Sentinel-2 applications in Africa, a cooperati htive approach · Sentinel-2 applications in Africa,...

Sentinel-2 applications in Africa, a ti hcooperative approach

Marc Leroy

Directorate Innovation, Applications and Sciences

CNES, Toulouse, France

1 Forum Eumetsat Kigali 12-16 September 2016

Scope

Report on Sentinel-2 data access and production of value-added products

Discuss cooperative framework with African stakeholdersstakeholders


Outline

Sentinel-2 data access – level 1

Sentinel-2 level 2 & 3 data production and access

Cooperation perspectives


Sentinel-2

Sentinel-2 is part of the Copernicus programme of EU and ESA

Main characteristics :

Global (no programming) Data every 5 days, everywhere 10 m resolution Standard product : orthorectified tiles, size 100 km Data policy : free and open Data policy : free and open

This unique setting represents probably a major turn in thedevelopment of remote sensing applications worldwide


development of remote sensing applications worldwide

Applications of Sentinel-2

Cartography at country level

Scales 1/200 000 or 1/250 000 easily accessible Map updating up to the 1/50 000 (to be assessed)

Forest monitoring

Agricultural statisticsAgricultural statistics

Urban expansion


Water bodies monitoring

First images

S2-A : launch on June 22, 2015S2-B : launch in Spring 2017


Verone, Italia

Data access – S2 level 1C

Data access for any user is now possible since early 2016y p y

At ESA (Sentinel Data Hub) At some EU Member States

For France, CNES has developed PEPS (Plate-Forme d’Exploitation des produits Sentinel)produits Sentinel)

http://peps.cnes.fr

First steps towards EU platform (scheduled 2018)


PEPS assets

Guaranteed access

Complete archive S1 S2 S3

Opened to all users

Complete archive S1, S2, S3Availability of the whole temporal and spatial archive 7 Po

User friendly access – HelpdeskAttention to Users

Processing meansProcessing close to data


Processing close to data

User friendly interface


Data production and access – S2 level 2A & 3A

Operational data production in the THEIA frameworkOperational data production in the THEIA framework

Data production of value-added S2 products is made by CNES in the framework of THEIAframework of THEIA

THEIA is a national network of land Earth observation

Value-added products :p» Level 2A : Atmospheric corrections, Cloud screening operational» Level 3A : Monthly composites operational» Level 3B : Land cover R&D» Level 3B : Land cover R&D


Example Level 2A producttile 100 x 100 km – region of Pretoria at two dates

CC Level 1C –07/04/16

Level 1C –28/03/16

Level 2A –28/03/16

Level 2A –07/04/16


tile 100 x 100 km – region of Pretoria at two datesPretoria at two dates


Level 2A – 28/03/16 Level 2A – 07/04/16

Level 2A – 21/03/16 Level 2A – 07/04/16 Level 2A – 28/03/16

4 tiles 100 x 100 km –region of Pretoria

Level 3A -Monthly

Level 3A –1rst April 2016


ycomposites

4 tiles 100 x 100 km – region of Pretoria

Level 3A –1rst April 2016


Data production and access – S2 level 2A & 3A

Production and access status

Operational production of S2 level 2A & 3A just started at CNES

Resources are available for 5 to 10 Mkm2

Data policy : free and open. Access at www.theia-land.fr

Areas of production : partly defined


First S2 level 2A & 3A production areas

First areas to be produced

28 areas selected, including 11 areas in Africa

Additional areas to be considered in cooperation framework

Full coverage to be Full coverage to be produced by EU/ESA at a later stage


Enhancing cooperation with Africa

Strengthening public policy consistency and efficiency

Reinforce coordination at national level with other French national institutions : IRD, CIRAD, AFD, …

Better coordinate national efforts with those made in the framework of MESA Better coordinate national efforts with those made in the framework of MESA and GMES & Africa

Implementing demonstration projectsImplementing demonstration projects

Liaise with national African institutions in charge of public policies (e.g. forest, water, agriculture, cartography, urban expansion …)water, agriculture, cartography, urban expansion …)

Demonstrate and make perennial in these institutions the use of S2 data


Examples of potential international cooperationscooperations

Cartography

Discussions with EMA (Ethiopia) to support with Level 3A data mapping update of Ethiopia at 1/50 000 scale

Forest

Discussions with AGEOS (Gabon) and partners to support with Level 3A data the forest and forest change mapping over Central Africa sub-region

Agricultureg

Discussions with IRD, CIRAD, IGN-FI, AFD and regional partners to support with Level 2A, Level 3A data agriculture national services in Côte d’Ivoire and Sénégal


Conclusion

Sentinel-2 data access worldwide with a free and open data policy is now possible. CNES contributes with PEPS (http://peps.cnes.fr)

The operational production of value-added Sentinel-2 products started on The operational production of value-added Sentinel-2 products started on selected pilot areas (www.theia-land.fr)

C i i h Af i i b i i i d d l i l Cooperations with African countries can be initiated to develop operational applications on agreed areas


Sentinel-2 applications in Africa, a cooperati htive approach · Sentinel-2 applications in Africa,...

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