Table of Contents
Impact on cloud optical thickness and droplet size on radiance field, visibility of cloudbow
Calculate the upwelling radiance at 500nm the top of the atmosphere for an atmosphere including a liquid water cloud layer. Use the discrete ordinate method with intensity correction for your simulation (rte_solver disort2). Vary the cloud optical thickness (wc_set_tau) and effective droplet size (in wc.dat) and describe the results.
Hints:
- Use the libRadtran input file and the plotting script from exercise 6 to start.
- Look at exercise 8 to see how a cloud layer is defined in libRadtran.
Varying Droplet Size:
TOA, Sun at Zenith, Upwelling Radiation at 500 nm, Cloud 2-3 km, LWC 0.01, Droplet Radius 2 mu
TOA, Sun at Zenith, Upwelling Radiation at 500 nm, Cloud 2-3 km, LWC 0.01, Droplet Radius 10 mu
TOA, Sun at Zenith, Upwelling Radiation at 500 nm, Cloud 2-3 km, LWC 0.01, Droplet Radius 25 mu
Varying Wavelength:
TOA, Sun at Zenith, Upwelling Radiation at 350 nm, Cloud 2-3 km, LWC 0.01, Droplet Radius 25 mu
TOA, Sun at Zenith, Upwelling Radiation at 750 nm, Cloud 2-3 km, LWC 0.01, Droplet Radius 25 mu
TOA, Sun at Zenith, Upwelling Radiation at 350nm (blue), 500nm (yellow) 750 nm (red), Cloud 2-3 km, LWC 0.01, Droplet Radius 25 mu
Varying LWC:
TOA, Sun at Zenith, Upwelling Radiation at 500 nm, Cloud 2-3 km, LWC 0.001, Droplet Radius 10 mu
TOA, Sun at Zenith, Upwelling Radiation at 500 nm, Cloud 2-3 km, LWC 0.01, Droplet Radius 10 mu
TOA, Sun at Zenith, Upwelling Radiation at 500 nm, Cloud 2-3 km, LWC 0.25, Droplet Radius 10 mu
TOA, Sun at 30°, Upwelling Radiation at 500 nm, Cloud 2-3 km, LWC 0.01, Droplet Radius 10 mu