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Zarr Overview:

Zarr is a relatively new cloud-based data format specifically for improving access to N-Dimensional arrays. It is an effective way to store large N-dimensional data in the cloud and access the data in predefined chunks.  Zarr can be viewed as the cloud based version of HDF5/NetCDF files as it follows a similar data model.  Zarr does not come in a single file as NetCDF or HDF5 does but as a directory with chunks of data in compressed binary files and metadata describing the binary content in external JSON files.

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Zarr is a generic data format for Scientific Array Data.  Groups have found ways to store spatial metadata within the existing structure, however since this is not a single standardized method, users would have to create custom tools to retrieve those fields.  There is a GeoZarr Specification to provide a geospatial extension to the Zarr data format. GeoZarr can store multidimensional georeferenced earth observation data.

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