ri_smoke
Constants
🔥 SMOKE (Brown Carbon / Organic aerosol): complex refractive index m = n + i k, wavelength in nm. Assumptions: dry organic aerosol ("brown carbon"), ~300 K, bulk-effective constants; morphology not modeled. Purpose: radiometrically useful across 200–20,000 nm for graphics and physics; linear interpolation via ParameterLookupTable.
Spectral behavior encoded (representative):
- UV (200–380 nm): strong absorption (large k), n slightly higher.
- Visible (400–700 nm): moderate dispersion, weak-to-moderate absorption decreasing toward red (brownness).
- NIR/SWIR (0.75–2.5 µm): generally weak k with small overtone bumps near 1.4–2.0 µm.
- Mid-IR (2.7–5 µm): strong organic stretch complex near 3.2–3.5 µm (elevated k).
- LWIR (6–12 µm): carbonyl/other organic modes around ~6 µm and bands near 6.8–7.3 µm; modest tail beyond.
Composite guidance/sources: Kirchstetter et al. (2004) AAE for brown carbon; Hoffer et al. (2006); Sumlin et al. (2017); generic organic/polymer optics (Querry compendium) for MIR/LWIR band shapes. Values are smooth/representative for modeling; species- and burn-condition variability is not captured.
Functions
💨 SMOKE (Brown Carbon / Organic aerosol)
SMOKE_REFRACTION_INDEX_LUT
🔥 SMOKE (Brown Carbon / Organic aerosol): complex refractive index m = n + i k, wavelength in nm. Assumptions: dry organic aerosol ("brown carbon"), ~300 K, bulk-effective constants; morphology not modeled. Purpose: radiometrically useful across 200–20,000 nm for graphics and physics; linear interpolation via ParameterLookupTable.
Spectral behavior encoded (representative):
- UV (200–380 nm): strong absorption (large k), n slightly higher.
- Visible (400–700 nm): moderate dispersion, weak-to-moderate absorption decreasing toward red (brownness).
- NIR/SWIR (0.75–2.5 µm): generally weak k with small overtone bumps near 1.4–2.0 µm.
- Mid-IR (2.7–5 µm): strong organic stretch complex near 3.2–3.5 µm (elevated k).
- LWIR (6–12 µm): carbonyl/other organic modes around ~6 µm and bands near 6.8–7.3 µm; modest tail beyond.
Composite guidance/sources: Kirchstetter et al. (2004) AAE for brown carbon; Hoffer et al. (2006); Sumlin et al. (2017); generic organic/polymer optics (Querry compendium) for MIR/LWIR band shapes. Values are smooth/representative for modeling; species- and burn-condition variability is not captured.
Kind: global constant
ri_smoke(result, wavelength_nm)
💨 SMOKE (Brown Carbon / Organic aerosol)
Kind: global function
| Param | Type | Description |
|---|---|---|
| result | Array.<number> | complex number, refraction index |
| wavelength_nm | number | in nanometers |