Water as Spectrum — Prototype

RADIATIVE PATH

From illumination to idealized water-leaving reflectance.

Atmosphere is conceptual in V1. Quantitative output begins with water IOPs.

WATER COLUMN

Absorption and backscattering are inherent optical properties. They determine how the in-water light field changes before light leaves the surface.

SYNCHRONIZED SPECTRA

Move over a plot, click, drag, or use ← →. Hold Shift for 10 nm.

a(λ)ABSORPTION · m⁻¹—AUTO Y

bb(λ)BACKSCATTERING · m⁻¹—AUTO Y

Rrs(λ)IDEALIZED ABOVE-WATER · sr⁻¹—AUTO Y

REFERENCE STATES Pedagogical, not canonical classes

WATER STATE Model inputs

CHLOROPHYLL1.00 mg m⁻³ Chl → aph(λ) → a(λ) CDOM0.050 m⁻¹ ag(440) → ag(λ) → a(λ)

PARTICLESAbsorption and backscatter remain independent

NAP ABSORPTION0.020 m⁻¹ aNAP(443) → aNAP(λ) PARTICLE BACKSCATTER0.0020 m⁻¹ bbp(443) → bbp(λ)

WAVELENGTH PROBE 443 nm

a— bb— Rrs—

COMPONENT BUDGET 443 nm

ABSORPTION

BACKSCATTERING

CAUSAL READOUTLatest intervention

REFERENCE STATE → IOPs → u(λ) → rrs(λ) → Rrs(λ)