Product details

Name	European Ground Motion Service – Calibrated
Acronym
Description	Main EGMS product as it serving the needs of most users. It is fundamentally the same as the Basic product but enhanced by the InSAR MP displacement values being referenced to model derived from GNSS time-series data, thereby making the InSAR measurements absolute (with reference to an Earth centred reference frame), i.e. line of sight velocity maps in ascending and descending orbits referenced to a model derived from global navigation satellite systems time-series data. Calibrated products are absolute, being no longer relative to a local reference point but absolutely referenced and consistent across space and time. This allows for comparison of deformations from adjacent areas belonging to different products of the same level.
Note	Product baseline available for the period from February 2015 to December 2020. Three annual updates are planned for 2021-2023.
Status	Operational
Group	EU-GM
Area	Europe
Component	Ground Motion Monitoring
Service	Copernicus Land Monitoring Service
Entrusted Entities	European Environment Agency
Created on	June 28, 2019, 10:06 a.m.
Last updated on	April 8, 2024, noon

Requirements

UID	Requirement	Level of definition	Relevant for	Criticality	Barriers	Note	Created on	Last updated on
369	GNSS	Firm	Product generation	Essential	Data policy Metadata Update Frequency		July 4, 2019, 10:10 a.m.	Nov. 9, 2020, 1:42 p.m.
379	Digital Elevation Model	Firm	Product generation	Essential	Accuracy Coverage	For InSAR production purposes, a very high-resolution DEM is not necessary, since the height of each measurement point above the reference DEM is estimated as part of the processing. It is much more important that the model is free of any anomalies and should have a uniform quality.	Oct. 15, 2019, 10:58 a.m.	Dec. 1, 2021, 10:14 a.m.
502	In situ ground motion monitoring data	Reasonable	Calibration and validation	Desirable	Availability Costs Coverage Data policy Timeliness	Required for validation of the EGMS products with the support of in situ instruments able to provide a time series of the measured parameter or as reference ground truth used for data comparison.	Dec. 6, 2021, 9:26 p.m.	Sept. 6, 2024, 9:29 a.m.
505	Snow Coverage	Reasonable	Product generation	Desirable	Coverage Timeliness Update Frequency	Snow-cover can compromise the quality of InSAR results by increasing the noise of time series. Detailed and up-to-date information about seasonal and permanent snow cover in higher latitudes and mountaneous regions could help to filter out images with extensive snow cover to allow for reliable InSAR coverage for production.	July 20, 2022, 3:08 p.m.	July 20, 2022, 3:13 p.m.
515	earthquake catalogue	Reasonable	Product generation	Desirable	Availability Coverage Timeliness Update Frequency	Rapid or abrupt movements of the Earth’s surface, such as those caused by earthquakes, can cause discontinuities in InSAR measurement. Knowledge as to the spatial and temporal characteristics of such events could allow for adapting processing strategies as well as processing and quality parameters in affected areas. Thus larger displacements could be retreived, anomalies during processing could be avoided, artefacts could be explained.	July 26, 2022, 9:48 a.m.	July 26, 2022, 9:48 a.m.
436	Land Cover	Reasonable	Product generation	Essential	N/A	Current CLC dataset; used for production and validation. Coverage requirement: Europe.	July 20, 2022, 3:32 p.m.	July 26, 2022, 5:23 p.m.
501	Numerical weather prediction data	Tentative	Product generation	Optional	Availability Data policy Timeliness	The use of Numerical Weather Prediction (NWP) data in production is not currently foreseen. The timeliness of the NWP and the computational burden they involve are not suited at the moment for continental-scale production.	July 27, 2022, 8:35 a.m.	Sept. 6, 2024, 9:25 a.m.