1. Copernicus Land Service
Global Land Component
Biophysical Variables
Ground Based Observations for Validation
Hot-Spot Monitoring
Sentinel-2 Global Mosaics
DG JRC – entrusted entity
M. Cherlet, M. Clerici, N. Gobron, A. Brink, JF. Pekel, Z. Szantoi

2. Global Land Component concept
Downstream applications
Core applications for land monitoring
Hot Spot monitoring packages
Thematic data products
Analysis Ready Data
Biophysical variables
Contextual info
20m
100m
300m
1km
Moving to:
Higher resolution global land products
On-the-fly processed products
Application oriented integrated products
Transparent access and use of products

3. Portfolio of the Biophysical Variables now completely in production
21 type products
3 resolutions
80+ data collections

4. Ground-Based Observations for Cal-Val

5. High Resolution Hot Spot Monitoring
Land cover/change maps and related indicators over specific Areas of Interest
Complements the near real time global monitoring service at low resolution
CAR_01 Carribbean (ACP)
Area 96,823 km2
LCCS level B
CAF_05_Garamba_addition
Area a 17,819 km2
Area b 11,540 km2
EAF_04_Niassa_Selous
Area 139,166 km2
SAF_21_Madagascar
Area 124,015 km2
WAF_04_Wapok
Area 57,777 km2
20 Key Landscape zones
Total area: km2

6. S2GM
Nadine Gobron (JRC)

7. Compositing period (day, 10-day, month, quarter, year)
Sentinel-2 Global Mosaic allows users to tailor products with respect to
Compositing period (day, 10-day, month, quarter, year)
Area of interest
File format (GeoTIFF, JP2, NetCDF)
Spatial resolution (10, 20, 60m)
Coordinate system (WGS84, UTM)
Bands to be included
Auxiliary information (AOT, geometry, scene classification, etc.)
Sentinel-2 data volumes and permutations of options make traditional approach of full-archive processing, storage, and distribution prohibitive. Instead: on-the-fly processing upon user request!
60m, Annual mosaic 2017

8. Two Compositing Algorithms
Short-term composite < 5 valid observations: Decision-tree approach evaluating scene classification, similar to Landsat WELD
MEDOID > 4 observations: Multidimensional median on entire spectrum
Rigid pre-processing to eliminate invalid observations
Generating mosaics pixel by pixel from original observations, no spectrum averaging or other image blending applied
Spatial resampling of bands to non-native resolutions if needed

9. Ordering S2GM products via Mosaic Hub
On-request generation of tailored mosaics leveraging on cloud resources and S2 L2A
Mosaic Hub as an interactive user interface
Website and desktop application with convenient download manager

10. Tailoring & Requesting
Dialogue-based Mosaic specification

11. Download User area lists all requests
Download manager ensures convenient and robust distribution

12. Analysis Ready products
Three file formats: jp2, GeoTIFF, NetCDF
INSPIRE-compliant
Accompanied by extensive metadata (xml, json, NetCDF Metadata)
Atmospherically corrected, quality controlled, fixed grid, fixed periods
Example: Exploit stack of S2GM products with Python’s xarray

13. Analysis Ready products

14. Analysis Ready products

15. Time-series tool Generation of time-series at arbitrary locations
Single pixels or 3x3
Direct inspection of data in the Mosaic Hub
Download as csv for further analysis

16. Summary Copernicus Sentinel-2 Global Mosaic service
Congo (QA4 2018)
Copernicus Sentinel-2 Global Mosaic service
provides scientifically sound mosaics of Sentinel-2 surface reflectance data on a global scale
is fit for various applications
is free to use by everyone
is accessible via and via CLMS
is operated by a team of dedicated experts ready to support users
Global Data Next Month

17. Evolution of the Global Land component of the Copernicus Land Service
Baseline
existing portfolio is maintained but further harmonized into vegetation, water, cryosphere products
all products at Sentinel-3 native and/or higher spatial resolutions
maintain and enhance the ‘application ready’ type products, such as phenology, land productivity (300m or higher) and the S2 GM
New Services
near real time high resolution land (cover) change alert system
thematic land layers (including status, changes, derived statistics on seasonality dynamics (inter and intra-annual variability) at S2 resolution:
Wetlands
Grassland
Forest (e.g. related to REDD+ needs), occurrence and changes
Natural vegetation (integrates parts of the above)
Agriculture
Urban areas: human settlements and population mapping products (see annex)
Surface water occurrences and trends

18. GLOBAL LAND COMPONENT
Thank you!

19. GLOBAL LAND COMPONENT and SDGs
Base support for addressing Sustainable Development Goals

20. GLOBAL LAND COMPONENT and SDGs
Global mapping of when and where of inland coastal waters at 30m, 32 years, to be adapted to S2
Land productivity Dynamics, 1km, 15 years (moving to 300m, 18 yrs)
GEO request to Copernicus for support to GEOGLAM
Global Human Settlement Layer
20m – 1km,
spatial-temporal evolution of the built-up surfaces and the population living there