Search found 160 matches

by alicec
October 7th, 2019, 8:33 am
Forum: Conversion programs
Topic: Segmentation fault using era52arl
Replies: 7
Views: 129

Re: Segmentation fault using era52arl

It's difficult to trouble shoot a segmentation fault on someone else's system, so I'm not sure how helpful I can be.
What compiler are you using?
by alicec
October 1st, 2019, 7:59 am
Forum: Conversion programs
Topic: Segmentation fault using era52arl
Replies: 7
Views: 129

Re: Segmentation fault using era52arl

Can you send me the command you are using to download the files with the python script?
by alicec
September 27th, 2019, 12:31 pm
Forum: Conversion programs
Topic: Segmentation fault using era52arl
Replies: 7
Views: 129

Re: Segmentation fault using era52arl

What version of HYSPLIT are you using? Can you try running the era52arl without any inputs ./era52arl Should give you this: Usage: era52arl [-options] One pressure level file and at least one surface file must be input. The surface file(s) should have all the time periods that pressure level files h...
by alicec
September 18th, 2019, 8:41 am
Forum: Users
Topic: how to run an Excel data in Hysplite
Replies: 2
Views: 229

Re: how to run an Excel data in Hysplite

We provide a tutorial which is an excellent way to familiarize yourself with HYSPLIT.

https://ready.arl.noaa.gov/documents/Tu ... index.html
by alicec
September 17th, 2019, 8:00 am
Forum: Bugs
Topic: Transport artifact at poles
Replies: 3
Views: 2605

Re: Transport artifact at poles

The problem is that velocity is converted to grid points per unit time at each met grid point and then the velocity at the computational particle position (in grid points per unit time) is calculated. This causes issues at the poles because (A) the grid spacing at the pole is zero, so velocity in gr...
by alicec
August 19th, 2019, 8:56 am
Forum: Trajectory Model
Topic: "Flooring effect" on mixing layer depth data generated from GDAS files
Replies: 3
Views: 191

Re: "Flooring effect" on mixing layer depth data generated from GDAS files

By default HYSPLIT does set a minimum mixing depth (150m or 250m depending on the version of HYSPLIT you are using). Please see the documentation on why HYSPLIT uses this default. https://www.ready.noaa.gov/hysplitusersguide/S625.htm Mixed Layer Depth Computation KMIXD is used to control how the bou...
by alicec
August 9th, 2019, 4:34 pm
Forum: Dispersion Model
Topic: Deposition Velocity
Replies: 4
Views: 462

Re: Deposition Velocity

If I understand what you are saying correctly, then yes, you are correct. If you define a constant settling velocity for the particle (by specifying the deposition velocity for a 'particulate' computational particle), then you over-ride the calculation and the settling velocity is the value that you...
by alicec
August 9th, 2019, 10:12 am
Forum: Dispersion Model
Topic: PARINIT vs. EMITIMES
Replies: 7
Views: 1750

Re: PARINIT vs. EMITIMES

The PARINIT file basically contains a list of computational particles with their relevant characteristics. (Time, location, mass, etc.) With NINIT=1, HYSPLIT opens the file at the beginning of the simulation and looks for particles with the same time as the run start. If it finds some, then it reads...
by alicec
August 8th, 2019, 3:20 pm
Forum: Dispersion Model
Topic: even if the option of the pollutant is set to continuous release but is not continuously released.
Replies: 13
Views: 951

Re: even if the option of the pollutant is set to continuous release but is not continuously released.

Please review the tutorial to understand how changing the particle number affects results.

Section 7 is particularly relevant.
https://ready.arl.noaa.gov/documents/Tu ... _test.html