The evolution of the Sentinel Collaborative Ground Segment
12 January 2017
ESA and its Member States created the Sentinel Collaborative Ground Segment (CollGS) to further enhance the Sentinel missions exploitation in various areas. Today, the cooperation is also open to all European countries and Copernicus Participating States.
Besides the challenging task of building and launching a satellite, a key indicator of the success of an Earth observation mission relies on ensuring that the data gathered are of good quality and made easily available to users.
These functions are all ensured by the Copernicus Space Component (CSC) Ground Segment.
The Sentinel Collaborative Ground Segment complements the Copernicus Ground Segment. This entails additional elements for specialised solutions in different technological areas, such as data acquisition, complementary production and dissemination.
But what does the CollGS do, exactly?
- National entities can build-up their own mirror data archive and base operational services on Sentinel data. Participating countries then redistribute the Sentinel data and/or value added products from their “mirror sites”, to institutional, commercial and science users.
- Many mirror sites in place are now also adding hosted processing to their services.
- If technically required to meet data timeliness obligations, local ground stations are configured to listen-in as Sentinel data is downlinked to core ground stations. This allows for quasi-real time product generation as, for instance, in supporting marine surveillance activities in the Baltic Sea.
- Furthermore, in the frame of the CollGS, national initiatives carry out the development of innovative tools and applications.
Canada, which is an associate ESA Member State, operates extremely important land and maritime monitoring activities, with C-CORE and other organisations. Having established a CollGS agreement, they can access the Sentinel products via a data hub operated by ESA and dedicated to collaborative partners.
Shahid Khurshid, Physical Scientist at Meteorological Service of Canada, and Matt Arkett, Acting Manager of Earth Observation and Geomatics, at Environment and Climate Change Canada, said: “Environment and Climate Change Canada’s Operational National SAR Winds (NSW) system provides near real-time delivery of marine wind measurements derived from spaceborne synthetic aperture Radars (SAR) to support marine forecasters & other applications.
“The programme has been operational since 2013, ingesting SAR data from the RADARSAT-1 and RADARSAT-2 missions. The NSW system began to generate operational surface wind maps using Sentinel-1A data in April 2016 and Sentinel-1B in September 2016.
“Access to Sentinel-1 data has significantly increased the temporal and spatial frequency of marine wind speed information being delivered to our operational marine forecasters.
- Copernicus Sentinel-1 change of GPS antenna reference point for POD July 23, 2020 8:38 amThe Copernicus Sentinel-1 POD configuration will evolve by end of July 2020 to improve the orbital accuracy of Sentinel-1 PRE, NRT and NTC products by correcting the GPS Antenna Reference Point (ARP) location. The impact on the POD was identified by the CPOD Quality Working Group (QWG), by the presence of non-negligible empirical forces and significant differences between Sentinel-1A and Sentinel-1B, but a thorough investigation was necessary to identify the root cause of it. The new ARP values are documented in the Sentinel-1 Properties for GPS POD document.
- Copernicus Sentinel-1 used to better understand active volcanic areas and landslide mechanisms July 23, 2020 7:46 amThe recent development of MasTer tool – an InSAR automated Mass processing toolbox for multidimensional time series, is making a difference in the systematic and automatic use of Copernicus Sentinel-1 data for ground deformation monitoring.
- Copernicus Sentinel-1 products availability resumed on 13 July 2020 July 14, 2020 8:18 amWith reference to the news on 13 July, the Copernicus Sentinel-1 data flow has been re-established.
- Copernicus Sentinel-1 offline product restoration from LTA anomaly July 13, 2020 7:49 amThe restoration of the Copernicus Sentinel-1 offline products from the long term archives has been affected by an anomaly since 13:00 UTC, 8 July 2020.
- Copernicus Sentinel-1 products not available since 11 July 2020 July 13, 2020 7:15 amNo new Copernicus Sentinel-1 products have been published since 11 July at approximately 07:00 due to an anomaly on the Sentinel-1 ground segment.
- Copernicus Data Hub services restored to nominal operations May 28, 2020 12:34 pmThe infrastructure incident that occurred at 00:00 on 27 May 2020 has been fixed and all data access services have been restored to their nominal operations.
