Search found 28 matches

by windyweek
Fri May 12, 2017 4:08 pm
Forum: UEMS v15.x support
Topic: topo_wind option and recommended grid size
Replies: 3
Views: 1205

Re: topo_wind option and recommended grid size

Thanks Ivan! I have read that study before but it was nice re-reading it again. However, it still does not shed light into the recommended grid size. The authors use a 2-km domain but don't discuss other grid sizes. Here's one more question: as far as I understand the topo_wind option corrects only ...
by windyweek
Fri May 12, 2017 11:43 am
Forum: UEMS v15.x support
Topic: topo_wind option and recommended grid size
Replies: 3
Views: 1205

topo_wind option and recommended grid size

Hello all, I would like to know what is the recommended grid size (if any) when using the topo_wind option. This is an excerpt from UEMS run_physics.conf: Topographic correction for surface winds to represent extra drag from sub-grid topography and enhanced flow at hill tops. Shown to reduce 10m win...
by windyweek
Wed Mar 08, 2017 12:11 pm
Forum: UEMS v15.x support
Topic: gribinfo.conf for NOMADS Grib Filter
Replies: 6
Views: 1463

Re: gribinfo.conf for NOMADS Grib Filter

Hi David, It looks like I had one more change in Ptiles.pm. Sorry I didn't notice that earlier. Just after the line: my $request = "\"$https$script?$flist&$domain&$dset\""; Put: if ($mod eq 'nomadsab') { $request = $domain; } So for the custom ptile ('nomadsab' in this case) I override the request v...
by windyweek
Tue Mar 07, 2017 4:08 pm
Forum: UEMS v15.x support
Topic: gribinfo.conf for NOMADS Grib Filter
Replies: 6
Views: 1463

Re: gribinfo.conf for NOMADS Grib Filter

It is truly possible. I actually use the NOMADS Grib filter instead of the EMS Ptile service all the time. In gribinfo.conf, the most significant part is: SERVER-HTTP = NOMADS:/cgi-bin/filter_gfs_0p25.pl?file=gfs.tCCz.pgrb2.0p25.fFFF&all_lev=on&all_var=on&subregion=&dir=%2Fgfs.YYYYMMDDCC You can eve...
by windyweek
Sun Oct 09, 2016 5:12 pm
Forum: UEMS v15.x support
Topic: Problems interpolating SST --sfc file
Replies: 2
Views: 1563

Re: Problems interpolating SST --sfc file

Hi David, I was in the same boat and was able to find a solution. The problem is a masking issue. I'll try to explain a bit down below. When we try to input SST data, LANDMASK or LANDSEA won't ever be 100% accurate masks simply because they come from different sources. LANDMASK comes from the land u...
by windyweek
Tue Jun 28, 2016 12:28 pm
Forum: UEMS v15.x support
Topic: Configuration help for domains over Europe
Replies: 6
Views: 2135

Re: Configuration help for domains over Europe

It seems to be allowed (at least for UEMS) and I think I haven't done any customization in order to allow it.
by windyweek
Tue Jun 28, 2016 12:15 pm
Forum: UEMS v15.x support
Topic: Configuration help for domains over Europe
Replies: 6
Views: 2135

Re: Configuration help for domains over Europe

I forgot to add in last post, DFI filter will not work with adaptive time step. I successfully run DFI filtering all along with adaptive time step. The only caveat is that the first 2 hours of the simulation have weird values (I get all zeros for T2, U-, V-) but in my case I easily throw them away....
by windyweek
Tue May 10, 2016 8:34 pm
Forum: General NWP, Postprocessing, Meteorology
Topic: GFS next major version - 4D-VAR and hourly output to 120h
Replies: 23
Views: 8924

Re: GFS next major version - 4D-VAR and hourly output to 120h

The upgraded GFS is coming out tomorrow (May 11, 2016) starting with the 12z run. Do you guys know if the NOMADS grib filter URLs (http://nomads.ncep.noaa.gov/cgi-bin/filter_gfs_0p25.pl) remain the same? According to the TIN there will be new grib filter for the 1h output (filter_gfs_0p25_1hr.pl). H...
by windyweek
Fri Mar 18, 2016 11:13 am
Forum: UEMS v15.x support
Topic: some fields like APCPsfc, GUST10m, TCDCclm - problem
Replies: 13
Views: 4809

Re: some fields like APCPsfc, GUST10m, TCDCclm - problem

Thanks David, nice hint.

I've never played with digital filter Initialization but seems like it is time to give it a try :)

Cheers,
Ivan
by windyweek
Wed Mar 16, 2016 1:02 pm
Forum: UEMS v15.x support
Topic: some fields like APCPsfc, GUST10m, TCDCclm - problem
Replies: 13
Views: 4809

Re: some fields like APCPsfc, GUST10m, TCDCclm - problem

Hi David,

Just stumbled upon this post... I have the same issue with GUST10m being zero at T=0. From what I saw it seems to be UEMS UPP problem.

Maybe we should report that to Bob.

Thanks,
Ivan