Deposition and particle reflection

[jmanobianco]

Referencing closed ticket #245 on particle reflection, we are simulating agricultural spray drift with FLEXPART-WRF. For large droplets (e.g. 2500 micrometers) with significant terminal velocity, most all of them should not reflect when they hit the ground or the vegetation canopy. We are releasing a distribution of small and large droplets at 0.5 m above the ground. The large droplets should all settle out in a few seconds close to the release point and very few if any should reflect back into the air.

That aspect of reflection is simply not realistic for this application. We also note that there does not appear to be any deposition, perhaps given the settings we used. If the FLEXPART/FLEXPART-WRF physics are not really designed for this type application, we can choose alternate packages.

We would also be curious if there are similar studies looking at this application.