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GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002 GLC 2000 – South America map Presented by H.Eva E. E. de Miranda C. di Bella V. Gond.

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Presentation on theme: "GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002 GLC 2000 – South America map Presented by H.Eva E. E. de Miranda C. di Bella V. Gond."— Presentation transcript:

1 GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002 GLC 2000 – South America map Presented by H.Eva E. E. de Miranda C. di Bella V. Gond O.Huber S.Jones

2 GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002 Contributing Institutions

3 GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002 Logistical Approach 1/. Centralised processing 2/. First-pass class labels 3/. Regional expert assessment of classes – re-labeling 4/. Class rationalisation 5/. Integration of specialist areas for regional product

4 GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002 1/. Centralised processing –the data set Creation of seasonal mosaics from S10 product Jan-Mar Apr-Jun July-Sept Oct-Dec Cloud Screening Image selection on lowest SWIR

5 GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002 Combining of VGT seasonal images Masking of evergreen forest (use of TREES 2000) Unsupervised clustering to 50 classes

6 GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002 2/. First pass class labeling -Semi- evergreen forest -Dry forest -Shrubs (dense / sparse) -Savannah with shrubs -Savannah -Sparse grasslands -Agriculture -Barren

7 GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002 Class labeling -Spectral signature -Texture and context -NDVI profile -Existing land cover maps and ancillary data

8 GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002

9 GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002

10 GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002 Major Problems Cloud shadow in forest areas and Andes Seasonal aspects not directly related to the land cover – snow / flooding / burning Main spectral ambiguity – grasslands / agriculture Urban areas not easy to descriminate

11 GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002 Main problem areas – V1.1 NE Brazil Caatingas Andes transect Southern Brazil Argentina from Monte to Steppe Magellan grasslands

12 GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002 Venezuela Brazil Southern Cone Amazon forest 3/. Regional Experts working on data

13 GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002 Regional Experts helping with validation

14 GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002 4/. Integration of specialist areas for regional product Whilst all of South America is completed to the mimimum GLC 2000 legend – some areas/land cover types will have more detailed products -NE Brazil -Swamp forests (JERS-1 data) -Bamboo dominated forests (Acre / Peru)

15 GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002 Class rationalisation with other tropical regions

16 GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002 Intercontinental comparisons of vegetation dynamic from NDVI- derived parameters for each map class -maximum NDVI -adjusted minimum NDVI -range of NDVI -rates of change of NDVI -integrated NDVI -parameters of seasonality (fit of seasonally adjusted curves)

17 GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002 NDVI maximum monthly image – allowing intercontinental comparisons

18 GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002 -NE Brazil should be ratified with EMBRAPA by the end of March - A final “draft” for July / August -first draft map has been created -Errors due to spectral confusion -Lack of adequate knowledge of certain cover types Current Status

19 GLC 2000 – “FIRST RESULTS” WORKSHOP JRC – Ispra, 18-22 March 2002 Final Comment Importance of the Global Legend Importance of the Regional Legends and the partnerships with national experts worldwide


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