Search found 356 matches
- August 5th, 2019, 10:29 am
- Forum: Dispersion Model
- Topic: PARINIT vs. EMITIMES
- Replies: 7
- Views: 2590
There does not need to be a release given in the CONTROL file for the model to be initialized by the particles in the PARINIT file as long as the time of the particle position is during the run. See the description of NINIT at https://www.ready.noaa.gov/hysplitusersguide/S627.htm
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...
- July 2nd, 2019, 8:36 am
- Forum: General questions on meteorological data needed for HYSPLIT
- Topic: Extracting wind data from HYSPLIT GFSF files
- Replies: 3
- Views: 940
Just run it once for each location.
- July 1st, 2019, 8:10 am
- Forum: Users
- Topic: Simulation over Airport and using QGIS
- Replies: 1
- Views: 778
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' ...