Search found 415 matches

by barbara.stunder
June 22nd, 2020, 2:17 pm
Forum: 5. Trajectory options
Topic: Dispersion models - vertical motion methods
Replies: 4
Views: 167

Re: Dispersion models - vertical motion methods

Generally using the model vertical velocity should be used. Why are you not interested in what is above 100 m for dispersion>
by barbara.stunder
June 22nd, 2020, 9:29 am
Forum: 1. Installing HYSPLIT
Topic: Where is the file explorer option?
Replies: 2
Views: 102

Re: Where is the file explorer option?

And then:
Apply
OK
by barbara.stunder
June 22nd, 2020, 9:27 am
Forum: 1. Installing HYSPLIT
Topic: Where is the file explorer option?
Replies: 2
Views: 102

Re: Where is the file explorer option?

Windows -
Control Panel
Appearance and Personalization
File Explorer Options
View
Hide extensions for known file types - uncheck this
by barbara.stunder
June 22nd, 2020, 8:15 am
Forum: 1. Installing HYSPLIT
Topic: ImageMagick version - up to 7.0.7 required yet not posted
Replies: 3
Views: 140

Re: ImageMagick version - up to 7.0.7 required yet not posted

Go ahead and get the ImageMagick-7.0.10. That will probably be what I have on my PC, which was installed fairly recently. The directory mine is in is:
C:/Program Files/ImageMagick-7.0.10-Q16
by barbara.stunder
June 15th, 2020, 7:56 am
Forum: General questions on meteorological data needed for HYSPLIT
Topic: Atmospheric sounding
Replies: 2
Views: 134

Re: Atmospheric sounding

We have not archived the gdas1 meteorology for January 2004. Please use the Reanalysis instead.
by barbara.stunder
June 15th, 2020, 7:47 am
Forum: HYSPLIT for PCs
Topic: Meteorological data extraction
Replies: 1
Views: 106

Re: Meteorological data extraction

I may not be understanding your question correctly. Yes, the met data can have a different temporal resolution than the concentration output interval. Search for 'metinp' in the MESSAGE file. That gives the date/time of the meteorology it is reading. For information on the MESSAGE file, see https://...
by barbara.stunder
May 26th, 2020, 8:52 am
Forum: Users
Topic: Meteorological Data
Replies: 1
Views: 360

Re: Meteorological Data

It depends in part on what scale you are interested in. Smaller scale models generally resolve smaller meteorological features, though no model is perfect. Some of our archives have different spatial and temporal resolutions. See https://www.ready.noaa.gov/archives.php. You could try these archives ...
by barbara.stunder
May 20th, 2020, 11:58 am
Forum: Trajectory Model
Topic: Ensemble Model
Replies: 3
Views: 348

Re: Ensemble Model

This is a feature.  HYSPLIT's default is heights AGL.  As stated https://ready.arl.noaa.gov/hysplitusersguide/S611.htm in the section "Height Unit for Input", "Setting this parameter to "1" [for above mean sea level] forces the model to subtract the local terrain height from source input heights bef...
by barbara.stunder
May 18th, 2020, 9:11 am
Forum: Trajectory Model
Topic: GFS 0p25 File Error
Replies: 1
Views: 169

Re: GFS 0p25 File Error

Thank you for bringing this to our attention. Yes, there is a problem with that file. I deleted it from the archive and noted that in the file readme_gfs0p25_missings.txt (ftp://ftp.arl.noaa.gov/archives/gfs0p25.v1). Unfortunately we cannot fix the file, so as an alternative, use /archives/gdas0p5/2...