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Analysis Ready Data & Intermediate Products: streamlining access to data for land applications Alastair Graham | Geoger Ltd
www.geoger.co.uk | @ajggeoger | http://uk.linkedin.com/in/ajggeoger/
Analysis Ready Data & Intermediate Products: streamlining access - - PowerPoint PPT Presentation
Analysis Ready Data & Intermediate Products: streamlining access - - PowerPoint PPT Presentation
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
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Overview
- Analysis Ready Data
- Why Intermediate Products?
- The Processing System
- UK Intermediate Products
- User-Driven Development
- What Now?
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ARD
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Analysis Ready Data (Sentinel-2)
- Georectified
- Stacked bands
- Atmospheric correction to sref
- Standardisation of pixel size?
- Standard format
- Cloud masked?
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Why Intermediate Products?
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- Use common components
- Highly automated
- Improved quality
- Improved consistency
- Reduced cost
- Reduced duplication of effort
- Exploits economies of scale
- Multiple use
Intermediate Products
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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
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Copernicus
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Defra CoE/JNCC
- NDVI, NDWI
- Mosaicing and stacking
- Monthly composites
- Timeseries
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The Processing System
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Processing chain
Analysis Ready Sentinel Data Bespoke code written in Bash, calling GDAL and pktools NDVI composites NDWI composites
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Processing chain
- HWL land mask for GB
– (EPSG: 27700)
- Admin land mask for NI
– (EPSG: 29903)
- Date of max value recorded
for each pixel
Preprocessed ARD Extract bands Calculate Int Prod Clip to land mask MVC Spatial metadata Put on S3
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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
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UK Intermediate Products
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Results: single month
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Results: coverage
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Results: timeseries
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Results: spatio-temporal
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User-Driven Development
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Users
Organisation Relevance SNH Upland habitat mapping NE Living Maps project EA Geomatics Support Enforcement Officers Forestry Commission National Forest Inventory Forest Research Forestry EODIP project NRW Phase 1 mapping Organisation Relevance The Crown Estate (Rural) Land management The Crown Estate (Forestry) Forest estate management NT Conservation uses FAO Food security issues OS/RPA RPA updates Eunomia Waste, environmental economics Natural England Coastal habitats, regional monitoring Climate Wine Consulting Viticulture - Plant health and productivity, site suitability
- There has been a wide range of interest
- Standard workflows, no duplication of
effort
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What Now?
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What Now?
- Additional application examples
- Additional Intermediate Products
- Inclusion of other EO datasets
- Optimisation of the code/workflow
- ARD improvements
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