# How to Compute Visibility [duplicate]

I have the following data about a region, and would like to compute the visibility for that region, i.e. the distance that a person could see ahead of them.

I have:

1. precipitation (mm/day)
2. dewpoint(degree C)
3. temperature (degree C)
4. relative humidity (%)
5. wind speed (km/h)
6. pressure (kPa)

Does anyone know how I can compute some meaningful visibility measure out of this? This is for a computer model I'm using to model something else entirely, which needs visibility. So I'm stuck having to reconstruct that information from what I have

I'd appreciate any help

• You need atmos. particulate matter concentrations to calculate visibility. See e.g. Malm et al. (1994) or Pitchford et al. (2007) for formulas. The formula of Malm et al. (1994) is also provided by Matthias (2008). You might assume some standard aerosol particle profile. However, this is not optimal ... . Maybe have a look onto the IMPROVE Homepage (Interagency Monitoring of Protected Visual Environments). – daniel.neumann Jun 6 '16 at 22:15