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Table 1

Infrared polarization: dependence on scattering properties.

Model Cloud particle Degree of polarizatione
foblate = 0.0 foblate = 0.1 foblate = 0.2

S1 Mie, MgSiO3a, reff = 0.1μm, veff = 0.05 0.42 +/– 0.07 % 0.72 +/– 0.07 % 1.23 +/– 0.08 %
S2 Mie, MgSiO3, reff = 0.1μm, veff = 0.05, λ = 1.67μmb 0.21 +/– 0.04 % 0.38 +/– 0.04 % 0.59 +/– 0.04 %
S3 Henyey-Greenstein, gHG = 0.5, ωcloud = 1 0.15 +/– 0.04 % 0.26 +/– 0.05 % 0.47 +/– 0.05 %
S4 Henyey-Greenstein, gHG = 0.9, ωcloud = 1 0.06 +/– 0.08 % 0.08 +/– 0.09 % 0.19 +/– 0.10 %
S5 Mie, MgSiO3, reff = 1.0μm, veff = 0.1 0.07 +/– 0.03 % 0.07 +/– 0.04 % 0.16 +/– 0.04 %
S6 DHSc, MgSiO3, reff = 1.0μm, veff = 0.1, fDHS = 0.8d 0.06 +/– 0.03 % 0.14 +/– 0.04 % 0.21 +/– 0.04 %

Notes.

(a)

Complex refractive indices obtained from Dorschner et al. (1995).

(b)

Central wavelength of the SPHERE/IRDIS H3 filter which is sensitive to methane absorption. For the other models, we used the central wavelength of the SPHERE/IRDIS H2 continuum filter, λ = 1.59μm.

(c)

Irregularly shaped particle properties are approximated with a distribution on hollow spheres (DHS; Min et al. 2005).

(d)

The maximum volume void fraction for the DHS.

(e)

Integrated degree of polarization (see Eq. (2)) and 5σ Monte Carlo uncertainty (see Eq. (3)).

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