Search found 264 matches

by alicec
November 5th, 2020, 9:48 am
Forum: Wildfire Smoke
Topic: CA 2018 Wildfires Control/setup help
Replies: 1
Views: 200

Re: CA 2018 Wildfires Control/setup help

There are several problems. The CONTROL file that you posted will not work with your EMISS1.txt file. The number of starting locations in the CONTROL file needs to match the number in EMISS1.txt. Also in EMISS1, you have 10 starting locations in your top line, but you only provide 5. Also please che...
by alicec
November 5th, 2020, 9:29 am
Forum: General questions on meteorological data needed for HYSPLIT
Topic: issues on running hysplit with ARL generated by ERA5.
Replies: 1
Views: 140

Re: issues on running hysplit with ARL generated by ERA5.

HYSPLIT only applies the cyclic boundary conditions to global data. So in your first dataset it sees the 'edge' of the dataset at -180 and 180. In your second data set the edges are now at 0 and 360. You will still have truncations with the 0-360 data, just in a different place. Currently the only w...
by alicec
November 5th, 2020, 9:24 am
Forum: Dispersion Model
Topic: Help with HYSPLIT Concentration Setup
Replies: 4
Views: 573

Re: Help with HYSPLIT Concentration Setup

You do not have the averaging time specified in your control file. See below the line which is all zeros in bold. It should be something like 00 01 00 https://ready.arl.noaa.gov/hysplitusersguide/S313.htm 18 11 08 00 1 39.729 -121.626 10.0 36 0 10000.0 1 /ready_archives/nam12/ 20181108_nam12 1 PM25 ...
by alicec
November 5th, 2020, 9:07 am
Forum: Trajectory Model
Topic: Error in backward tracking when encountering the dateline
Replies: 1
Views: 146

Re: Error in backward tracking when encountering the dateline

Is the dataset global?
You may encounter this problem if you have a data which covers the poles but not
the whole globe - e.g. it covers -180,180 and then from 45 latitude to 90 latitude.
HYSPLIT will only apply cyclic boundary conditions to a global dataset.
by alicec
October 8th, 2020, 8:50 am
Forum: HYSPLIT for LINUX
Topic: Wrong EMITIMES formatting?
Replies: 1
Views: 450

Re: Wrong EMITIMES formatting?

You need to make sure that your CONTROL file has as many source locations as you have in your EMITIMES file. Since you have two sources here, you should have two in your CONTROL file as well. HYSPLIT allocates the arrays from the CONTROL file and then reads the EMITIMES file. So if number of sources...
by alicec
October 8th, 2020, 8:20 am
Forum: Dispersion Model
Topic: Help with HYSPLIT Concentration Setup
Replies: 4
Views: 573

Re: Help with HYSPLIT Concentration Setup

Can you attach your CONTROL file as well?
Thanks.
by alicec
October 5th, 2020, 11:48 am
Forum: Conversion programs
Topic: ERA52ARL Converter
Replies: 2
Views: 478

Re: ERA52ARL Converter

Thanks for pointing out some inconsistencies and errors. - The correct conversion for TCLD is 100. It is only used in the GEM part of HYSPLIT. - Yes HYSPLIT convention is that upward sensible heat flux is positive so it looks like the conversion factor here should be negative. Yes, HYSPLIT will use ...
by alicec
September 25th, 2020, 8:39 am
Forum: Dispersion Model
Topic: HYSPLIT Output MASS matter
Replies: 5
Views: 333

Re: HYSPLIT Output MASS matter

Please try the following. 1. The most important thing is to set the last line in your control file to 0. This option causes more particles to be generated and is not recommended for most applications. For long runs, this option will very often cause maxpar to be exceeded. https://ready.arl.noaa.gov/...
by alicec
September 24th, 2020, 9:25 am
Forum: Dispersion Model
Topic: HYSPLIT Output MASS matter
Replies: 5
Views: 333

Re: HYSPLIT Output MASS matter

Yes - you are correct - my answer was not very clear and I'm going to delete it so as not to confuse future readers. The deposition is accumulated over each time period. Are you trying to emit 14.65e15 kg/hr for 96 hours? That is what you have set. It looks like you need to increase your MAXPAR. Loo...
by alicec
September 23rd, 2020, 1:50 pm
Forum: Developers
Topic: Changing particle density and size during Concentration calculation
Replies: 1
Views: 396

Re: Changing particle density and size during Concentration calculation

It sounds like you should be able to use the ichem=2 and the CHEMRATE.TXT file. https://www.ready.noaa.gov/documents/Tutorial/html/chem_linear.html You could define multiple pollutatants and then specify the conversion rates. something like 1 2 1.0 1.0 2 3 1.0 1.0 3 4 1.0 1.0 start off with emitting...