1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

A Question about Radiance, Solar Flux and Reflectance

  1. Jan 18, 2016 #1
    I stumbled upon this equation for a Lambertian uniform target:

    ##\rho^{*} = \frac{\pi L}{\mu_s E_s}##,

    where ##\rho^{*}## is the reflectance, ##L## is the measured radiance, ##E_s## is the solar flux at the top of the atmosphere, and ##\mu_s## is the cosine of the sun zenith angle, ##\theta_s##.

    The equation confuses me if I were to consider a monochromatic reflectance of the target, i.e. the reflectance of the target at a specific wavelength. What should be the measured reflectance for this case, is it the spectral radiance, should its units be ##\frac{W}{m^2 nm^2 sr}##? How about the solar flux (I considered it to be equivalent to the irradiance of the source at the target), should it be spectral irradiance, which I can calculate by the black-body radiation equation?
     
  2. jcsd
  3. Jan 23, 2016 #2
    Thanks for the post! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: A Question about Radiance, Solar Flux and Reflectance
  1. Solar Flux (Replies: 2)

  2. Question about flux (Replies: 1)

Loading...