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by alicec
March 23rd, 2023, 10:10 am
Forum: Dispersion Model
Topic: how to obatin running data
Replies: 2
Views: 22837

Re: how to obatin running data

The concentration output files are binary files and their format is described here. https://www.ready.noaa.gov/hysplitusersguide/S363.htm HYSPLIT distribution comes with a con2asc utility which will convert these files into ascii text files. There are some other utilities such ash xtrct_stn and con2...
by alicec
February 16th, 2023, 9:46 am
Forum: Dispersion Model
Topic: Top of Model Setting
Replies: 1
Views: 14563

Re: Top of Model Setting

In the CONTROL file (or through GUI) you set the concentration grid. https://www.ready.noaa.gov/hysplitusersguide/S313.htm I assume then that you are setting the vertical levels in the concentration grid up to 40 km? Since the GDAS does not give model winds above 20 hPa, then HYSPLIT will extrapolat...
by alicec
February 16th, 2023, 9:16 am
Forum: Users
Topic: Question about the .gbl files
Replies: 1
Views: 7582

Re: Question about the .gbl files

Please see section3 of the tutorial.
https://www.ready.noaa.gov/documents/Tu ... index.html
by alicec
December 15th, 2022, 9:07 am
Forum: Users
Topic: Average Meteorological data
Replies: 4
Views: 10193

Re: Average Meteorological data

You can find the description of the data_avrg utility program here (as well as other utility programs). https://www.ready.noaa.gov/hysplitusersguide/util.htm#data_avrg It sounds like you want to get a time average of the data over 4 months? We do not have a utility that does this. If you just need t...
by alicec
October 27th, 2022, 8:04 am
Forum: Users
Topic: meteorological data alternate download
Replies: 4
Views: 13029

Re: meteorological data alternate download

Most web browsers do not support ftp anymore. Please see this thread
search.php?keywords=winscp
by alicec
October 26th, 2022, 8:43 am
Forum: Trajectory Model
Topic: trajectories spanning multiple weeks of met data
Replies: 1
Views: 15956

Re: trajectories spanning multiple weeks of met data

You can run trajectories that require more than one meteorological data file on READY website. READY will simply create a CONTROL file that has more than one meteorological data file specified in it to cover the specified time period. See example below for trajectory that goes back 300 h. 22 10 15 1...
by alicec
September 30th, 2022, 7:00 am
Forum: Users
Topic: Issues with latlon exe file while computing trajectories over the whole domain
Replies: 5
Views: 17811

Re: Issues with latlon exe file while computing trajectories over the whole domain

The latlon program is just doing something very simple. It is creating the starting trajectory points on a regular lat-lon grid. Beginning and ending points are given by the first and second line. Spacing is given by the difference between the first and third lines. It isn't matching the grid points...
by alicec
September 29th, 2022, 5:29 pm
Forum: Users
Topic: Issues with latlon exe file while computing trajectories over the whole domain
Replies: 5
Views: 17811

Re: Issues with latlon exe file while computing trajectories over the whole domain

The **** is just caused because the latlon program wasn't taking into account that someone would run so many trajectories altogether. So it looks like your span is 11.492 degrees longitude 9.5029 degrees latitude Then your increment is 0.021 degrees longitude 0.0189 degrees latitude This gives about...
by alicec
September 28th, 2022, 4:23 pm
Forum: Users
Topic: Issues with latlon exe file while computing trajectories over the whole domain
Replies: 5
Views: 17811

Re: Issues with latlon exe file while computing trajectories over the whole domain

Can you please attach or copy the CONTROL file you are using as input into the latlon program? Points that are within 2 grid cells of the edge of the meteorological grid are considered outside of the domain. So if you are trying to give starting locations that are on the very edge of the meteorologi...
by alicec
September 23rd, 2022, 7:10 am
Forum: User Applications
Topic: grid domain
Replies: 6
Views: 35209

Re: grid domain

This looks like it is a plotting issue. There are a few choices here. 1. You can continue to use the plotting program provided (concplot) concplot has 38 options for customizing plots. You can set the contour levels, colors etc. You can also change the domain size to some extent. The HYSPLIT tutoria...

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