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The example of dictionary used to translate MARS like to CDS beautified requests for S2S dataset is ecds-tigges2s.yaml
Registration
All users must register with ECDS to get the access to datasets using CDS-API. Although the new ECDS portal shares similar infrastructure as the Copernicus Climate Data Store, the existing user tokens (API keys) cannot be reused in ECDS.
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(*) The example of dictionary used to translate MARS like to CDS beautified requests for TIGGE dataset is ecds-tigges2s.yaml