Dates in ERA5 queries

I have been using this to specify a date range:

‘date’: ‘2021-11-01/2021-11-30’

Is there a good reason to using the separate year, month and day specifications instead?

From a user-perspective, I don’t believe so. As a matter of fact, I believe this is the best way of querying data.

Unfortunately, with the constantly changing API specifications, it seems that just last week, support for the “date” argument has been disabled for some data sets. While ERA5 data can still be queried with the date argument, CERRA data cannot.

Beyond frustrating that a query field as crucial as temporal limits of the queried data is not being maintained homogenously across data products.

It would be incredibly convenient if the date range format worked consistently across all CDS datasets!