HYSPLIT Forum: hysplitbbs.arl.noaa.gov

The contours in concplot are smoothed, so yes, there can be differences in the details you are looking at.  Please plot using the hysplit utility program gridplot, which does not do contouring, it just plots the values on the grid.  The program gridplot is in the PC distribution.   In your figure wi...

Try to avoid roughly 07-10 UTC.

This seems like it should be working. Try this: 1. Open the file ..\graphics/CLRTBL.CFG in Notepad. See if it looks alright - 4 columns of data. 2. Repeat the run in the command prompt, but use -k0 instead of -k1. That will be Black and White, but still using the CLRTBL. 3. In the command prompt, ru...

Yes.

You are getting that message, which also says "Simulation will continue on one processor!" because you are running with puffs (initd=2,3 or 4). If you can change to the particle mode initd=0 for 3-d particle, or initd=1 (Gaussian-horizontal vertical puff), then it will run as multi-processor. The in...

The exact spatial error as a function of time is not known.  Running the ensemble option as you are doing gives you an estimate of the uncertainty - if all the trajectories are close together the error is relatively low, if they are far apart, the error is larger.  The trajectories only track the me...

For information on gravitational settling, see section 5.1 of
https://www.arl.noaa.gov/documents/reports/arl-224.pdf
and
https://ready.arl.noaa.gov/hysplitusersguide/S314.htm
The settling velocity can be forced by entering it as the dry deposition velocity.

Yes, but you need to do one at a time.

A good reference is the Basic Tutorial. Download it, start at the beginning and go through it to the end of the trajectory sections.
https://www.ready.noaa.gov/HYSPLIT_Tutorials.php

There are descriptions of the updates at https://www.arl.noaa.gov/hysplit/hysplit-model-updates/
and in the document subdirectory - file updates.txt
The tutorial was also updated - https://www.ready.noaa.gov/HYSPLIT_Tutorials.php