HYSPLIT Forum: hysplitbbs.arl.noaa.gov

Can you please post your CONTROL and SETUP files ?

The "results" folder is used to store HYSPLIT simulation results. This section actually uses the source-receptor file srm.bin created in section 13.4. There are no new HYSPLIT runs. The statistical results and figures are included in the tutorial html pages.

Yes, the backward dispersion run by setting the integration time to a negative value gives useful information. The results provide the source-receptor sensitivities (which are sometimes called the footprint of the receptors/measurement). The forward model runs can provide such information as well. I...

Yes, your approach is correct in general. (26) 1 (Number of pollutants: I have one pollutant, pm2.5) (27) 0.8. 2, 1 (Diameter, density and shape: I used Rolph et al. 2009 as reference.) They are fine. 28(2)- Deposition velocity (m/s), Pollutant molecular weight (Gram/Mole), Surface Reactivity Ratio,...

Heat will be important to calculate releae height for smoke emission (see section 14.1).
The example in 16.5 is for volcanic ash applications where the emission heights are explicitly provided in the EMITIMES file. In this case, HEAT is not used.

Although this thread is titled as "vehicular emissions", the content seems to indicate you are interested in straw stubble burning. It is possible to only issue burning permits when smoke generated from stubble burning has less effect to human health (e.g. smoke will not transport to populated area)...

Yes, I agree. Because of the stochastic feature of atmospheric flow, it is always better to have multiple trajectory runs instead of only relying on a single trajectory.

It is normal to have the max/min values differ from the results shown in the tutorial. However, if the differences are too much it may indicate something wrong.

'KG' at the very top shows the grid number. After a long list of "Namelist configuration", you will see the following ------------- Start computation messages ------------------- NOTICE advrng: (kg ,xyr,xy1) - 1 10 10 19 19 NOTICE metpos: (mtime,ftime) - 44039100 0 NOTICE metpos: (mtime,ftime) - 440...

The explanation can be found in the user guide. Additional decay time can be added using this field to estimate long-term doses. This calculation applies to either -t option but only for deposition doses. This option permits longer-term doses to be computed by adding additional decay to the existing...