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CryoSat News

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Published by EOWeb on Thu 14 of June 2018

Antarctica hikes up sea level

In a major collaborative effort, scientists from around the world have used information from satellites to reveal that ice melting in Antarctica has not only raised sea levels by 7.6 mm since 1992, but, critically, almost half of this rise has occurred in the last five years.

Andrew Shepherd from the University of Leeds in the UK and Erik Ivins from NASA’s Jet Propulsion Laboratory led a group of 84 scientists from 44 international organisations in research that has resulted in the most complete picture to date of how Antarctica’s ice sheet is changing.

Their research, published in Nature, reveals that prior to 2012, when the last such study was carried out, Antarctica was losing 76 billion tonnes of ice a year. This was causing sea levels to rise at a rate of 0.2 mm a year.

Since then, however, Antarctica has been losing ice three times as fast.

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Published by EOWeb on Thu 31 of May 2018

CryoSat - CUT version 4.0.1 released

A new version of the CryoSat User Tool (CUT vs 4.0.1) has been released. Users can download the tool now and find further information on the CryoSat User Tool web page.

The CUT is a Windows stand-alone application for displaying and downloading CryoSat products from remote FTP servers or from local directories.

This new version of CUT will fix a problem with updating of the index file when using CUT ‘search' feature.

Published by EOWeb on Fri 11 of May 2018

New view of Antarctica in 3D

Thanks to ESA's CryoSat mission, a new map of Antarctica provides the most accurate 3D view ever of the continent's vast ice sheet and floating ice shelves.

This latest digital elevation model, which is available for download, is a result of research published recently in The Cryosphere. The model replaces the version published in March 2017.

CryoSat's radar altimeter detects tiny variations in the height of the ice across the entire continent, including on the steeper continental margins where the vast majority of ice losses occur.

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Published by EOWeb on Thu 10 of May 2018

New CryoSat ground tracks available

New ground tracks from CryoSat for the period 7 July 2018 - 11 July 2019 are now available for download.
Published by EOWeb on Fri 04 of May 2018

Cryosat Baseline B data removal

Cryosat scientific users are informed that after 6 months from the start of the Ocean Baseline C production, Baseline B data will be removed from the Science Server as early as Monday, 14 May 2018.
 
After the removal of the Ocean Baseline B dataset it will only be available in batches and by request.

Published by EOWeb on Thu 03 of May 2018

CryoSat Scientific Expert Meeting: Presentations and Summary Report

The CryoSat Scientific Expert Meeting (CSEM) was held at ESA/ESRIN on 07 and 08 November 2017. The CSEM involved participants from more than 20 operational and research institutes, including both altimetry experts and multi-thematic scientists.
 
The Meeting was structured around three main thematic sessions (Sea Ice, Land ice, Ocean and Inland), with presentations and large time slots dedicated to informal brainstorming.
 
Thanks to the participants' active contributions, the CSEM was important in supporting ESA's goal to define a roadmap for future CryoSat-based products, targeting a wider community of scientific end–users (e.g. modellers, Climate/Operational services). In particular, the CSEM participants fully endorsed the new ESA concept of CRYO-TEMPO (CRYOsat ThEMatic PrOducts), which shall be higher than Level-2 products, user-friendly, simple and reflect the most recent scientific outcomes.
 
The CSEM participants also provided key recommendations not only for improvements of the core CryoSat Level-1/Level-2 products but also for a better multi-mission harmonization and potential changes in the CryoSat mode mask and orbit.
 
These points and much more are addressed in the CSEM presentations and the Summary and Recommendation Report which are now available to download.

 

Published by EOWeb on Wed 02 of May 2018

CryoSat reveals retreat of Patagonian glaciers

While ESA's CryoSat continues to provide clear insight into how much sea ice is being lost and how the Antarctic and Greenlandic ice sheets are changing, the mission has again surpassed its original scope by revealing exactly how mountain glaciers are also succumbing to change.
 
Glaciers all over the globe are retreating – and for the last 15 years, glacial ice has been the main cause of sea-level rise.
 
Apart from Antarctica, Patagonia is home to the biggest glaciers in the southern hemisphere, but some are retreating faster than anywhere else in the world.

 

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Published by EOWeb on Tue 03 of Apr. 2018

Antarctica loses grip

ESA's CryoSat mission has revealed that, over the last seven years, Antarctica has lost an area of underwater ice the size of Greater London. This is because warm ocean water beneath the continent's floating margins is eating away at the ice attached to the seabed.

Most Antarctic glaciers flow straight into the ocean in deep submarine troughs. The place where their base leaves the seabed and begins to float is known as the grounding line.

These grounding lines typically lie a kilometre or more below sea level and are inaccessible even to submersibles, so remote methods for detecting them are extremely valuable.

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Published by EOWeb on Tue 13 of Mar. 2018

Ocean GOP data gap filled

Further to the announcement published on 12 December 2017 regarding the start of the GOP production, Cryosat scientific users are informed that the GOP data gap between the end of the Baseline B (i.e. on 07 October) and the announced start of Baseline C (i.e. on 06 November), has now been filled with L1b and L2 Baseline C data.
 
The reprocessed data for 30 days are already available on the Science Server for download.

Published by EOWeb on Mon 05 of Feb. 2018

CryoSat rolls in orbit for calibration

CryoSat users are informed that a roll campaign is scheduled on 6 February 2018 (from 01:42:00 to 05:07:30 UTC and from 14:17:00 to 17:27:30 UTC). SIRAL instrument routine planning will be suspended and data gaps are possible. NRT users will be mostly affected.

This campaign is part of the periodic calibration activities to improve the quality of the mission products. Users will be notified when the data is made available online.

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