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intercomparisons:e6_ocean_planet
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| Both sides previous revision Previous revision Next revision | Previous revision | ||
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intercomparisons:e6_ocean_planet [2025/09/11 15:15] claudia |
intercomparisons:e6_ocean_planet [2025/11/04 14:38] (current) claudia |
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| * The surface is described by the ocean reflectance matrix using Mishchenko's code [[http://www.giss.nasa.gov/staff/mmishchenko/ftpcode/ocean.shadow.f|ocean.shadow.f]] (uses anti-clockwise convention for azimuth angle!) | * The surface is described by the ocean reflectance matrix using Mishchenko's code [[http://www.giss.nasa.gov/staff/mmishchenko/ftpcode/ocean.shadow.f|ocean.shadow.f]] (uses anti-clockwise convention for azimuth angle!) | ||
| * wind speed: 5 m/s | * wind speed: 5 m/s | ||
| - | * mean surface slope, according to Eq. 18 in Mishchenko and Travis 1997:\\ 2$\sigma^2$ = 0.5 $\cdot$ (0.003 + 0.00512 $\cdot$ u$_{10}$), where u$_{10}$ is the wind speed | + | * 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 |
| * refractive index of water: 1.33+0i | * refractive index of water: 1.33+0i | ||
| * wavelength: 450 nm | * wavelength: 450 nm | ||
| * Rayleigh depolarization factor: 0.03 | * Rayleigh depolarization factor: 0.03 | ||
| * Earth radius: 6371 km | * Earth radius: 6371 km | ||
| - | | + | |
| * Observer at 3.0e5 km distance from center of Earth at (lan, lon)=(0°, 0°) | * Observer at 3.0e5 km distance from center of Earth at (lan, lon)=(0°, 0°) | ||
| - | * Field of view includes complete planet: | + | * Field of view of 2.4° includes the complete planet: |
| - | * zenith angles: //vza:// -1.2° - +1.2°, increment 0.04° | + | * The result is an image with 61$\times$61 pixels with resolution 0.04°$\times$0.04°: |
| - | * azimuth angles: //vaa:// -1.2° - +1.2°, increment 0.04° | + | * Directions within the FOV should be randomly distributed |
| - | * Here the angles refer to the connection line between Earth center and observer. | + | * pixel center zenith angles: //vza:// -1.2° - +1.2°, increment 0.04° |
| + | * pixel center azimuth angles: //vaa:// -1.2° - +1.2°, increment 0.04° | ||
| + | * Here the angles refer to the connection line between Earth center and observer. | ||
| + | |||
| * Sun position: | * Sun position: | ||
| * latitude: //lat:// 0° | * latitude: //lat:// 0° | ||
intercomparisons/e6_ocean_planet.1757603721.txt · Last modified: 2025/09/11 15:15 by claudia
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