# 📐 L2 Spec — Ocean Color Remote Sensing (chlorophyll / CDOM / TSM) Mismatch-Only Spec
**ID:** `L2-110-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-110`](/artifact/l1/L1-110)
> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.5 · **Delta tier:** 5
> **⛓ On-chain block:** 41554202
---
## 1. Domain Ω
**Type:** `range`
| Parameter | Unit | Range |
|---|---|---|
| H | px | 256 – 8192 |
| W | px | 256 – 8192 |
| Gsd m | m | 10 – 5000 |
| Glint | — | 0.0 – 0.3 |
| Snr db | dB | 15.0 – 45.0 |
| N bands | bands | 4 – 20 |
| Whitecaps | — | 0.0 – 0.2 |
| Bottom reflectance | — | 0.0 – 0.5 |
| Atmospheric aerosol | — | 0.0 – 0.5 |
## 2. Tolerance (ε)
**Type:** `fn`
```
17.0 + 0.2 * SNR_dB - 8.0 * atmospheric_aerosol - 10.0 * glint - 6.0 * bottom_reflectance
```
## 3. Difficulty
| Property | Value |
|---|---|
| Difficulty score | 0.5 |
| Delta tier | 5 |
## 4. Fingerprint
`24510e6a7084ed5d5116f32c9f8e681d98500ca0cd383b382854fbd55bb9a45d`
## 5. On-chain Registration
- **Chain hash:** `0xc378c6ad4956f87ba04eddd06a916033cb44738ff138006b4e5cea52962b9e8f`
- **Chain tx hash:** `0xf3876ced166a83f7eed9dafcfb631098872db2c24d813c4ef64b944fa1714796`
- **Chain block:** `41554202`
---
## File Mapping
This bundle consists of: `L2-110-001.md`, `L2-110-001.json`.
| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-110-001.md` | Source of truth — edit this | Human or LLM |
| `L2-110-001.json` | Structured metadata for the registry | LLM regenerates from the sections above |
**Prompt for your LLM after editing this Markdown:**
> Read the attached Markdown. Regenerate the sibling `.json` so every field matches.
> Preserve the schema documented in the rows above.
> Output each file in its own fenced code block tagged with the filename.
> Output only the JSON object.
_This Markdown was auto-synthesized from the catalog row for `L2-110-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._