There are two main ways how to get UERRA data:

1. via the dedicated UERRA data portal connected to ECMWF's MARS archive (see below)
2. via Copernicus Data Store (CDS)
   • the same data is stored in different archive with different interface to access them

Access via the dedicated UERRA data portal

• Please refer always also to UERRA documentation in Copernicus Data Store (CDS) 
• Please read carefully instructions UERRA retrieval efficiency before any major data retrievals.
• For larger samples retrievals the ECMWF's Web-API should be used.

Public users

Dedicated UERRA data portal:

http://apps.ecmwf.int/datasets/data/uerra

• intended mainly for data discovery and smaller sample retrievals
• simple registration is required

ECMWF users

Full ECMWF MARS access is required to access MARS catalogue directly using the links below.

Links are visible only to authenticated users (which does not mean necessarily the full access to MARS.. )