Search found 145 matches

by alicec
February 6th, 2019, 12:19 pm
Forum: Users
Topic: NUMPAR v emission rate
Replies: 4
Views: 680

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(...
by alicec
December 17th, 2018, 2:08 pm
Forum: General questions on meteorological data needed for HYSPLIT
Topic: WindNinja
Replies: 2
Views: 1859

Re: WindNinja

One of the existing conversion utilities could probably be modified to convert WindNinja output to an ARL file which could be used by HYSPLIT.
https://www.ready.noaa.gov/hysplitusersguide/S140.htm
https://www.ready.noaa.gov/hysplitusersguide/S128.htm
by alicec
December 17th, 2018, 1:07 pm
Forum: Users
Topic: running multiple trajectories in time
Replies: 2
Views: 779

Re: running multiple trajectories in time

Are you following the instructions here: https://ready.arl.noaa.gov/documents/Tutorial/html/traj_time.html Please copy the contents of SETUP.CFG and CONTROL files which the GUI generates in your post so we can see them. These files should be found in your working directory and are the inputs into HY...
by alicec
December 3rd, 2018, 10:38 am
Forum: HYSPLIT for LINUX
Topic: How to get meteorology output along the trajectory on LINUX
Replies: 3
Views: 841

Re: How to get meteorology output along the trajectory on LINUX

By default HYSPLIT looks for a CONTROL and SETUP.CFG file. CONTROL file https://www.ready.noaa.gov/hysplitusersguide/S262.htm and options for the namelist SETUP.CFG file (note that options that pertain to trajectory runs are noted). https://www.ready.noaa.gov/hysplitusersguide/S410.htm If you want t...
by alicec
December 3rd, 2018, 10:24 am
Forum: Dispersion Model
Topic: Extract particle path (start/stop) information
Replies: 4
Views: 1416

Re: Extract particle path (start/stop) information

If you need concentration files, then for most applications it is best to just setup your HYSPLIT run to produce the concentration files you need rather than to produce particle position files and convert them. There is a command line utility called par2conc which will convert pardump (particle posi...
by alicec
November 27th, 2018, 10:58 am
Forum: Dispersion Model
Topic: EMITIMES
Replies: 4
Views: 764

Re: EMITIMES

Yes, it should be YYYY MM DD HH DURATION(hhhh) #RECORDS YYYY MM DD HH MM DURATION(hhmm) LAT LON HGT(m) RATE(/h) AREA(m2) HEAT(w) 2018 06 01 09 0012 3 2018 06 01 09 00 1200 52.15 17.8 20.0 3567.0 1000.0 0.0 2018 06 01 09 00 1200 52.15 18.8 20.0 35697.0 1000.0 0.0 2018 06 01 09 00 1200 53.75 18.1 20.0...
by alicec
November 27th, 2018, 10:41 am
Forum: HYSPLIT for LINUX
Topic: How to get meteorology output along the trajectory on LINUX
Replies: 3
Views: 841

Re: How to get meteorology output along the trajectory on LINUX

The tutorial has example linux scripts in many of the sections. Simply click on the icon of a penguin at the top. https://ready.arl.noaa.gov/documents/Tutorial/html/test_traj.html You can simply edit the TRAJ.CFG and SETUP.CFG with any text editor and then use them to start a run. The user guide has...
by alicec
November 27th, 2018, 9:54 am
Forum: Users
Topic: Time varying source
Replies: 5
Views: 835

Re: Time varying source

You should only have two source locations in your control file. The number of source locations in the control file is important because array allocation occurs before the EMITIMES file is read. So the number of source locations in your control file multiplied by the number of particle sizes that you...
by alicec
November 26th, 2018, 12:57 pm
Forum: Users
Topic: Time varying source
Replies: 5
Views: 835

Re: Time varying source

Each Emission Cycle must have the same number of lines. So if you have 24 lines in your first emission cycle, you must also have 24 lines in your second emission cycle. If you don't need 24 lines in your second emission cycle, you can add "dummy" sources by setting the rate and duration to 0 for som...
by alicec
November 26th, 2018, 11:23 am
Forum: Users
Topic: Time varying source
Replies: 5
Views: 835

Re: Time varying source

An EMITIMES file can handle almost any emission scenario. https://www.ready.noaa.gov/hysplitusersguide/S417.htm Constructing the more complicated ones can be confusing though. Here is a short example of what you want to do (If I understand your description correctly). YYYY MM DD HH DURATION(hhhh) #R...