GSC Sentinel-2 PDGS STBD - emits - ESA

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GSC Sentinel-2 PDGS STBDIssue 1 Revision 2 (draft) - 25.07.2010GMES-GSEG-EOPG-TN-09-0031page 49 of 60The volumes of metadata are considered negligible.The volumes of DEM, LR images, and Quicklook images have been estimated consideringthe reference segment size (290km x 6640 km), their resolution and their coding:Type of dataGeometricalResolution (m)Coding (bits)Volume (Gbit)DEM 60 16 7.97LR images (each band) 320 12 0.21(x 5 bands)QL images (each band) 320 12 0.21(x 4 bands)Ref Image 10 16 286.94In the following figure the graphical representation of the evolution of the processing datavolume across the production steps. The processing data volume of the figure below is thesum of the Input, Output and Auxiliary data indicated for each processing step in Table 8.Level-1 processing is very demanding in terms of data volume allocation because imagedata are uncompressed and the necessary auxiliary data have big volumes (especially DEMand Reference images).Total volume needed500,00450,00Processing Volume (Gbyte)400,00350,00300,00250,00200,00150,00100,0050,000,00Ana TMDatation & LR extractionInitLocInv, QL & TQ masksCloud Masks InvJP2K comprLevel 0Init Loc ProdDecompRadio S2Geo S2ResampleJP2K comprLevel1CProcessing stepESA UNCLASSIFIED – For Official Use© ESAThe copyright of this document is the property of ESA. It is supplied in confidence and shall not be reproduced, copied orcommunicated to any third party without written permission from ESA.
GSC Sentinel-2 PDGS STBDIssue 1 Revision 2 (draft) - 25.07.2010GMES-GSEG-EOPG-TN-09-0031page 50 of 604.6 Data Dissemination BudgetAccording to the Data Access Portfolio document, an estimate of the data volumes requiredyearly by the users has been conducted (cf. [RD-02]). It is underlined that the current versionof the DAP-R does not cover explicitly the Sentinel-2 image and thus all the requirementsand constrains have been extrapolated considering the service requirement relevance toSentinel-2 type of data.Starting from the areas of interest explicitly mentioned by the Services in DAP-R, theaveraged values of satellite data requested have been calculated. Nominal data is foreseento be delivered systematically on predefined task while the request for NRT data is notdeterministic (even if some possible NRT scenarios could be anticipated).PDGSNRT DataNRTNominal DataMARINENominal DataSECURITYNominal NominalRepositoryNominal DataNominal DataEMERGENCYLANDGMES SERVICESTaking into account the statistical occurrence of natural and anthropic hazards an averageof 450 events yearly during the last 10 years have occurred affecting an area of 100.000squared km for each disaster. A possible request of 150 NRT data scene charter activationsper year has been assumed as plausible for a total of 1000 GBytes of NRT data yearly. Amargin of 30% in the amount has been introduced for taking into account possible mistakesin the submitted orders.SERVICESNOMINAL[GBytes]NRT[GBytes]TOTAL[GBytes]LAND 1550 0 1550EMERGENCY 1600 1000 2600SECURITY 61 12 73MARINE 25 50 75TOTAL 3236 1062 4298Table 11: GMES Services Sentinel-2 Annual Data VolumeESA UNCLASSIFIED – For Official Use© ESAThe copyright of this document is the property of ESA. It is supplied in confidence and shall not be reproduced, copied orcommunicated to any third party without written permission from ESA.
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