Hello,
I am running the HYSPLIT model with WRF input data. The WRF simulation is aimed on leeside warming of a mountain range (max. elevation about 1300 m ASL). The WRF model top is 25 hPa (ca. 25 000 m). I would like to compute trajectiories in HYSPLIT to get information about the source region of subsiding air. However, I am a bit confused by the impact of the option Top of model in HYSPLIT (under Trajectory - Setup run) on computed backward trajectories.
When this parameter is set to 25 000 m, the trajectory is short and stops just before the mountains.
When set to 40 000 m the trajetory is reasonably long with regard to environmental wind speed and gets to > 1500 m ASL
For 100 000 m, the trajectory is very similar but not completely the same as for 40 000 m.
I am thus wandering what setup of HYSPLIT model top is the best for my case and why there are the differences.
I am enclosing trajectories for all cases.
Thank you very much!
Michael
Impact of the HYSPLIT model top to trajectories
Topics about the HYSPLIT trajectory model.
-
- Posts: 1
- Joined: May 27th, 2022, 5:56 am
- Registered HYSPLIT User: No
Jump to
- HYSPLIT
- ↳ Users
- ↳ Developers
- ↳ Bugs
- ↳ Announce
- ↳ General Comments
- ↳ Trajectory Model
- ↳ Dispersion Model
- ↳ User Applications
- ↳ In-line WRF-HYSPLIT coupling
- HYSPLIT Platform Specific
- ↳ HYSPLIT for PCs
- ↳ HYSPLIT for Mac OS X
- ↳ HYSPLIT for LINUX
- ↳ HYSPLIT on the READY Server
- Meteorological Data
- ↳ General questions on meteorological data needed for HYSPLIT
- ↳ Conversion programs
- ↳ Repositories of HYSPLIT formatted data
- ↳ MeteoInfo Software
- HYSPLIT Research
- ↳ Volcanic Ash
- ↳ Wildfire Smoke
- ↳ Dust
- ↳ Chemicals
- ↳ Radiological
- ↳ Cluster Analysis
- HYSPLIT Workshop
- ↳ 2022 HYSPLIT Workshop Questions
- ↳ 1. Installing HYSPLIT
- ↳ 2. Testing the installation
- ↳ 3. Gridded meteorological data files
- ↳ 4. Trajectory calculations
- ↳ 5. Trajectory options
- ↳ 6. Trajectory statistics
- ↳ 7. Air concentration calculations
- ↳ 8. Configuring the CAPTEX simulation
- ↳ 9. Air concentration parameter sensitivity
- ↳ 10. Alternate display options
- ↳ 11. Pollutant transformations and deposition
- ↳ 12. Air concentration uncertainty
- ↳ 13. Source attribution methods
- ↳ 14. Wildfire smoke and dust storms
- ↳ 15. Radioactive pollutants and dose
- ↳ 16. Volcanic eruptions with gravitational settling
- ↳ 17. Custom simulations
- ↳ 2021 HYSPLIT Workshop Questions
- ↳ 1. Installing HYSPLIT
- ↳ 2. Testing the installation
- ↳ 3. Gridded meteorological data files
- ↳ 4. Trajectory calculations
- ↳ 5. Trajectory options
- ↳ 6. Trajectory statistics
- ↳ 7. Air concentration calculations
- ↳ 8. Configuring the CAPTEX simulation
- ↳ 9. Air concentration parameter sensitivity
- ↳ 10. Alternate display options
- ↳ 11. Pollutant transformations and deposition
- ↳ 12. Air concentration uncertainty
- ↳ 13. Source attribution methods
- ↳ 14. Wildfire smoke and dust storms
- ↳ 15. Radioactive pollutants and dose
- ↳ 16. Volcanic eruptions with gravitational settling
- ↳ 17. Custom simulations
- ↳ 2020 HYSPLIT Workshop Questions
- ↳ 1. Installing HYSPLIT
- ↳ 2. Testing the installation
- ↳ 3. Gridded meteorological data files
- ↳ 4. Trajectory calculations
- ↳ 5. Trajectory options
- ↳ 6. Trajectory statistics
- ↳ 7. Air concentration calculations
- ↳ 8. Configuring the CAPTEX simulation
- ↳ 9. Air concentration parameter sensitivity
- ↳ 10. Alternate display options
- ↳ 11. Pollutant transformations and deposition
- ↳ 12. Air concentration uncertainty
- ↳ 13. Source attribution methods
- ↳ 14. Wildfire smoke and dust storms
- ↳ 15. Radioactive pollutants and dose
- ↳ 16. Volcanic eruptions with gravitational settling
- ↳ 17. Custom simulations
- ↳ 2019 HYSPLIT Workshop Questions