Optics / tool

Water, size & light

Explore how equal water content can produce very different extinction.

Calculator and method

YOUR INPUTS

Numeric inputs appear in a shared link. CSV data are kept out of the link.

Model calculation · not experimental data
β ≈ 3 LWC / (2 ρw rₑ) Qext ≈ 2
MODEL & BOUNDARIES

Know what the result means.

Geometric-optics approximation for spherical water droplets, with effective radius rather than arithmetic mean radius. Hydrated submicron particles, composition and wavelength can break this approximation. Use a qualified scattering model for exact optical closure.

Version 1.0 · SI quantities are used internally, with displayed input units converted explicitly. Retain your assumptions with any exported result.

METHOD REFERENCES

Follow the definitions.

  1. Neuberger et al. · Hydrated aerosol and fog
  2. Spiegel et al. · Fog droplet measurement uncertainty

References support the physical relationships or measurement context. They do not validate any proposed weatherhill hardware.

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