GSC Sentinel-2 PDGS OCD - Emits - ESA

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GSC Sentinel-2 PDGS OCD Issue 1 Revision 2 (draft) - 25.07.2010 GMES-GSEG-EOPG-TN-09-0008 page 338 of 350 Figure A-6 below depicts the age of the LANDSAT scenes downloaded (in years). Figure A-6 L1T Product age Downloads LANDSAT images are delivered in one TAR compressed file (180MB), with all the 9 bands included. Each band file is terrain corrected (L1T) in GEO-TIFF format. Currently, two are the LANDSAT platforms flying, LANDSAT 5, launched in 1984 and LANDSAT 7 in orbit since 1999. The first one is able only to perform real time imaging without onboard recording, while LANDSAT 7 every day collect almost 300 scenes regularly available to the users within 24 hours of the acquisition. Based on the LANDSAT experience, it is anticipated that the total amount of Sentinel-2 data requested, thanks to its open access policy, will be quite comparable with the one currently observed at USGS. Sentinel-2 images (290x290 km) are 2.5 times greater in terms of on-ground coverage and 25 times larger in terms of data volume. A first estimate of 400TBytes per year is considered for Sentinel-2 by extrapolating that the coverage of an area of (100x100 km) with all Sentinel-2 bands will weight about 0.4 GBytes; multiplying this by one million of scenes, which is the LANDSAT actual demand, leads to 400TBytes. To limit the downloaded volume, a global tiling with a tile size of (100km x 100km) is highlighted as a good compromise. In addition, a mechanism allowing band sub-setting is underlined as an interesting trade-off, considering that the most requested channels will be likely the four visible ones (representing about half of the volume) which should help reducing the download budget. Compared to current requirements expressed though the DAP (cf. section A.4), these extrapolated volumes are 100 times greater. ESA UNCLASSIFIED – For Official Use © ESA The copyright of this document is the property of ESA. It is supplied in confidence and shall not be reproduced, copied or communicated to any third party without written permission from ESA.
GSC Sentinel-2 PDGS OCD Issue 1 Revision 2 (draft) - 25.07.2010 GMES-GSEG-EOPG-TN-09-0008 page 339 of 350 A.6 DAP-R Analysis Table The following table summarises the requirement of each service in terms of product semantics and access characteristics. A Sentinel-2 equivalent volume estimate is provided for reference for the volume computations (linked to the mapping frequency). Service Area Processing Level Ortho Accuracy Cloud Coverage Tasking Mapping Frequency Size of L1C Compr. Data [Gbyte] Delivery INFO LAND AND TERRESTRIAL SERVICE LMCS_001 – EEA-38 wall-towall coverage EEA-38 + associated countries 5.8 million km2 L1B, L3 (orthorectified & satellite reflectance) yes 1/2 pixel < 5% Predefined LMCS_009 – High Risk Areas 6000 km2 L1B yes 1/3 pixel Predefined LMCS_010 – Agroenvironmental analysis LMCS_012a – Europe land cover of forests, HR coverage LMCS_003 – Seasonal/annual land change monitoring: Africa selected areas (HR) LMCS_006c – Selected sites for validation of MR and LR biophysical products LGSE_001 – Global Monitoring Food Security: Crop mapping: Africa selected areas (HR) LGSE_003 – Forest Monitoring: REDD EEA-38 demonstration sites 73000 km2 European selectes sites 170000 km2 L1B No 1/3 pixel Predefined L1B, L3 (orthorectified & satellite reflectance) Every 3 Years - 2 coverages during vegetation season Annually or 3 to 4 per Year Annually or 3 to 4 per Year 290 Normal for archive data Wall-to-wall land-cover mapping at European scale for implementation, review and monitoring of EU policies (e.g. water framework directive, biodiversity strategy, common agricultural, regional policies) and also for reporting obligations under international treaties (e.g. the Kyoto Protocol), in line with national land-cover / landuse inventories in the Member States. SAR data may be used as backup. Reference year 2009. Baseline: 2 data takes during vegetation season in reference year 0.3 1-7 Days EU High Risks Areas. 4 data takes during vegetation season in reference year 3.65 once Normal yes 1/2 pixel < 5% Predefined Every 3-5 years 8.5 Normal Coverage of Europe’s main forest areas Africa selected areas L1B yes 1/3 pixel < 5% Predefined Every year European selected areas 3600 km2 Africa: National coverage at MR and selected areas at HR of the following countries: Mozambique, Malawi, Zimbabwe, Ethiopia, Senegal and Sudan Areas in the tropical belt 2-3 millions km2 Spot View ortho 500 per Year Normal yes 1/2 pixel < 10% Predefined Monthly 0.2 Normal L1B yes 1/3 pixel Predefined Yearly, new HR should be acquired every growing season L1B/C yes 1/3 IFOV Predefined One historical and one actual coverage (national / large regional) during dry season 200 Normal 150 Normal Environmental seasonal / annual change monitoring in development upon request from the user DGs (DEV, AIDCO, RELEX - plus high-resolution information on sites selected according to a statistically valid Area Frame Sampling scheme (AFS), as well as for hot-spot analysis. Selected sites among those identified by the Land Product Validation sub-group of CEOS for the validation of LR and MR biogeophysical parameters. Medium and high resolution crop mapping upon request from national and international users (FAO, WFP, Ministries of agriculture) - plus very high-resolution information on sites whereby field information cannot be collected Reduction of emissions from deforestation in developing countries for UNFCCC: 300 – 500 HR – VHR scenes over tropical countries for large area coverage. In addition medium and low resolution multi-seasonal acquisitions to fill holes due to cloud coverage. Archived (40%) and newly (60%) acquired scenes, 200 – 300 HR SAR images ESA UNCLASSIFIED – For Official Use © ESA The copyright of this document is the property of ESA. It is supplied in confidence and shall not be reproduced, copied or communicated to any third party without written permission from ESA.
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[RD-33] Sentinel-2 MSI - Level 2A A
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LES LGS Land Equipped Sites Local G
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3.5.2 MULTI-SPECTRAL INSTRUMENT CHA
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Table 4-5 Radiometric image quality
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Product- Type On-Line retention Off
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4.6.3 OPERATIONAL TRANSFER BASELINE
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Product- Type Identifier S2MSI0 S2M
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5 PDGS DESIGN GSC Sentinel-2 PDGS O
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○ Effective processing resources
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o preserving integrity of exchanged
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6 DETAILED OPERATIONS CONCEPTS GSC
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o Report generation frequency and c
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○ MSI L1A, L1B, L1C and TCI produ
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