feat: add MetOp IASI Level 1C infrared brightness temperature data source

CHANGELOG.md

@@ -20,6 +20,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Added AMSU-A (channels 1–14) and AVHRR channel variables to `E2STUDIO_VOCAB`
 - Added JPSS ATMS Level 1 BUFR brightness-temperature data source (`JPSS_ATMS`)
 - Added `JPSSATMSLexicon` for ATMS variable mappings
+- Added MetOp IASI Level 1C infrared brightness temperature data source (`MetOpIASI`)
+- Added `MetOpIASILexicon` for IASI variable mappings (8461 spectral channels)
 
 ### Changed
 

CLAUDE.md

@@ -31,6 +31,17 @@ file(s) before writing or reviewing code:
 - **Formatting** — black; run `/format` or `make format`.
 - **Linting** — ruff + mypy; run `/lint` or `make lint` before opening a PR.
 
+## Skills
+
+Custom skills live in `.claude/skills/`. Invoke the relevant skill before starting
+a matching task:
+
+| Skill | Purpose |
+|---|---|
+| `create-data-source` | Create a new data source wrapper |
+| `create-prognostic-wrapper` | Create a new prognostic model (px) wrapper |
+| `validate-data-source` | Validate a newly implemented data source |
+
 ## Custom Commands
 
 Use these slash commands (defined in `.claude/commands/`) to run common tasks:

docs/modules/datasources_dataframe.rst

@@ -24,6 +24,7 @@ Data sources that provide tabular data as DataFrames.
       data.JPSS_ATMS
       data.MetOpAMSUA
       data.MetOpAVHRR
+      data.MetOpIASI
       data.MetOpMHS
       data.RandomDataFrame
       data.UFSObsConv

earth2studio/data/__init__.py

@@ -32,6 +32,7 @@
 from .jpss_atms import JPSS_ATMS
 from .metop_amsua import MetOpAMSUA
 from .metop_avhrr import MetOpAVHRR
+from .metop_iasi import MetOpIASI
 from .metop_mhs import MetOpMHS
 from .mrms import MRMS
 from .ncar import NCAR_ERA5