The method for accessing CryoSat Quaternions Products will change soon. The Quaternions Products, generated by the Ice Star Tracker processor are currently available to download from the cryo-proqua account on the CryoSat CalVal FTP server. This account will soon be disabled and replaced with personal FTPS accounts, as part of a project aimed at migrating all functional FTP accounts on the CalVal server to more secure personal FTPS accounts. This change will be implemented on 26 February 2024.

The quaternions products will then be accessible from the CryoSat CalVal FTPS server via an FTPS client, and will be located in the “AUX_PROQUA” folder. Users wishing to access the quaternions products should request a personal account to be created by emailing the CryoSat Mission Geophysicist, Dr. Alessandro Di Bella (alessandro.di.bella@ext.esa.int).

Full updated instructions to access the quaternion products can be found on the CryoSat products page. More information on the products can be found in the Algorithm Description and Product Format Specification documents.