- Copernicus Sentinels help classify river ice May 28, 2020 7:14 amRiver ice jams are a prime source of flood risk in cold regions. This recently occurred in Alberta, Canada, where the flooding of Fort McMurray resulted in the evacuation of the downtown district and in extensive damage. Copernicus Sentinels are lending a hand to monitor river ice conditions before ice jams affect towns and cities.
- Sentinel Success Stories brochure May 21, 2020 7:01 amA new brochure featuring some of the highlights of our Sentinel Success Stories is now available and demonstrates just some of the successes of the Sentinels.
- Copernicus Sentinels to improve Coastal Management Systems April 30, 2020 11:32 amClimate Change and human activity will have an increasingly dramatic effect on coastal zone management in the foreseeable future—but data from the Copernicus Sentinel missions have the potential to add enormous value to coastal zone management solutions.
- Copernicus Sentinel-1 helps map extent of floods April 24, 2020 10:55 amLast February, Argentina was struck with a severe storm that caused floods and damage. Data from the Copernicus Sentinel-1 mission helped to map the event, in ways which could assist crop insurers with occurred losses.
- Copernicus Sentinel-1 data could improve drought index insurance schemes February 27, 2020 7:58 amResearchers of a Swiss company are testing Copernicus Sentinel-1 data to better calibrate the Enhanced SAR Vegetation Index (ESVI) for drought conditions, which could help insurance plans for farmers.
- Copernicus Sentinel-1 Long Term Archive service restored - 3 and 11 February 2020 February 14, 2020 10:53 amWith reference to the news published on 31 January 2020, users are informed that the retrieval of Copernicus Sentinel-1 offline products from the Long Term Archives has been resumed on the following dates: APIHub: 3 February 2020 at 11:00 UTC SciHub: 11 February 2020 at 13:40 UTC.
- Copernicus Sentinel-1 delivers change maps for wildfires February 11, 2020 8:28 amA recent study was carried out comparing NASA's FIRMS data with Copernicus Sentinel data, resulting in Copernicus Sentinel-1 data particularly detecting wildfires in Australia.
- Copernicus Sentinel-1 Long Term Archive service temporarily suspended (31 January 2020) January 31, 2020 5:30 pmThe restoration service of the Copernicus Sentinel-1 long term archived products has been temporarily suspended for an infrastructure anomaly since 16:00 UTC, 31 January 2020.
- Safety of infrastructure systems January 23, 2020 8:09 amFeaturing how satellite data, such as those from the Copernicus Sentinel-1 and -2 missions, are being used to monitor infrastructure systems in urban areas.
- Copernicus Sentinel-1B unavailability January 16, 2020 5:04 pmCopernicus Sentinel-1B was unavailable on 16 January 2020 from 14:06 UTC to 17:48 UTC, due to a SAR anomaly. No data were generated during this period.
- Copernicus Sentinel-1 supports the monitoring of the Taal volcano eruption, Philippines January 14, 2020 9:23 amTo provide a better monitoring of the Taal volcano eruption in the Philippines, specific Copernicus Sentinel-1 observations are being planned to ensure a 6-day repeat in both ascending and descending passes (relative orbits 142 and 32), using both Copernicus Sentinel-1A and Copernicus Sentinel-1B satellites.
- Copernicus Sentinel-1A unavailability on 6 January 2020 January 7, 2020 10:16 amCopernicus Sentinel-1A was unavailable on 6 January from 14:17 UTC to 17:42 UTC, due to a Payload Data Handling and Transmission (PDHT) sub-system anomaly.
- Copernicus Sentinel-1 to the rescue December 13, 2019 1:35 pmWhile two explorers were having problems cruising the ice across the North Pole on skies, due to bad weather and complications with equipment, the Copernicus Sentinel-1 satellites lent a hand to guide rescuers through the maze of ice and water to save the day.
- Safety at Sea December 11, 2019 5:51 pmFeaturing how the Sentinel missions of the European Union's Copernicus programme, particularly Sentinel-1, have become a game-changer to the Danish Meteorological Institute's Ice Service and to the project – Automated Sea Ice Products – creating a robust, automated sea ice information service, solving the main needs of Arctic marine users.