Search found 17 matches

by christopher.loughner
June 13th, 2019, 10:21 am
Forum: HYSPLIT for PCs
Topic: Mixing Height for Back Trajectory
Replies: 10
Views: 319

Re: Mixing Height for Back Trajectory

Hi, You can run vmixing in a command shell (i.e., not the gui). To open a command shell in windows, type "cmd" (without the quotes) in the windows search bar. Then move to the directory with your CONTROL and SETUP.CFG files (something like this: cd C:\test_vmixing) and execute the vmixing command (....
by christopher.loughner
June 11th, 2019, 11:33 am
Forum: HYSPLIT for PCs
Topic: Mixing Height for Back Trajectory
Replies: 10
Views: 319

Re: Mixing Height for Back Trajectory

Hi, You can use the vmixing program to extract mixing height for any time. In a command shell, move to the directory with your CONTROL and SETUP.CFG files and then execute vmixing ({directory of hysplit4\exec}\vmixing.exe -s2 -t2). The variable Zi in the output STABILITY.txt is the mixing height dep...
by christopher.loughner
June 10th, 2019, 10:45 am
Forum: HYSPLIT for PCs
Topic: Mixing Height for Back Trajectory
Replies: 10
Views: 319

Re: Mixing Height for Back Trajectory

Hi, The extra timestep is only a 1 minute timestep. In my tests, I only see differences between the old and updated versions at the initialization time. So, if you want correct the pressure and any diagnostic output (mixing depth for your case) at the initialization time, then I suggest running the ...
by christopher.loughner
June 6th, 2019, 3:48 pm
Forum: Dispersion Model
Topic: Sampling Interval Type (snapshot)
Replies: 2
Views: 83

Re: Sampling Interval Type (snapshot)

Hi Ming,

The interval is how frequent output is written to the output file.

Sampling interval: type hour minute
00 01 00 = instantaneous concentrations written to the output file every hour.
by christopher.loughner
June 6th, 2019, 3:39 pm
Forum: HYSPLIT for PCs
Topic: Mixing Height for Back Trajectory
Replies: 10
Views: 319

Re: Mixing Height for Back Trajectory

An update has been committed to the repository for the Linux version (Version 1011). If you don't have access to the source code, for now you can obtain the mixing height at the initial time and location of your trajectory using the profile program. If you are using the gui, click on Meteorology -> ...
by christopher.loughner
June 4th, 2019, 11:10 am
Forum: HYSPLIT for LINUX
Topic: Failure to Compile HYSPLIT LINUX on Cheyenne
Replies: 7
Views: 255

Re: Failure to Compile HYSPLIT LINUX on Cheyenne

Hi, See the Readme in the fcsubs directory for help in compiling it with something other than the gnu compiler. Note that this library is only used for converting some GRIB meteorological datasets / model output if using the C version of the fcsubs libarary, so you may not need it. For compiling wit...
by christopher.loughner
May 31st, 2019, 4:44 pm
Forum: HYSPLIT for PCs
Topic: Mixing Height for Back Trajectory
Replies: 10
Views: 319

Re: Mixing Height for Back Trajectory

Hi, Thanks for helping me identify a bug. It appears HYSPLIT is printing out the location at the starting time, but the mixing depth after one timestep. It is also calculating the first timestep twice. I am currently testing a bug fix. I will reply back after I post a fix to the Linux version to the...
by christopher.loughner
October 16th, 2018, 12:30 pm
Forum: HYSPLIT for LINUX
Topic: HYSPLIT Parallel mode installation
Replies: 6
Views: 1167

Re: HYSPLIT Parallel mode installation

HYSPLIT run with MPI should be faster. To run HYSPLIT from the testing directory and to keep track of the computational time use the following commands: with MPI using 4 CPUs: time -v mpirun -np 4 ../exec/hycm_std serially: time -v ../exec/hycs_std The only thing you need to change in the Makefile i...
by christopher.loughner
August 1st, 2018, 3:06 pm
Forum: Dispersion Model
Topic: Changing random number generator seed
Replies: 2
Views: 1527

Re: Changing random number generator seed

The seed id is set in hymodelc.F with the variable seed_id. seed_id is set to -1 and for MPI and ensemble runs, the seed_id is set to -ABS(job_id+1) and -ABS(ens_id), respectively. If you edit hymodelc.F, recompile your programs built from hymodelc.F by typing "make program_name" in the exec directo...