Search found 114 matches

by alicec
April 18th, 2019, 7:17 am
Forum: General questions on meteorological data needed for HYSPLIT
Topic: 0.25 degree data available?
Replies: 1
Views: 8

Re: 0.25 degree data available?

You can browse available datasets here: You might want to look at the WRF dataset if you are looking at CONUS. GDAS 0.5 degree is available from 2007. https://www.ready.noaa.gov/archives.php. You could also look at using the ERA5 dataset from ECMWF. You would have to download the data yourself and u...
by alicec
April 18th, 2019, 7:10 am
Forum: Dispersion Model
Topic: Linux version
Replies: 3
Views: 17

Re: Linux version

Do not write CONTROL after the hycs_std. hycs_std automatically looks for a file called CONTROL and SETUP.CFG in the directory that it is executed in. So the command is simply hycs_std If you input text after the command, then it looks for a file with a suffix that matches the text. For example, thi...
by alicec
April 16th, 2019, 9:41 am
Forum: Dispersion Model
Topic: Linux version
Replies: 3
Views: 17

Re: Linux version

The executables are

hycs_std
hyts_std

So you just need to type in the path along with the executable name.
e.g.

/home/hysplit/trunk/exec/hycs_std


Alice
by alicec
April 8th, 2019, 9:36 am
Forum: Users
Topic: GRIB2 to ARL with Eccodes
Replies: 4
Views: 151

Re: GRIB2 to ARL with Eccodes

The new version of api2arl uses eccodes. However the functionality of api2arl has not changed.
The only difference is that it is compiled to use the eccodes libraries rather than the grib-api libraries.
by alicec
March 19th, 2019, 3:21 pm
Forum: Dispersion Model
Topic: Apply HYSPLIT to very small area (100x100 m^2)
Replies: 1
Views: 97

Re: Apply HYSPLIT to very small area (100x100 m^2)

You can specify a very high resolution concentration grid in HYSPLIT. https://ready.arl.noaa.gov/hysplitusersguide/S313.htm However please see this discussion: https://hysplitbbs.arl.noaa.gov/viewtopic.php?t=221 Limitations include a minimum 1 minute time step and the resolution of the meteorologica...
by alicec
March 11th, 2019, 10:03 am
Forum: Users
Topic: Initializing runs with pressure levels instead of altitude levels
Replies: 1
Views: 74

Re: Initializing runs with pressure levels instead of altitude levels

There is no option for this.
You will have to do the conversion yourself.
by alicec
February 25th, 2019, 10:58 am
Forum: Conversion programs
Topic: Error reading and generating trajectories of ERA interim converted ARL data
Replies: 1
Views: 109

Re: Error reading and generating trajectories of ERA interim converted ARL data

Please see these threads: https://hysplitbbs.arl.noaa.gov/viewtopic.php?f=25&t=1206&p=3296&hilit=chk_file#p3296 https://hysplitbbs.arl.noaa.gov/viewtopic.php?f=25&t=1229&p=3389#p3389 https://hysplitbbs.arl.noaa.gov/viewtopic.php?f=14&t=202&p=3781#p3781 Please try the ecm2arl utility - you will need ...
by alicec
February 25th, 2019, 10:45 am
Forum: Users
Topic: Error during ERA-Interim files conversation
Replies: 3
Views: 176

Re: Error during ERA-Interim files conversation

Please see these threads: https://hysplitbbs.arl.noaa.gov/viewtopic.php?f=25&t=1229&p=3389#p3389 https://hysplitbbs.arl.noaa.gov/viewtopic.php?f=14&t=202&p=3781#p3781 In particular - please post contents of MESSAGE file: If you go into your hysplit4/working directory you will find a MESSAGE file you...
by alicec
February 6th, 2019, 3:36 pm
Forum: Users
Topic: Can api2arl be used alone?
Replies: 2
Views: 163

Re: Can api2arl be used alone?

api2arl requires some libraries from the HYSPLIT distribution.
Are you compiling the distribution on the linux machine yourself? Please give more details on what you are doing.
You can certainly convert the data on a linux machine and then use it with HYSPLIT run on a windows machine.
by alicec
February 6th, 2019, 12:19 pm
Forum: Users
Topic: NUMPAR v emission rate
Replies: 4
Views: 328

Re: NUMPAR v emission rate

The emission rate determines how much mass is released while numpar determines how many computational particles are released. For example suppose you define an emission rate of 1000 (kg/hour) and you release 1000 computational particles in an hour. Then each computational particle has a mass of 100(...