ICON Grid & EXTPAR Web Interface

Zonda is a web interface that facilitates generating EXTPAR data on ICON triangular grids for reasearch and on-demand simulations.

The tool has been developed as a joint project by C2SM, MeteoSwiss and DWD. Zonda has been released in May 2025 and is publicly available.

For further information, please consider the official Zonda Docs .