© geoland2 consortium European Commission Fast Track Service Land within the GMES initiative in FP-7 Approach for validation of geoland2 products: phenological vegetation trends over Europe R. Lacaze 1, P. Cayrol 2, F. Baret 3 1 HYGEOS, 2 Spot image, 3 INRA

LPV Phenology Meeting – Dublin - 18/06/ Outline The Geoland-2 project Context: GMES & Land Monitoring Core Service (LMCS) Objective, concept and structure of the project Validation of biophysical variables Phenology in geoland2 Definition of metrics Methodology Products How to validate ?

LPV Phenology Meeting – Dublin - 18/06/ Context Global Monitoring for Environment and Security (GMES) aims at providing, on a sustained basis, reliable and timely geo-information services related to environmental and security issues in support of public policy makers’ needs GMES is an EU-led initiative, in which ESA implements the space component and the European Commission manages actions for developing services, relying on both in-situ and space-borne remote sensing data. GMES is the European contribution to GEO/GEOSS GMES basic architecture Infrastructures: In-situ and Space data Core Services : Generic products Down-stream services: End-users applications “Fast Track” Services Marine Monitoring Emergencies Response Land Monitoring

LPV Phenology Meeting – Dublin - 18/06/ FP7 Fast Track Service Land project: geoland2 FP7 Project funded by European Commission Implementing the Land Monitoring Core Service - contributing to GEO, interacting with INSPIRE & SEIS 50 partners 171 collaborating user organisations (81 directly committed to geoland2) 32.5 Mio.€ volume – 4 years duration 22.4 Mio. € European Commission grant (FP7) 11 thematic tasks – 1 coordination office 3 stakeholder platforms ( users, science, service providers ) Objectives: To prepare, validate, and demonstrate pre-operational service chains and products of the LMCS To propose the specific functional organisation of LMCS

LPV Phenology Meeting – Dublin - 18/06/ geoland2 : Functional view 3 Core Mapping Services Euroland (Land Cover) BioPar ( Biophysical Products) SATChMo (Seasonal Monitoring) 7 Core Information Services Land Carbon Global Crop Monitoring Natural Resource Monitoring in Africa (NARMA) Agri-Environment Forest Water Spatial Planning

LPV Phenology Meeting – Dublin - 18/06/ geoland2 : links between CMS and CIS

LPV Phenology Meeting – Dublin - 18/06/2010 Validation of BioPar products Following the guidelines defined by LPV sub-groups Biophysical: LAI, FAPAR, FCover Surface radiation: Albedo Land Surface Temperature Fire & Burnt Areas Soil moisture G eneric approach: Inter-comparison with other existing products  Spatial consistency 1. Overall evaluation of products (maps, difference maps) 2.Statistical analysis (RMSE, bias, r)  Temporal consistency Direct validation  Ground local measurements  HR maps 7 Product NRT / Off-line Spatial Resolution Spatial coverage Temporal Resolution Sensor (Back-up) Continental Vegetation LAI, FCover, FAPAR, DMP, NDVI, Phenology NRT1 kmGlobal10-days VGT (MODIS) Times series of vegetation productsOff-line4 kmGlobal10-days AVHRR + VGT ClimatologyOff-line1 kmGlobal10-daysVGT Burnt areas + seasonalityNRT1 kmGlobalDailyVGT MERIS FR biophysical variablesNRT300 mEurope10-daysMERIS HR biophysical productsOff-line10 mPilot Areas4 times/yearSPOT Energy Budget Downwelling Shortwave Surface Flux Downwelling Longwave Surface Flux NRT~5 kmGlobal3 hours ΣGEO + AVHRR Land Surface TemperatureNRT~5 kmGlobal 3 hours, daily, 10-days ΣGEO + AVHRR Surface AlbedoNRT1 kmGlobal10-daysVGT Surface AlbedoNRT~5 kmGlobal10-days ΣGEO + AVHRR Water cycle Water bodies + seasonalityNRT1km, 250mAfrica10-days VGT, MODIS Soil Moisture + Freeze/ThawNRT0.1°GlobalDailyASCAT Time series of soil moisture products Off-line25 kmGlobalDaily ERS-1&2 Scatt

LPV Phenology Meeting – Dublin - 18/06/2010 Phenology in geoland2 Definition of phenological metrics: Start of growing season (a) : first date when value = MinValLeft + 10% End of season (b) : second date when value = MinValRight + 10% or value = MaxVal – 90% Maximum of growing season (e) : time for peak Length of season (g) : length = End (b) – Start (a). Time for the mid of the season (e) : computed as the mean value of the times corresponding to 30% of the amplitude 8 a b e g b a i a e b g i FCover

LPV Phenology Meeting – Dublin - 18/06/2010 Phenology in geoland2 – Methodology Pixel extraction of vegetation classes 2. FCOVER averaged per analysis unit (e.g. hydro units) 9 Corine Land Cover 2006 Hydro units Temporal series MERIS data Biophysical Process FCOVER maps (pixel scale)

LPV Phenology Meeting – Dublin - 18/06/2010 Phenology in geoland2 – Methodology Length of season Start of growing season End of season

LPV Phenology Meeting – Dublin - 18/06/2010 Phenology in geoland2 - Products Spatial coverage: Adour-Garonne Basin + Marne Basin (France) derived from MERIS FCOVER, 300m resolution Poland, Swedish & Finnish sites derived from MODIS NDVI, 250m resolution Temporal coverage: From 2009 to 2012 Updated every 10 days 11

LPV Phenology Meeting – Dublin - 18/06/2010 Phenology in geoland2 – Validation approach 12 Same approach as for Biophysical variables: Inter-comparison with existing satellites products: comparison MERIS / MODIS products in geoland2 Comparison with in-situ data  SnowCarbo project network: phenological observations , birch, scotts pines  Flux measurements stations: start and end of photosynthetic active period  COST Action: “Establishing a European data platform for climatological applications” has listed phenological networks Collaboration with PHAVEOS project ?

LPV Phenology Meeting – Dublin - 18/06/2010 Portal, Contacts 13 Access to geoland2 products: Biophysical products: BioPar Task Manager: Roselyne Lacaze, Scientific contact for vegetation products: Frederic Baret, Phenology product from MERIS: Scientific contact: Pascale Cayrol,