www.geoger.co.uk | @ajggeoger | http://uk.linkedin.com/in/ajggeoger/ Analysis Ready Data & Intermediate Products: streamlining access to data for land applications Alastair Graham | Geoger Ltd
jncc.defra.gov.uk www.geoger.co.uk www.specto-natura.co.uk www.apmgeo.co.uk
Overview • Analysis Ready Data • Why Intermediate Products? • The Processing System • UK Intermediate Products • User-Driven Development • What Now?
ARD
Analysis Ready Data (Sentinel-2) • Georectified • Stacked bands • Atmospheric correction to sref • Standardisation of pixel size? • Standard format • Cloud masked?
Why Intermediate Products?
Intermediate Products • Use common components • Highly automated • Improved quality • Improved consistency • Reduced cost • Reduced duplication of effort • Exploits economies of scale • Multiple use
Intermediate Products (EO) • Relates to basic surface property/indicator • Needed by a range of user communities • Standard, stable & transparent specification • Deliver spatially & temporally consistent results • Produced centrally within a qualified processing system with quality control • Available to the whole user community
Copernicus
Defra CoE/JNCC • NDVI, NDWI • Mosaicing and stacking • Monthly composites • Timeseries
The Processing System
Processing chain Analysis Ready NDVI Bespoke code Sentinel Data composites written in Bash, calling GDAL and pktools NDWI composites
Processing chain • HWL land mask for GB Preprocessed ARD – (EPSG: 27700) Extract bands • Admin land mask for NI – (EPSG: 29903) Calculate Int Prod • Date of max value recorded Clip to land mask for each pixel MVC Spatial metadata Put on S3
Data reduction • Input data – 114 Sentinel-2A scenes – Total data volume of ~5 TB – Download time ~12 days • Output products – 12 composite images for 2 indicators (+ meta data layers) – Total data volume 243 Gb
UK Intermediate Products
Results: single month
Results: coverage
Results: timeseries
Results: spatio-temporal
User-Driven Development
Users • There has been a wide range of interest • Standard workflows, no duplication of effort Organisation Relevance The Crown Estate (Rural) Land management The Crown Estate (Forestry) Forest estate management Organisation Relevance NT Conservation uses SNH Upland habitat mapping FAO Food security issues NE Living Maps project OS/RPA RPA updates EA Geomatics Support Enforcement Officers Eunomia Waste, environmental economics Forestry Commission National Forest Inventory Natural England Coastal habitats, regional monitoring Forest Research Forestry EODIP project Climate Wine Consulting Viticulture - Plant health and NRW Phase 1 mapping productivity, site suitability
What Now?
What Now? • Additional application examples • Additional Intermediate Products • Inclusion of other EO datasets • Optimisation of the code/workflow • ARD improvements
Thank you a.graham@geoger.co.uk
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