Search found 307 matches

by glenn.rolph
March 21st, 2018, 6:36 am
Forum: HYSPLIT for PCs
Topic: HYSPLIT running period
Replies: 1
Views: 7

Re: HYSPLIT running period

You did not provide your CONTROL file but there is a limit of 12 meteorological filenames allowed in the CONTROL file, so you will have to concatenate your meteorological files. Search for concatenate in the forum and you will find similar questions/answers such as:
by glenn.rolph
March 6th, 2018, 9:50 am
Forum: Announce
Topic: 2018 HYSPLIT Europe Workshop
Replies: 0
Views: 56

2018 HYSPLIT Europe Workshop

A 3-day PC/Mac HYSPLIT workshop will be given May 15-17, 2018, in Barcelona, Spain (a workshop is also planned for College Park, MD on June 12-15, 2018). The Barcelona workshop will be focused on the use of the most recent version of the model on the PC/Mac and its applications. This workshop is a s...
by glenn.rolph
February 27th, 2018, 9:59 am
Forum: Radiological
Topic: The difference between two type of spacing in concentration modeling
Replies: 2
Views: 193

Re: The difference between two type of spacing in concentration modeling

Because the calculation of concentration is mass/volume and since your grid cell is larger in the first one, hence a larger volume, and therefore the concentration will be less assuming the mass is approximately the same in the grid box. Similarly for deposition, the calculation is mass/area and sin...
by glenn.rolph
February 16th, 2018, 11:38 am
Forum: Conversion programs
Topic: User-Entered Meteorological Data with no GUI
Replies: 3
Views: 293

Re: User-Entered Meteorological Data with no GUI

The programs that do this are included in the PC distribution and are called: Surface data to ARL format: stn2arl.exe Usage: stn2arl [filein] [fileout] [clat] [clon] [optional process ID number] Creates multiple time periods ARL packed from surface obs 07 09 04 11 00 270 5.0 1500.0 4 07 09 04 12 00 ...
by glenn.rolph
February 15th, 2018, 3:14 pm
Forum: Dispersion Model
Topic: Wind Profile
Replies: 2
Views: 226

Re: Wind Profile

All the meteorological wind directions are defined as true north being zero degrees (u and v components are relative to the grid). You are right that the profile program does not interpolate the data to the actual location you specify, but rather finds the nearest horizontal grid point of the data t...
by glenn.rolph
February 15th, 2018, 2:57 pm
Topic: Error while using 4 meteorological files for trajectory calculation
Replies: 2
Views: 300

Re: Error while using 4 meteorological files for trajectory calculation

The data set looks to be corrupted. What meteorological data are you using? Try downloading the files again, making sure that you download them as "binary", and try again.
by glenn.rolph
February 8th, 2018, 9:43 am
Forum: Trajectory Model
Replies: 2
Views: 157


Trajectory output cannot be displayed as about MSL (you can enter above MSL for the starting height assuming you tell the model that you are using above MSL in the SETUP.CFG). You specify the AGL in the GUI (attached) or as the -v1 option of trajplot.
by glenn.rolph
January 18th, 2018, 11:48 am
Forum: Developers
Topic: [PATCH] conc2cdf Improvements
Replies: 3
Views: 427

Re: [PATCH] conc2cdf Improvements

Thank you very much for the extensive review and modifications to the con2cdf.f program. We will consider adding it to the repository. Could you forward a copy of the final modified code to Thanks.
by glenn.rolph
December 27th, 2017, 9:04 am
Forum: Radiological
Topic: dose factors
Replies: 2
Views: 413

Re: dose factors

You can find dose conversion factors from the U.S. EPA at: ... protection

Look at the FGR 11 and 12