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--- intercomparisons:d6_ocean [2025/09/15 09:28] – claudia
+++ intercomparisons:d6_ocean [2025/09/15 09:29] (current) – claudia
@@ Line 1: / Line 1: @@
+==== Case D6: Ocean surface ====
+This case includes the same setup as case D1 but including an ocean surface (reflectance matrix).
+//Setup://
+  * Ocean reflectance matrix by Mishchenko's code [[http://www.giss.nasa.gov/staff/mmishchenko/ftpcode/ocean.shadow.f|ocean.shadow.f]] (uses anti-clockwise convention for azimuth angle!)
+  * refractive index of water (1.33 + 0i)
+  * mean surface slope, according to Eq. 18 in Mishchenko and Travis 1997:\\ 2$\sigma^2$ = 0.003 + 0.00512 $\cdot$ u$_{10}$, where u$_{10}$ is the wind speed in m/s
+  * wind speed 2m/s
+  * scattering optical thickness (Rayleigh) of layer: 0.1
+  * no molecular absorption
+  * Rayleigh depolarization factor: 0.03
+  * Earth radius: 6371 km
+  * Thickness of layer: 120 km
+  * Sun-observer geometries as defined in general settings:
+      * //viewing zenith angles// (deg): [0, 9, 18, 26, 34, 41, 48, 54, 60, 65, 70, 74, 78, 81, 84, 86, 88, 89, 90] (up-looking at bottom of atmosphere, down-looking at top of atmosphere]
+      * //viewing azimuth angles// (deg): 0-180, 10° increment
+      * //solar zenith angles// (deg): [30, 60, 80, 87, 90, 93, 96, 99]
+      * //solar azimuth angle// (deg): 0
+      * //sensor altitude// (km): 0, 120