METEOROLOGY – CLOUD & VIIBILITY CALCULATOR
Smoke Plume Visibility
A precise tool.
What is the Smoke Plume Visibility & How does it work?
The visibility of a smoke plume is significantly affected by the concentration of particulate matter, particularly PM2.5. These tiny particles can scatter and absorb light, reducing visibility.
V = frac{L}{1 + k cdot C}
V = Visibility (km)
L = Initial visibility in clean air (km)
k = Extinction coefficient
C = Concentration of PM2.5 (mu g/m^3)
L = Initial visibility in clean air (km)
k = Extinction coefficient
C = Concentration of PM2.5 (mu g/m^3)
The formula above shows how visibility decreases as the concentration of PM2.5 increases. The extinction coefficient, k, is a constant that depends on the size and composition of the particles.
Parameters
Result
—
Frequently Asked Questions
How does PM2.5 affect visibility?
PM2.5 particles scatter and absorb light, reducing visibility as their concentration increases.
What is the role of the extinction coefficient in this calculation?
The extinction coefficient, k, is a constant that depends on the size and chemical composition of PM2.5 particles.
How do I interpret the visibility result from this calculator?
The result shows how far you can see through the smoke plume based on the given PM2.5 concentration.
Can this formula be used for other types of air pollution?
While similar, the formula is specifically calibrated for PM2.5 and may not directly apply to other pollutants without adjustment.
What is the initial visibility (L) in clean air?
The initial visibility (L) refers to the maximum distance you can see in completely clear air, typically measured in kilometers.
How does temperature affect smoke plume visibility?
Temperature can influence visibility by affecting how quickly pollutants disperse and by changing the density of the air.
Can this calculator predict visibility changes over time?
No, this calculator provides a snapshot of visibility based on current PM2.5 levels; it does not account for temporal changes or dispersion patterns.
Results are for informational purposes only and do not constitute professional advice.