GSC Sentinel-2 PDGS OCD - Emits - ESA

GSC Sentinel-2 PDGS OCD
Issue 1 Revision 2 (draft) - 25.07.2010
GMES-GSEG-EOPG-TN-09-0008
page 325 of 350
APPENDIX-A GMES PRODUCT REQUIREMENT ANALYSIS FOR
SENTINEL-2
A.1 Introduction
This appendix provides a review of the identified needs of the GMES Services to be fulfilled
by the Sentinel-2 provided products and outlines a rationale driving the product design in
response.
In this exercise, GMES needs are extrapolated from the following sources
○ The requirements expressed in the DAP-R [RD-11] when relevant to Sentinel-2 type of
sensor and the understanding of the requirements of existing GSPs and ESA funded
GMES Service Element (GSE) projects (as precursors of future GMES Services)
currently requiring Sentinel-2 type of data;
○ The requirements expressed in the Sentinel-2 MRD [AD-01];
○ The GMES Data Policy;
○ The extrapolation of the above requirements in view of the Sentinel-2 era, i.e.
considering the specificities of the Sentinel-2 mission, the Data Policy and in particular
the enhancements it will bring to the existing supply of Sentinel-2 type of data.
A.2 DAP-R Analysis Logic
As part of the GMES Space Component, the Earth Observation Data Access Portfolio (DAP),
describes the European coordinated approach for supplying Earth Observation data to the
GMES service providers. Moreover DAP provides indications concerning the data and
condition under which data should be made accessible.
The requirements of the DAP-R have been reviewed in view of deriving implications on the
PDGS operations and design concepts to match the supply of data-products to the demand,
based on the currently identified needs of the GMES Services for Sentinel-2 type of data. As
it is expected that these requirements will evolve in time and will be enhanced with new
National and scientific requirements, extrapolations have been made to place the DAP-R in
the Sentinel-2 timeframe and according to the expected enhancements brought in by the
mission compared to the present supply.
The DAP-R requirements are currently expressed based on present EO missions and their
respective product types in terms of semantic contents, timeliness and availability. As applied
to Sentinel-2, the requirements have been filtered to cover the Sentinel-2 type of sensor
(optical mission with resolution >=10 m) referred to in the DAP-R as High-Resolution (HR)
sensors.
The European Commission has identified a set of three Fast-track GMES core services (i.e.
Land, Marine and Emergency) and two additional pilot services (Security and Atmospheric)
for early operational implementation in 2008, funded under the European Commission FP7
programme. Yet, in the vision of GMES, new services will spin-off (i.e. downstream services)
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