Table 4
Computational time on one CPU (Intel(R) Xeon(R) CPU E5-2630 v4 @ 2.20GHz) for the full spectra (1000 wavelengths) of the degree of polarization and corresponding spectrally averaged relative standard deviations σ.
| Homogeneous planets |
|
|
Time [s] |
|
|
|||
| BPDF (Tsang) | 0.84 | 0.010 | 477 |
| Albedo 0.4 | 0.18 | 0.015 | 490 |
| Spectral albedo of grass | 0.46 | 0.010 | 480 |
| Liquid cloud (τ = 10.0) | 0.06 | 0.088 | 802 |
| Ice cloud (τ = 1.0) | 0.21 | 0.025 | 687 |
|
|
|||
| Inhomogeneous planets | P | σ(P) /P | time [s] |
|
|
|||
| ECMWF clouds & MODIS albedo | 0.18 | 0.006 | 29 |
| ECMWF clouds & BPDF | 0.25 | 0.005 | 28 |
Notes. The simulations were performed with Nph = 105 photons. The computational time is proportional to Nph and the corresponding standard deviation σ is proportional to 
. The numbers for the scenarios with ECMWF clouds correspond to monochromatic calculations at 555 nm for 10 June 2011.
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