
What an interested topic !
As a first approach, you might be interested in reading this topic viewtopic.php?f=9&t=1061
What is the mesh size of CFSRV1 and CFSRV2 ?