Blog
- June 26, 2026
Computing the El Niño index from ERA5 with SQL
A SQL walkthrough of the Oceanic Niño Index (ONI) computed in place over ARCO-ERA5 with zarr-datafusion — and how it validates against NOAA's official record.
tutorial climate zarr-datafusion - June 1, 2026
Why SQL on Zarr? The architecture behind zarr-datafusion
An origin-story and architecture walkthrough of zarr-datafusion — why we built a SQL engine for Zarr-native array data.
architecture zarr-datafusion - May 15, 2026
What it costs to copy the planet's data
A business framing of the ETL/duplication tax — egress, redundant storage, and stale copies — and how 'query in place' avoids it.
business cost