Search found 334 matches

by barbara.stunder
November 4th, 2019, 3:23 pm
Forum: Users
Topic: How to set up HYSPLIT Modeling on PC for calculationg concentration of volcanic ash.
Replies: 1
Views: 150

Re: How to set up HYSPLIT Modeling on PC for calculationg concentration of volcanic ash.

We don't know exactly what is in the ash, so approximations are made. In that GUI section, first do a run choosing Particle, and no wet, no dry deposition. Save the CONTROL file for reference. Then add dry deposition, which will give a value for the deposition velocity. Then add wet deposition.
by barbara.stunder
November 4th, 2019, 3:00 pm
Forum: Trajectory Model
Topic: trajectory frequency plotting contours
Replies: 6
Views: 2833

Re: trajectory frequency plotting contours

The map domain is defaulting to the whole plume, even though you are forcing the higher contour values. Have you tried the Google Earth option? concplot ... -a3 If you want concplot, run concplot.exe in the command prompt, and it will show all the options. Try the -h and -g options forcing 0 circles...
by barbara.stunder
October 28th, 2019, 9:42 am
Forum: Dispersion Model
Topic: grids
Replies: 1
Views: 278

Re: grids

Please send your CONTROL and SETUP files for these runs, and the command line for the program that outputs your values shown.
by barbara.stunder
October 28th, 2019, 8:04 am
Forum: Trajectory Model
Topic: trajectory frequency plotting contours
Replies: 6
Views: 2833

Re: trajectory frequency plotting contours

Because it is working in the Execute Display in the GUI, you need to make sure all those options are set in the command line equivalent. Looking at the "Create a Trajectory Frequency Plot" GUI window (Trajectory - Display - Frequency), you need to click "Polar" and set the zoom. Those are the only o...
by barbara.stunder
October 15th, 2019, 12:38 pm
Forum: Bugs
Topic: Possible issue with NAM SPHU at model levels
Replies: 1
Views: 307

Re: Possible issue with NAM SPHU at model levels

We are working on an operational fix, then will need to fix the archived files. This applies to all the "nams" files.
by barbara.stunder
October 8th, 2019, 7:26 am
Forum: Dispersion Model
Topic: Pollutant starting location(large area) matter
Replies: 1
Views: 201

Re: Pollutant starting location(large area) matter

See the help file c:\hysplit4\html\S417.htm. Or through GUI, Advanced - File Edit - Emissions File.

See also the Dust sections of the Tutorial. https://www.ready.noaa.gov/HYSPLIT_Tutorials.php
by barbara.stunder
October 8th, 2019, 7:15 am
Forum: Announce
Topic: June 2019 HYSPLIT upgrade at NCEP
Replies: 8
Views: 1378

Re: June 2019 HYSPLIT upgrade at NCEP

It does not. Further, the precipitation was revised to be 6-h accumulation for all the files in /pub/archives/gfs0p25.
by barbara.stunder
October 7th, 2019, 10:13 am
Forum: Trajectory Model
Topic: Trajectory Source Geolocation
Replies: 3
Views: 1054

Re: Trajectory Source Geolocation

You need to guess at a source location. Section 6.4 of the Tutorial, Source Geolocation, says the "forward trajectory ... encompasses the time period of the sampling." This is probably because the meteorology file(s) in the output CONTROL files will be the same as in this forward trajectory.
by barbara.stunder
September 23rd, 2019, 9:47 am
Forum: Users
Topic: GSVIEW5.0 Installation in Windows 10
Replies: 1
Views: 201

Re: GSVIEW5.0 Installation in Windows 10

Ghostscript is usually in c:\Program Files\gs, and
Ghostview in c:\Program Files\Ghostgum
by barbara.stunder
September 23rd, 2019, 9:43 am
Forum: Trajectory Model
Topic: Regarding output of gdas1 trajectory output
Replies: 2
Views: 252

Re: Regarding output of gdas1 trajectory output

For a description of the output trajectory file (tdump), see
https://www.ready.noaa.gov/hypub/trajinfo.html#FORMAT

The trajectory implies the u and v components along the trajectory. We didn't choose that variable as one of the ones to output as a diagnostic variable.