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Lara001
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Homework Statement
A thin haze layer overlies the ground and is composed of hydrated aerosols of 0.2 micron (µm) diameter. It scatters 50% of sunlight incident upon it when the sun is directly overhead.
a) What is the visible scattering optical depth of the layer?
Homework Equations
I'm not sure about what formula to use, but with the information given, i thought :
sigma = optical depth
t (transmissivity) = exp(-sigma*sec(theta))
The Attempt at a Solution
theta = 0
transmissivity = 1/2 ( as 50% isn't scattered, and I am assuming no absorption, though, it wasn't stated)
solving for sigma
sigma = 0.69 (2.d.p)