Over the last decade, the Greenland Ice Sheet has shown rapid change, characterized by rapid thinning along the margins, accelerating outlet glaciers, and overall increasing mass loss. The state of the Greenland Ice Sheet is of global importance, and has consequently been included in the CCI Programme as a monitored Essential Climate Variable (ECV).
The object of the CCI Ice Sheets project is to maximize the impact of ESA satellite data on climate research, by analysing data from ESA Earth Observation missions such as ERS, Envisat, CryoSat and the future Sentinel series of satellites.
The project will produce data products of the following four parameters, which are important in characterizing the Greenland Ice Sheet as an ECV:
Surface Elevation Change (SEC) gridded data from radar altimetry;
Ice Velocity (IV) gridded data from synthetic aperture radar interferometry and feature tracking;
Calving Front Location (CFL) time series of marine-terminating glaciers;
Grounding Line Location (GLL) time series of marine-terminating glaciers.
The CCI data will be supplemented with partner agency data from missions such as Landsat and ICESat in order to provide consistent, long term time series of these four parameters. Together with mass change data from GRACE, and melt extent data from satellite microwave observations, the CCI Ice Sheets data sets will improve the monitoring of the most rapidly changing ice sheet on the planet.
All data will be made available to the public in a transparent format. We believe that the data sets produced van be of great societal importance, particularly due to the connection between Ice Sheets changes and future global sea level changes.
The sixth CCI Ice Sheets progress meeting was held in Copenhagen, Denmark on October 8th-9th. The meeting was hosted by our consortium partner DMI.
Day 1 of the meeting was planning data production scheduled to take place in the coming year and discussing the considered extensions of the CCI Ice Sheets project with CryoSat and Sentinel-1 data. The ongoing CCI Antarctica scoping study was also discussed.
Day 2 was spent planning the implementation and early operationalization of the ECV processors and the overall phase 1 system architecture. Validation and CIOP integration were the main topics of discussion. Read more »
The third issue of the ESA CCI Ice Sheets newsletter is now available here. The newsletter is intended to reach a wider audience than the official project documentation by presenting some of the results in a magazine-like format. The main topic of this issue is prototype data products.
The prototype products demonstrate the format and expected quality of the project output, expected to be finalized in 2014. For each parameter of the CCI Ice Sheets project, a prototype product is available for download from our products page. For further instructions on how to download the prototype please see the newsletter or the article on this page. Read more »
The Ice_Sheets_cci prototype products are available from the Products Download Page.
Fill in the simplified registration form by clicking on ’register’, then enter the following information about yourself: Your name in the following form: Firstname.Lastname, your organisation, and your email address. Choose your password and click ‘Register’. Click ‘log in’ and provide (again) your name on the form Firstname.Lastname, and the password you previously picked.
The SEC, IV, CFL and GLL products are now available and may now be downloaded from the page. Read more »
To assess the user requirements for satellite based Antarctic ice sheet data products we have produced a short on-line survey which we would be very grateful if you could complete. The questionnaire is short, containing just 16 multiple choice questions which take only 10 minutes to complete. The survey will remain open until 16.09.2013. We invite you, as a possible future user of these data products, to provide recommendations and feedback about what products you think it would be most useful for an Antarctic CCI project to focus on.
Please see the full invitation below: Read more »
The CCI Ice Sheets project has passed the third project milestone with the acceptance of an intermediate version of the Algorithm Theoretical Baseline Document (ATBD), and initial versions of the Detailed Processing Model (DPM) , the Input/Output Definition Document (IODD), and the System Specification Document (SSD). To see the documents click on the links in this news item, or click on "Resources/Documents" in the "Navigation" sidebar. To aid the reader a brief description is given of the contents of each document: Read more »
The poster Validation and inter-comparison of surface elevation changes derived from altimetry over the Jakobshavn Isbræ drainage basin, Greenland - Round Robin results from ESA's Ice_Sheets_cci, authored by our CCI Ice Sheets co-workers J. Levinsen (DTU-S), K. Khvorostovsky (NERSC), and F. Ticconi (UL) has received an EGU Outstanding Student Poster award. The award was given by the European Geosciences Union, Division on Cryospheric Sciences.
The poster describes the SEC algorithm selection following the Round-Robin exercise. The test area was Jakobshavn Isbræ drainage basin, and by analysing, inter-comparing and validating the results, it was found that a combination of repeat-track and cross-over analyses will result in SEC estimates with a high spatial resolution and low error estimates. Read more »
The CCI Ice Sheets project has passed the second project milestone with the acceptance of the Comprehensive Error Characterisation Report (CECR), the Product Validation and Algorithm Selection Report (PVASR), and the System Requirements Document (SRD). To see the documents click on the links in this news item, or click on "Resources/Documents" in the "Navigation" sidebar. The documents are also temporarily available from the "Direct Links" box. To aid the reader a brief description is given of the contents of each document: Read more »
The fifth CCI Ice Sheets progress meeting was held in Innsbruck, Austria on May 22nd-23rd. The meeting was hosted by our consortium partner ENVEO.
Day 1 of the meeting was spent determining which prototype products to prepare for the ESA Living Planet Symposium (September 9th-13th), possible extensions of the CCI Ice Project with CryoSat and Sentinel-1 data, as well as the possible creation of a CCI Antarctica project.
Day 2 was spent planning the implementation and early operationalization of the ECV processors and the overall phase 1 system architecture. Revision control, product version control and system testing were the main topics of discussion. Read more »
The second issue of the ESA CCI Ice Sheets newsletter is now available here. The newsletter is intended to reach a wider audience than the official project documentation by presenting some of the results in a magazine-like format. The main topic of this issue is the results of the Roind-Robin exercise.
The Round-Robin exercise was announced on this page, on the CRYOLIST email list, and by personal invitation of 47 select scientists. A total of 22 submissions were received, distributed between SEC (7), IV (9), and CFL (6). The GLL parameter received no submissions, this is understood to be due to the experimental nature of this parameter. The Round-Robin submissions were anonymized and analyzed. Read more »