Dispersion Model • Re: HAZMAT Materials for Dispersion
Online HYSPLIT for registered users (at https://www.ready.noaa.gov/HYSPLIT_disp.php) supports the modeling of chemical dispersion and produces plume concentrations in parts per million (ppm). Both the...
View ArticleDispersion Model • How to do run with different starting locations at...
Hello, I am wanting to run a month long simulation, where there are emission of my pollutant at different location at each of these times. i.e., hour 1 release from 50 locations, while hour 2 release...
View ArticleHYSPLIT for LINUX • version v5.2.1
Hi I am looking for a binary or source code for hycs_std v5.2.1 (version of 5.2.1, Last Changed Date: 2022-05-16).Is it possible to get that file? Any leads?Many thanks!!Statistics: Posted by...
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Conversion programs • Converting French AROME and ARPEGE Models to ARL Format
Hello,I would like to use the French AROME and ARPEGE models in addition to the ECMWF European model for HYSPLIT.I already have a bash routine that allows me to convert ECMWF data to ARL format using...
View ArticleHYSPLIT for LINUX • Re: version v5.2.1
Are you looking for the public version 5.2.1 or the registered version?Statistics: Posted by sonny.zinn — December 3rd, 2025, 2:11 pm
View ArticleGeneral questions on meteorological data needed for HYSPLIT • Im glad I...
Thanks a lot! Quite a lot of data!Statistics: Posted by DonetteM — December 18th, 2025, 12:13 pm
View ArticleUsers • Use of HYSPLIT with idealized LES WRF simulations
Good morning everyone,I am trying to use HYSPLIT downstream of idealized LES simulations of WRF (2 m resolution in x, y, and z). I am able to run the arw2arl preprocessor without errors; however, the...
View ArticleHYSPLIT for LINUX • HYSPLIT newer version slower
Hello,I've recently upgraded from version 4.2 to version 5.4 and when running identical runs on the same computer I am seeing that version 5.4 is significantly slower than version 4.2. Is this...
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Conversion programs • GRIB2 to ARL with api2arl_v3
Hello,I am trying to convert custom GRIB2 meteorological data to ARL format usingapi2arl_v3, but the conversion fails immediately with:ECCODES ERROR : IO ERROR: Bad address: (null)STOP 900I have...
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HYSPLIT for LINUX • Extracting vertical velocity variance (w′²) by KBLT...
Hello,I am running HYSPLIT v5.4.2 on CentOS Linux 8, using hycs_std in concentration mode.My goal is to reproduce results similar to the developer paper figures, specifically the vertical velocity...
View ArticleUsers • Concatenated WRF-ARW file wont process
Hello, I have concatenated 85 files for a case study. When I try to convert WRF-ARW output to ARL format it processes the first time and then spit out this error. I made sure the files times were...
View ArticleUsers • What are the differences between HYSPLIT and FlexPart?
Hi all,I've started a PhD 3 month ago about combined effect of wildfires and heatwaves on human health. I'm interested in atmospheric dispersion models that can represent smoke plume trajectories,...
View ArticleDispersion Model • Large ram usage for dispersion backward models
I am running backwards dispersion models on a Linux server, using 0.25 degree GFS weather data with 1e6 particles with a simulation time of between 5 and 10 days. These simulations max out at 15GB ram...
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