THREDDS Data Server & OpenDAP Introduction

The THREDDS Data Server (TDS) is a web server that provides metadata and data access for scientific datasets using OGC standards (WMS, WCS) and OpenDAP protocols.

Connecting to a THREDDS Catalog

1. Open the THREDDS Catalog Browser or load a THREDDS catalog URL (e.g. https://thredds.met.no/thredds/catalog.xml).
2. The catalog tree parses the remote XML structure into an Eclipse EMF CatalogType model.
3. Browse folders and datasets down to individual data products.

Accessing Remote OpenDAP Datasets

Capella Datascience allows you to interact with remote datasets directly over OpenDAP without downloading whole multi-gigabyte files:

• Select a dataset with an OpenDAP endpoint (dodsC or http://...).
• Double-click any variable to fetch its metadata and coordinate structure.
• Only the requested 2D slices are transmitted across the network on-demand when plotting or slicing extra dimensions.