# ESMValCore

> ESMValCore is the core of ESMValTool: it finds, fixes, and preprocesses Earth system model data according to a YAML recipe and runs diagnostic scripts.


2026, ESMValTool Development Team

## Pages in this subsection

- [Reference guides](index.html.md): This is work in progress as we are currently working on adding more
- [Variables and CMOR Tables](cmor_tables.html.md): ESMValCore has been designed to facilitate working with
- [Facets](facets.html.md): A facet is a key-value pair that describes a certain property of a dataset and

## Optional

- [Top-level llms.txt](../llms.txt): Complete documentation index.