HYSPLIT Forum: hysplitbbs.arl.noaa.gov

Dear alicec,

I am very sorry that I attached a wrong CONTROL file for the six source location simulation. Please find the attached correct one.

Your help would be much appreciated. Thanks.


Kind Regards,

Ming

Please see the attached MESSAGE files. Thanks.

Dear alicec, Thank you very much for your reply. I have run two simulations today again, and I set the sampling domain: Span (80.0, 100.00) and Spacing (0.25*0.25). It should be large enough to sample the deposited particles. Simulation 1: one source location. Simulation 2: six source locations (the...

Dear alicec, Thank you very much for your help. ' HYSPLIT takes a small shortcut and uses the location of the computational particle to calculate the grid area rather than the center of the concentration grid square. So the larger grid sizes may be off by a few particles if the particles are concent...

Thanks for your help, alicec. So deposition velocity is actually not gravitational velocity? From what I understand, the deposition velocity is a kind of velocity that is used to calculate the deposition flux. The value of deposition velocity depends on the types of particles or gases. That is why i...

HYSPLIT takes a small shortcut and uses the location of the computational particle to calculate the grid area rather than the center of the concentration grid square. So the larger grid sizes may be off by a few particles if the particles are concentrated near an edge. Please double check your numbe...

Dear alicec, Thank you very much for your help. I really appreciate it. I figured it out. The formula should be Area = (111198.323)^2 * Latspan * Lonspan * COS(Lat*π/180). In my case, the formula in Excel is Area = (111198.323)^2 * 0.05 * 0.05 * COS(RADIANS(E2)), where 0.05 (Latspan) * 0.05 (Lonspan...

Do you mean something like 0.05Deg × π/180 = 0.0008727Rad? Thanks.

No, I do not think so. I am sorry that I do not have much knowledge on that. Could you please give me an example? Thanks.

Thank you very much, alicec.

I still could not get the correct numbers using your formula [e.g. (111198.323)^2 * 0.05 * 0.05 * COS(E2)]. I got negative values. Please see the attached file. Thanks.