In common with the operations schema of Sentinels 1,2& 3, the operations of the data dissemination for Sentinel-5P will soon implement the roll-out of the oldest L2 data from the immediate access storage and activation of the interfaces to allow to asynchronously restore access to historic data when needed.
The Sentinel-5P dedicated hub will continue to provide the access to all Sentinel-5P data: the catalogue will continue to publish all data, the discovery and download interfaces (both the graphical user interface and API) will provide additional status information to indicate whether the products are online or offline.
Access to the product URL for data that are no longer available online will automatically trigger the retrieval of the data, the actual download may be initiated once the data are restored (within minutes to hours). Full details are available in the User Guides.
Roll-out of the data will start with the oldest Sentinel-5P L2 OFFL data and will proceed to the other Sentinel product types according to the production volumes and usage patterns.
At least the latest six months of Sentinel-5P data will be kept online at all times. The retention period for the various product types will be tuned according to the usage patterns to ensure efficient access to the most recent and frequently downloaded data, the precise retention period (always greater than one year) is subject to change according to the operational experience.