Q_rad explorer — tau / lambda binning

Model atmosphere (binning + radiative transfer run on this)

τ-group edges (−log₁₀τ_Ros, increasing)

N edges → N−1 tau groups. e.g. -0.63, 0.35, 1.23, 2.89, 7

Optimize τ edges (greedy high-overlap)

to τ groups

Grows to N optimally-placed τ groups over the whole λ range (keeps the outer window), then fills the box above and recomputes.

λ cell edges (log₁₀ λ/Å, increasing)

2 edges = one cell (no wavelength split). Add an interior edge (e.g. 3.8) to split.

Split which τ-groups along λ?

Only matters with >1 λ cell. Off = that group stays one band over all λ.

Optimize for Q_rad (direct — slow)

Minimizes the Q_rad residual directly (full RTE per step, ~2.5 s). Warm-starts from the current binning and loads the result when done.cancel
per-group λ: each τ group gets its own wavelength split (its own cut, or none) — replaces the shared cut + flags.

bands	—
(λ,τ) groups	—
rms residual	—
max \|ΔQ/ρ\|	—
∫Q error	—
assigned sub-bins	—
compute time	—

Writes the current binning's C-format kappa table (`kappa_<…>.dat`). After an optimize run this is the optimized table.