HYSPLIT Forum: hysplitbbs.arl.noaa.gov

All the fields in a HYSPLIT meteorology file are on the same grid, so yes, the GDAS1 terrain height is at 1 degree resolution. There is no finer resolution. The NCEP/NCAR reanalysis archive does not have terrain height, so HYSPLIT uses the surface pressure, which is in the file, to estimate the heig...

It is possible to automatically run trajectories for a long time period using the "Run Daily" trajectory feature in the PC/Mac GUI after you download hysplit-compatible meteorology for the time period. See Section 6.1 Frequency Analysis in the Tutorial - https://ready.arl.noaa.gov/HYSPLIT_Tutorials....

I meant that the Pasquill stability class is not input to the HYSPLIT dispersion model. You are entering the Pasquill stability, along with meteorology observations to create a gridded meteorology file for input to the HYSPLIT dispersion model. Then with that meteorology, getting the thin plume. The...

Just run it once for each location.

Where/how are you running HYSPLIT, and with what meteorology? The Pasquil stability is not an input to HYSPLIT.

1. See a description of HYSPLIT limitations at https://www.ready.noaa.gov/hypub/limitations.html 2. The HYSPLIT package does not include a program to plot vertical cross-sections of concentration. 3. Is the figure in QGIS different from the same plot in postscript/gif/pdf? Did you choose 'polygons' ...

Use the program profile.exe

Please see viewtopic.php?f=27&t=1657

Please see the Tutorial about trajectories and dispersion. https://ready.arl.noaa.gov/HYSPLIT_Tutorials.php. No single trajectory perfectly represents actual air motion, hence ensembles are preferable to single trajectories. Even though you are only interested in smoke 6 feet off the ground, what st...

We found bugs in the HYSPLIT-compatible GFS files related to precipitation. HYSPLIT should not be run with wet deposition until this is resolved. hysplit.tCCz.gfs0p25f - The precipitation in the file is labeled TPPA (total accumulation) but the data are really TPP6 (up to 6-h accumulation). READY me...