Search found 95 matches

by norulz
Mon Jul 31, 2017 7:34 am
Forum: UEMS v15.x support
Topic: nomad tiles larger than ptiles from ems system ?
Replies: 2
Views: 2998

Re: nomad tiles larger than ptiles from ems system ?

I concur that the nomads tiles are double the size of the uems ptiles. I am using smaller domains so I don't really mind the slightly longer download time. I noticed your request for the Nomads data and the var LANDN is missing. You will need this to get correct masking after the GFS upgrade. Otherw...
by norulz
Tue Jul 25, 2017 3:06 pm
Forum: General NWP, Postprocessing, Meteorology
Topic: How to improve convection triggering?
Replies: 12
Views: 9444

Re: How to improve convection triggering?

I'm not as intimate as you are with the internals of the schemes and the interactions between them but I will be playing around with them and will let you know if I think anything might be interesting.
by norulz
Tue Jul 25, 2017 1:01 pm
Forum: General NWP, Postprocessing, Meteorology
Topic: How to improve convection triggering?
Replies: 12
Views: 9444

Re: How to improve convection triggering?

Unfortunately no ideas... I share your feeling for the problem. Last night I, once more, read many of the existing studies into use of the various convection schemes for WRF but found no clear guidance on how to improve convection triggering. In the East Med the problem with convection triggering is...
by norulz
Mon Jul 24, 2017 7:33 am
Forum: UEMS v15.x support
Topic: Changes needed for GFS Update 2017?
Replies: 76
Views: 54658

Re: Changes needed for GFS Update 2017?

I am experiencing the same, but I am currently still on 15.99.2. My runs fail, and I do not get any diagnostic messages. Is this problem solved in 15.99.5? All my domain runs failed on the first try but started up OK on the second and subsequent runs without changing anything. I suggest to try again.
by norulz
Sat Jul 22, 2017 8:28 am
Forum: UEMS v15.x support
Topic: Changes needed for GFS Update 2017?
Replies: 76
Views: 54658

Re: Changes needed for GFS Update 2017?

There is a new update on uems server: 15.99.5 http://ems3.comet.ucar.edu/uems/releases/ Has anyone tested it? I have tried it and it finally appears to be working OK. I performed both updates (15.99.2 & 15.99.5) at the same time using the install utility dated 18 July 2017. There were problems with...
by norulz
Wed Jun 28, 2017 9:25 am
Forum: UEMS v15.x support
Topic: Sea model
Replies: 1
Views: 1803

Re: Sea model

Hi, FYI the marine data in openSkiron.org is taken from external sources running the WAM model for waves and the NEMO model (and others) for sea currents. This marine data is merged with the UEMS atmospheric forecast data in the distributed Grib files. These are primarily targeted to the sailing com...
by norulz
Sun Mar 26, 2017 12:07 pm
Forum: UEMS v15.x support
Topic: MICROPHYSICS: Lin et-al vs Ferrier
Replies: 4
Views: 3357

Re: MICROPHYSICS: Lin et-al vs Ferrier

Thanks for the suggestion. WSM5 is quite fast. Not as much as Ferrier but faster than Lin.
I will see if I get better precipitation forecasts next winter.
by norulz
Sun Mar 26, 2017 10:19 am
Forum: UEMS v15.x support
Topic: MICROPHYSICS: Lin et-al vs Ferrier
Replies: 4
Views: 3357

MICROPHYSICS: Lin et-al vs Ferrier

Hello all,

I tried the Ferrier Micro Physics scheme (MP_PHYSICS = 5) and found it to be about 10% faster than the default scheme, Lin et-al (MP_PHYSICS = 2).

What differences might I expect in the resulting forecast using Ferrier scheme with a single nested model at 12km/4km grids?

Thanks,
David
by norulz
Wed Mar 08, 2017 1:11 pm
Forum: UEMS v15.x support
Topic: gribinfo.conf for NOMADS Grib Filter
Replies: 6
Views: 4118

Re: gribinfo.conf for NOMADS Grib Filter

Ivan thanks a million!
It's working well.
David
by norulz
Wed Mar 08, 2017 12:44 pm
Forum: UEMS v15.x support
Topic: gribinfo.conf for NOMADS Grib Filter
Replies: 6
Views: 4118

Re: gribinfo.conf for NOMADS Grib Filter

....mmmmmm

I'm giving it a try

Thanks