HYSPLIT Forum: hysplitbbs.arl.noaa.gov

Puffs will continue to be simulated with HYSPLIT if it is outside of the concentration domain, but within the meteorological domain in case the puff is re-circulated back into the concentration domain. If you would like HYSPLIT to not simulate the transport of this puff after it is transported outsi...

You need to make sure WRF is output at a constant interval. You need to edit your WRF namelist.input file to ensure that your output time step is divisible by your model time step. If you are using the adaptive time step, you need to ensure that the output is being written out at the desired output ...

Refer to the file README_external_libraries.txt in the top directory of your pre-compiled version of HYSPLIT. Before running a pre-compiled executable, check to make sure all required libraries are properly linked to the executable. For hycm_std, type: ldd hycm_std If any library is not found, you w...

Thanks for bringing this to our attention. HYSPLIT uses a two digit year and assumes dates between 1940-2039. We will work on a fix to this issue. In the meantime, you can trick HYSPLIT in simulating your time period by changing the dates in your ARL files using the edit_head utility program found i...

Please try downloading HYSPLIT again. This file should be in the working directory.

Yes. Go to the concentration > setup run > pollutant, deposition, grids setup > grid menu to setup your concentration grid. Note that the trajectory > display > frequency menu has a few different options for setting the grid resolution for creating the tfreq.bin file.

No. Pressure, potential temperature, ambient temperature, precipitation, mixing depth, relative humidity, specific humidity, water vapor mix ratio, solar radiation, and terrain height are the only variables available for output in a HYSPLIT trajectory run at this time.

Yes. Don't set ICHEM=8 and set which STILT option you would like to use individually in your SETUP.CFG file (i.e., IDSP=2, KBLT=5, KMIXD=3, VSCALES=-1.0, CAPEMIN=-2.0). Note that not setting ICHEM=8 will result in no PARTICLE.DAT and PARTICLE_STILT.DAT files to be produced, which requires CMASS=1.

For obtaining HYSPLIT for Linux, see:

https://www.ready.noaa.gov/HYSPLIT_linux.php

There are precompiled linux executables available that are compatible with MPI. Another option is to request the source code for you to compile yourself.

Yes, you can run with multiple species. In the Concentration Setup menu 1) click on the Pollutants, Deposition, and Grids setup button; 2) under pollutant change =1 to =2; and 3) click on specie 1 and specie 2 under pollutant and deposition to configure the emissions rate and deposition properties f...