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FAQ
Have you noticed some missing corrections inside the CryoSat Level-1 or Level-2 ice and ocean products?
Have a look at the Daily Performance Quality Reports for the relevant date and product type. These reports are generated when an issue is identified in the products.
Have you noticed some flags in CryoSat Level-1 or Level-2 ice and ocean data products and want to understand what they mean?
The most useful documents to find information about the CryoSat products flags are the relevant Product Handbooks and Product Format Specifications.
When plotting CryoSat Level-2 SARIn products, why are the measurements often scattered off to the side of the ground track?
The purpose of the CryoSat SARIn mode is to directly determine the across-track angle offset of the returning echo (by using the phase difference between the 2 antennas).
How are the Dry and Wet Tropospheric Corrections computed in CryoSat Level-2 products?
The Dry Tropospheric Correction is not received via a direct Auxiliary Data File (ADF) input.
Are freeboard values available in CryoSat Level-2 products?
Calculation of freeboard requires the accurate computation of a valid Mean Sea Surface (MSS) which in turn requires data measurements from at least two years of the CryoSat mission.
What is the value of the speed of light used in CryoSat processing?
299,792,458 metres per second.
What is the range bin sampling of CryoSat Level-1B products for LRM, SAR and SARIn modes?
The range bin sampling for LRM (Low Resolution Mode) is 0.4684 metres. The range bin sampling is 0.2342 metres for SAR/SARIn.
What geophysical corrections have ben applied to CryoSat Level-1 and Level-2 data products?
Geophysical corrections are used to correct altimeter measurements from different perturbations due to the environment and ensure the highest precision output data.
How is sea surface height computed?
Altimetry measures the range, which is the distance between the satellite and the sampled surface.
How can I learn more about known anomalies with CryoSat Level-1 or Level-2 ice and ocean data?
Please check the Product Status documents, which provide a description of all the known anomalies affecting CryoSat Ice and Ocean products.
Where can I find an overview of monthly data quality for CryoSat ice products?
Cyclic performance reports covering L1B and L2 ice products are published every month.
How are the directories on the CryoSat Science Server organised?
Data is sorted into folders according to product type, and then subsequently by year and month.
How do I find technical information about CryoSat EOLIS or CryoTEMPO product contents or format?
The most useful documents to find information about the CryoSat CryoTEMPO and EOLIS product contents and formats are the relevant Product Handbooks and Algorithm Theoretical Basis Documents (ATBDs).
How do I find technical information about CryoSat Level-1 and Level-2 ice and ocean product contents or format?
The most useful documents to find information about the CryoSat ice and ocean product contents and formats are the relevant Product Handbooks and Product Format Specifications.
What are the main differences between the current CryoSat IPF Baseline and the previous one?
Find documents which describe the main evolutions implemented in the current operational CryoSat Instrument Processing Facilities (IPF)
When searching for products in CUT, why are the products outside my Area of Interest?
Please check that you are using the most up-to-date version of the CryoSat User Tool (CUT), which is compatible with the current operational Ice and Ocean products.
Which software tools can I use for CryoSat?
Find a list of software tools which support the CryoSat mission, providing services such as data discovery, visualisation, processing, and analysis.
What is the current delay of CryoSt data delivery compared to acquisition?
CryoSat NRT (Near Real Time) products and NOP (NRT Ocean Products) are generated as soon as possible (2-3 hours) after acquisition using the DORIS Navigator Orbit.
Where can I find the latest CryoSat operational news?
CryoSat operational news is regularly posted on this website and follow us @esa_cryosat on X.
What are the current CryoSat operational processor versions?
For information about the current operational processor versions, the dates they were installed and the changes that were implemented please visit the Instrument Processing Facilities webpage.