Category:Atmospheric Properties
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| − | + | Several of KRC's default atmospheric parameters might not be optimized for most users: | |
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| + | TAURAT: Ratio of thermal to visible opacity of dust | ||
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| + | DUSTA: Single scattering albedo of dust | ||
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| + | ARC2: Henyey-Greenstein asymmetry factor | ||
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| + | KRC assumes broadband atmospheric opacities. To estimate TAURAT, assuming: | ||
| + | 1. VIS/9μm dust opacity ratio is ~2:1 (M. Smith personal communication); | ||
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| + | 2. 9μm to broadband TIR ratio is 2.5:1 (ratio of maximum and average values of the dust opacity spectrum from Bandfield and Smith, [2003], Figure 3); | ||
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| + | THEN: | ||
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| + | TAURAT ≈ 0.22 (J. Bandfield). | ||
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| + | Values for DUSTA and ARC2 go together, and should not be changed without the other (see the table below). To stick with J. Bandfield’s values, a user can work with: | ||
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| + | DUSTA = 0.90 | ||
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| + | ARC2 = 0.50 | ||
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| + | Other values reported in this table are acceptable, except for “KRC Default”. | ||
Revision as of 10:41, 8 November 2016
Several of KRC's default atmospheric parameters might not be optimized for most users:
TAURAT: Ratio of thermal to visible opacity of dust
DUSTA: Single scattering albedo of dust
ARC2: Henyey-Greenstein asymmetry factor
KRC assumes broadband atmospheric opacities. To estimate TAURAT, assuming: 1. VIS/9μm dust opacity ratio is ~2:1 (M. Smith personal communication);
2. 9μm to broadband TIR ratio is 2.5:1 (ratio of maximum and average values of the dust opacity spectrum from Bandfield and Smith, [2003], Figure 3);
THEN:
TAURAT ≈ 0.22 (J. Bandfield).
Values for DUSTA and ARC2 go together, and should not be changed without the other (see the table below). To stick with J. Bandfield’s values, a user can work with:
DUSTA = 0.90
ARC2 = 0.50
Other values reported in this table are acceptable, except for “KRC Default”.
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