Quality Status of the CryoSat Data Products

Erica Webb (Telespazio VEGA UK Ltd, United Kingdom)

CoAuthors

Amanda Hall (Telespazio VEGA UK Ltd, UK); Ben Wright (Telespazio VEGA UK Ltd, UK); Marco Meloni (SERCO c/o ESA/ESRIN, Italy); Jerome Bouffard (ESA/ESRIN, Italy); Tommaso Parrinello (ESA/ESRIN, Italy); Steven Baker (UCL/MSSL, UK); David Brockley (UCL/MSSL, UK)

Event: 2019 Ocean Surface Topography Science Team Meeting

Session: Science IV: Altimetry for Cryosphere and Hydrology

Presentation type: Type Poster

Launched in 2010, the European Space Agency’s (ESA) polar-orbiting CryoSat satellite was specifically designed to measure changes in the thickness of polar sea ice and the elevation of the ice sheets and mountain glaciers. Beyond the primary mission objectives, CryoSat is also valuable source of data for the oceanographic community and CryoSat’s sophisticated SAR Interferometric Radar Altimeter can measure high-resolution geophysical parameters from the open ocean to the coast.

CryoSat data is processed operationally using two independent processing chains: Ice and Ocean. In order to ensure that the CryoSat products meet the highest data quality and performance standards, the CryoSat Instrument Processing Facilities (IPFs) are periodically updated. Processing algorithms are improved based on feedback and recommendations from Quality Control (QC) activities, Calibration and Validation campaigns, the CryoSat Expert Support Laboratory (ESL), and the Scientific Community.

Since May 2019, the CryoSat ice products are generated with Baseline-D, which represented a major processor upgrade and implemented several improvements, including the optimisation of freeboard computation in SARIn mode, improvements to sea ice and land ice retracking and the migration from Earth Explorer Format to NetCDF.

The CryoSat Ocean products are also generated in NetCDF, following a processor upgrade in November 2017 (Baseline-C). Improvements implemented in this new Baseline include the generation of ocean products for all data acquisition modes, therefore providing complete data coverage for ocean users. This upgrade also implemented innovative algorithms, refined existing ones and added new parameters and corrections to the products.

The CryoSat ice and ocean products are routinely monitored as part of QC activities by the ESA/ESRIN Sensor Performance, Products and Algorithms (SPPA) office with the support of the Instrument Data quality Evaluation and Analysis Service (IDEAS+) led by Telespazio VEGA UK. These new processor updates are expected to bring significant improvements to the quality of CryoSat ice and ocean products, in turn having a positive impact on the scientific exploitation of CryoSat measurements over all surface types.

This poster provides an overview of the CryoSat data quality status, covering all QC activities performed by the Telespazio VEGA UK led IDEAS+ consortium, as well as the evolutions and improvements implemented in the latest upgrades to the ice and ocean processors.

 

Poster show times:

Room Start Date End Date
The Gallery Tue, Oct 22 2019,16:15 Tue, Oct 22 2019,18:00
The Gallery Thu, Oct 24 2019,14:00 Thu, Oct 24 2019,15:45
Erica Webb
Telespazio VEGA UK Ltd
United Kingdom
erica.webb@telespazio.com