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CryoSat News

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Published by EOWeb on Mon 04 of Sep. 2017

CryoSat NetCDF Ocean Products release schedule

Following the publication of some intermediary data samples, CryoSat scientific users are informed that ESA is progressing towards the operational release of the new Ocean Products in NetCDF format.

After the analysis of the test data, it has been decided to apply some minor changes to a few variable attributes (e.g. names). Consequently, it is now envisaged that the initial operational products will be available by October 2017.

It is further noted that the availability of the NOP production may be further delayed for operational reasons.

Published by EOWeb on Mon 07 of Aug. 2017

Sample NetCDF Ocean Products available to users

CryoSat users are informed that a sample of the new CryoSat Ocean Products in NetCDF is now available to download here. This test data has been processed with the new Baseline-C Ocean Processors, which now generate three classes of products, each with different delivery latencies:

  • Near-Real Time Ocean Products (NOP) – delivered 3 hours after acquisition
  • Intermediate Ocean Products (IOP) – delivered 48 hours after acquisition
  • Geophysical Ocean Products (GOP) – delivered 30 days after acquisition

These products are further classified according to the data acquisition mode (LRM, SAR and SARIn). For more information on the new NetCDF Ocean Products, please refer to the updated Ocean Product Format Specification document.

Whilst the data sample provided currently includes only L1B and L2 IOP data, users should note that the format of these products is representative of the NOP and GOP data; the processing of these products is the same and the only difference lies in the use of different input auxiliary files.

Please note that these data samples are intended only for the purpose of becoming familiar with the format of the new CryoSat Ocean Products and are not fully representative of the quality that will be provided when this data is opened to the user community.

Published by EOWeb on Fri 04 of Aug. 2017

Product Quality Status Document for CryoSat Ice Products updated

CryoSat users are informed that an updated version of the CryoSat Product Quality Status Document is now available.

This document provides CryoSat users with details of all the known anomalies that are being tracked, that could affect the quality of the CryoSat Ice Level-1 and Level-2 data products operationally generated by the Ice Processor and distributed by ESA.

In addition to this, the details of all the Ice Baseline-D (Q2 2018) evolutions, which have been planned for CryoSat Ice products, as well as some evolutions proposed for future Baseline-E, are also provided.

Published by EOWeb on Thu 03 of Aug. 2017

Upgraded CryoSat NetCDF ocean products releasing soon

CryoSat users are informed that we are at the final stage of the implementation, prior to the release of the new Baseline C CryoSat ocean products for the scientific community.

Our verification teams are currently carrying out extensive checks on the quality and format of the new products generated by the CryoSat Ocean Processor (COP). Once these checks have been successfully completed, the Baseline C Ocean Products will be opened to the whole user community. It is envisaged that initial operational products will be available by September 2017.

In terms of the product content, the main changes involved in the Ocean Baseline C are related to the addition of native SAR/SARIN-mode data over the relevant ocean regions in the geographical mode mask, and a number of new parameters, including updated geophysical corrections.

All evolutions of the COP chain have been considered in parallel of the format change to NetCDF ensuring a better harmonization with other ocean-oriented Altimetry missions. An almost consolidated version of the Product Format Specification document for the new ocean products is now available.

A small test data and additional documentations will be provided to the users soon, in order to test and configure data tools and routines in preparation for the release of the final data scheduled for September.

Published by EOWeb on Wed 05 of July 2017

Giant iceberg in the making

All eyes are on Antarctica's Larsen C ice shelf as a deep crack continues to cut across the ice, leaving a huge chunk clinging on. When it eventually gives way, one of the largest icebergs on record will be set adrift. Even before the inevitable happens, ESA's CryoSat mission can reveal some of the future berg's vital statistics.

Monitored by the Copernicus Sentinel-1 radar pair, the crack in the ice is now around 200 km long, leaving just 5 km between the end of the fissure and the ocean.

While we wait for Sentinel-1 to tell us when this 6600 sq km iceberg is spawned, CryoSat can reveal what the berg's measurements will be.

Read more

Published by EOWeb on Fri 16 of June 2017

New CryoSat CUT ROEF file available

CryoSat CUT scientific users are informed that a new version of the CUT ROEF file is available for download.

From the CUT application, under the menu bar, users may select "Help > Check for ROEF updates" and then follow the instructions. Expert users are also informed that the new ground tracks have been uploaded to the Cal-Val FTP server.

Published by EOWeb on Thu 08 of June 2017

CryoSat Antarctica DEM 1.2 now available online

The CryoSat Antarctica DEM described in this recent publication is now freely available for download. The file also contains the Product User Guide.

The DEM was created by CPOM and it is composed of approximately 250 million measurements taken by CryoSat between 2010 and 2016. It is now the most comprehensive picture of Antarctic ice elevation currently available and offers a wide range of applications - showing the surface of Antarctica in such detail means that it can be used for anything from planning fieldwork to modelling the ice sheet.

It also allows scientists to distinguish between changes in topography and ice motion when working with other satellite measurements, such as those used to calculate the balance between how much the ice sheet is gaining by accumulating snow and how much it is losing through melting and creating icebergs.

Users may freely use the DEM provided they give acknowledgement.

Published by EOWeb on Mon 05 of June 2017

CryoSat SIRAL resumes routine operations

We are glad to inform all CryoSat users that the SIRAL anomaly announced on 02 June 2017 was successfully resolved.

The routine instrument planning resumed on 03 June 2017 at around 09:30 UTC with the first LRM segment. Analyses confirm that the instrument is performing nominally.

Published by EOWeb on Fri 02 of June 2017

CryoSat SIRAL anomaly on 02 June 2017

CryoSat scientific users are informed that the SIRAL instrument is in stand-by mode from 03:54 UTC this morning due to an anomaly which is currently under investigation.
Published by EOWeb on Thu 25 of May 2017

New CryoSat dataset with corrected mispointing angle for aberration of light available to users

A new dataset is now available to CryoSat users which contains Star Tracker mispointing angles corrected for the aberration of light. This dataset is particularly important for those users who are processing the data in Swath Mode. It essentially has no major impact on other applications.

It is noted that corrected values of the mispointing angles corrected for the aberration of light will be incorporated in the next release of the ice products called Baseline D, planned to be released next year.

Users can download the Technical Note, which describes this dataset. The yearly datasets can be downloaded from the these links: 2011, 2012, and 2013. Each dataset is approximately 500MB.

The missing years will be added to the current datasets once they have been processed and shall become available on the datasets page.

For further information, please do not hesitate to contact eohelp

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