# ICOS zarr proxy

> Atmosphere / ecosystem / ocean environmental datasets served as Zarr v2 over HTTP. Each store is self-describing and mints a data passport on access.

## Start here
- Service discovery (JSON, lists stores + per-store agent_guide URLs): https://zarr-rc.fs4vm.icos-cp.eu/
- API contract: https://zarr-rc.fs4vm.icos-cp.eu/openapi.json
- REST query (bbox/time/QC filter → NDJSON or Arrow, and csv and ndjson for clients without pyarrow): https://zarr-rc.fs4vm.icos-cp.eu/query
- Variable catalogue: https://zarr-rc.fs4vm.icos-cp.eu/variables

## Datasets
- icos-atm-meteo.zarr: open `xarray.open_zarr('https://zarr-rc.fs4vm.icos-cp.eu/icos-atm-meteo.zarr', group='meteo', consolidated=True)` · guide https://zarr-rc.fs4vm.icos-cp.eu/icos-atm-meteo.zarr/agent_guide
- icos-eco-nrt.zarr: open `xarray.open_zarr('https://zarr-rc.fs4vm.icos-cp.eu/icos-eco-nrt.zarr', consolidated=True)` · no cross-entity view — open a top-level entity group · guide https://zarr-rc.fs4vm.icos-cp.eu/icos-eco-nrt.zarr/agent_guide
- icos-obspack.zarr: open `xarray.open_zarr('https://zarr-rc.fs4vm.icos-cp.eu/icos-obspack.zarr', group='co2', consolidated=True)` · views: co2, ch4, n2o, co, rn, 14co2 · guide https://zarr-rc.fs4vm.icos-cp.eu/icos-obspack.zarr/agent_guide
- noaa-obspack.zarr: open `xarray.open_zarr('https://zarr-rc.fs4vm.icos-cp.eu/noaa-obspack.zarr', consolidated=True)` · no cross-entity view — open a top-level entity group · guide https://zarr-rc.fs4vm.icos-cp.eu/noaa-obspack.zarr/agent_guide
- socat-gridded.zarr: open `xarray.open_zarr('https://zarr-rc.fs4vm.icos-cp.eu/socat-gridded.zarr', consolidated=True)` · guide https://zarr-rc.fs4vm.icos-cp.eu/socat-gridded.zarr/agent_guide