Search found 34 matches

by j1d1w1
Mon Jan 08, 2018 3:06 am
Forum: UEMS v15.x support
Topic: Innermost (horizontal) gridlength 22 m: divide by zero
Replies: 3
Views: 722

Re: Innermost (horizontal) gridlength 22 m: divide by zero

Thanks -- I'll play with that. I had set TIME_STEP = AUTO_S and UEMS had chosen "a large timestep of 0.5 seconds". Maybe I'll prescribe an even smaller value. John
by j1d1w1
Fri Jan 05, 2018 7:03 pm
Forum: UEMS v15.x support
Topic: Innermost (horizontal) gridlength 22 m: divide by zero
Replies: 3
Views: 722

Innermost (horizontal) gridlength 22 m: divide by zero

I'm hoping to use UEMS to diagnose the near-ground wind field over a domain of about a square kilometer with a horizontal resolution of the order of 20 m; this innermost domain (no. 3) is nested within a domain 2 that (in turn, in the usual way) is nested within domain 1, where the outermost domain ...
by j1d1w1
Sun Jul 31, 2016 11:13 pm
Forum: UEMS v15.x support
Topic: Using JRA55 reanalysis as dset
Replies: 0
Views: 1402

Using JRA55 reanalysis as dset

I'm interested to use the JRA55 reanalysis to provide initialize and boundary conditions for a case study, but unsure what steps are necessary to get the JRA55 data into the needed format for UEMS to use. Is it simply a matter of renaming the JRA55 files one can download from NCAR/UCAR Research Data...
by j1d1w1
Tue Mar 17, 2015 12:16 am
Forum: EMS v3.4 support
Topic: dset nnrp incomplete?
Replies: 2
Views: 1218

Re: dset nnrp incomplete?

Thanks... do you know how I need to source the nnrp3d files?
by j1d1w1
Mon Mar 16, 2015 6:35 pm
Forum: EMS v3.4 support
Topic: dset nnrp incomplete?
Replies: 2
Views: 1218

dset nnrp incomplete?

Hi, I'm interested to run WRFEMS (in a downscaling mode, driven by NCEP1 initial and boundary conditions) for a period of a few days in 1975, focusing on a small domain around New Zealand. At the ems-prep stage ems_prep --dset nnrp --analysis --date 19750801 --cycle 00 --domains 1,2,3,4 --length 24 ...
by j1d1w1
Wed May 28, 2014 5:46 pm
Forum: EMS v3.4 support
Topic: dwiz lockup, cant localize (64bit)
Replies: 2
Views: 1450

Re: dwiz lockup, cant localize (64bit)

Are there any known problems with WRFEMS under openSUSE 13.1? I have just installed the latest version under openSUSE 13.1 (having had no problems with various earlier versions under various releases of openSUSE). Although .cshrc does contain the mandated line, dwiz would not run until I manually is...
by j1d1w1
Tue Nov 05, 2013 10:20 pm
Forum: General NWP, Postprocessing, Meteorology
Topic: basis vectors for ugrdhy#, vgrdhy#
Replies: 1
Views: 1205

Re: basis vectors for ugrdhy#, vgrdhy#

Oops, I should have written, "Thus maybe (B) is the proper interpretation"... J
by j1d1w1
Tue Nov 05, 2013 2:43 pm
Forum: EMS v3.4 support
Topic: Puzzling response to ems_post
Replies: 2
Views: 1507

Re: Puzzling response to ems_post

Thanks for the suggestion. Permissions are not the issue. For some reason, I have to add the options as follows (for example):

ems_post --domain 3 --grib --grib2

I've had this experience more than once.
by j1d1w1
Thu Oct 31, 2013 7:36 pm
Forum: General NWP, Postprocessing, Meteorology
Topic: basis vectors for ugrdhy#, vgrdhy#
Replies: 1
Views: 1205

basis vectors for ugrdhy#, vgrdhy#

I am interested in the WRF solution rather close to sloping terrain (LEVELS=1.000, 0.998, 0.996, 0.994...), and I am unsure how to interpret the velocity components ugrdhy#, vgrdhy# (where # specifies the hybrid level, e.g. ugrdhy1 is "1 hybrid level U-Component Of Wind [m/s]"). The two possible int...
by j1d1w1
Wed Oct 02, 2013 5:40 pm
Forum: EMS v3.4 support
Topic: Puzzling response to ems_post
Replies: 2
Views: 1507

Puzzling response to ems_post

I've just installed wrfems (3.4.1.13.40) on a new machine. I re-created a domain I'd used on the old machine, and after setting the configuration files I did a quick run. However when I issue ems_post --domain 1 the response is No simulation file processing requested - Who knew? Any suggestion as to...