Search found 661 matches

by ariel.stein
September 20th, 2018, 9:22 am
Forum: Dispersion Model
Topic: Compute particle loading in the domain
Replies: 1
Views: 1225

Re: Compute particle loading in the domain

Please take a look at the MESSAGE file. When you reach the main computation, the MESSAGE file will show a series of outputs that look like the following:
NOTICE main: 1 44039103 125 4.9999949E-02

The last column represents the total mass that the model is computing.
by ariel.stein
September 20th, 2018, 9:19 am
Forum: HYSPLIT for LINUX
Topic: FATAL ERROR: File not found:cdump
Replies: 1
Views: 2528

Re: FATAL ERROR: File not found:cdump

You are getting that message because the GUI is trying to find a concentration file that has not been generated. Please make sure you are generating a cdump file with some content on it. The GUI will not close when you close your GS window. It is supposed to continue working so you can do other calc...
by ariel.stein
September 6th, 2018, 3:16 pm
Forum: Developers
Topic: Uncertainty along trajectory endpoint
Replies: 3
Views: 4270

Re: Uncertainty along trajectory endpoint

This "noise" function or dispersion/turbulent component is a function of time and ws stdev. The uncertainty, as you mentioned in your comment, increases as you go further back in time. In principle, the concentration mode is just a group of trajectories that have a turbulent component included in th...
by ariel.stein
September 6th, 2018, 2:52 pm
Forum: Users
Topic: Problem downloading meteorology data
Replies: 1
Views: 1216

Re: Problem downloading meteorology data

How are you downloading the data? through a web browser?
by ariel.stein
August 31st, 2018, 1:27 pm
Forum: Developers
Topic: Uncertainty along trajectory endpoint
Replies: 3
Views: 4270

Re: Uncertainty along trajectory endpoint

Conceptually it makes sense. However, your 2-D Gaussian noise should reflect the state of the atmosphere. Ideally, you should use the standard deviation of the horizontal wind speed as a measure for the with of your Gaussian distribution. HYSPLIT explicitly calculates the standard deviations in the ...
by ariel.stein
August 28th, 2018, 12:10 pm
Forum: Users
Topic: Problems with ERAInterim data
Replies: 1
Views: 1135

Re: Problems with ERAInterim data

Please make sure you have all the required meteorological variables in the ARL meteorological file that you created. Use the utility program such as chk_file located in the exec directory to see if the variables exist.
by ariel.stein
July 30th, 2018, 4:36 pm
Forum: HYSPLIT for Mac OS X
Topic: ascii2shp conversion software for Mac?
Replies: 6
Views: 5642

Re: ascii2shp conversion software for Mac?

Here is the program. Please delete the .txt extension.
by ariel.stein
July 30th, 2018, 4:31 pm
Forum: Dispersion Model
Topic: Changing random number generator seed
Replies: 2
Views: 2207

Re: Changing random number generator seed

Unfortunately, the random number generator seed cannot be changed without recompiling the code.
by ariel.stein
May 16th, 2018, 3:34 am
Forum: Trajectory Model
Topic: Trajectory height does not ascend
Replies: 3
Views: 2706

Re: Trajectory height does not ascend

The problem you are having is that your trajectories are hitting the ground.
Please take a look at the discussion about the that topic:
viewtopic.php?f=27&t=295&hilit=trajectory+hits+ground
by ariel.stein
May 9th, 2018, 10:17 am
Forum: General questions on meteorological data needed for HYSPLIT
Topic: USER ENTERED UPPER AIR DATA NO WORKING
Replies: 1
Views: 2809

Re: USER ENTERED UPPER AIR DATA NO WORKING

Here you can find some information about the user entered meteorological data:
https://www.ready.noaa.gov/documents/Tu ... enter.html