Dear all,
I am trying to understand how does the dry deposition remove the gaseous pollutant in my disperison run. I have noticed a feature that seems strange for me. To consider my pollutant as gas I set all the zeros in the [particle diameter, density, shape] line of the CONTROL file. Then, I set the following in the next line:
0.0 28.0 0.1 1.6 0.01 [deposition velocity, molecular weight, A-ratio, D-ratio, Henry]
0.0 value of velocity means that it has to be calculated according to the followed values, including the molecular weight. However, I have played a lot with different weight values and I see almost no change in the concentration output results. Even if I change the molecular weight from 28 to 5000 (!) - the change in concentration is quite neglegible!
Is it normal? Or I am doing something wrong, or don't understand something simple?..
Thank you in advance!
Dmitry
p.s. my HYSPLIT is version 4, rev 951
turning on deposition of gas
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- ↳ 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
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