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The JRC contribution to CAMELS: Dataset of fAPAR products

The JRC contribution to CAMELS: Dataset of fAPAR products. Nadine G o bron & Bernard Pinty presented by Peter Cox, with no french accent. 10-days composite fAPAR over some CarboEurope sites from 1998-2001

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The JRC contribution to CAMELS: Dataset of fAPAR products

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  1. The JRC contribution to CAMELS:Dataset of fAPAR products Nadine Gobron & Bernard Pinty presented by Peter Cox, with no french accent

  2. 10-days composite fAPAR over some CarboEurope sites from 1998-2001 Global monthly composite of spatially aggregated at 10 km x 10 km and 0.5 ° x 0.5° in latitude-longitude Expected Deliverables

  3. This task was achieved on August 2003  fAPAR & associated products; & software to read/access products; & documentations were delivered to Galina Churkina (they should be available under the CarboData web site this month). Task 1 10-days fAPAR over 11 CarboEurope sites from Sep. 1997 to Dec. 2001 Done

  4. fAPAR time series in a 30 x 30 km window centered around the Carbodata sites IDL code to read pdf file for each site which contains … Task 1 How are they organized?

  5. Task 1 Documentation file describes Name of Site Geographical coordinates Country Location of the Site Ref: Gobron et. al. (2003) ‘European Vegetation Activity from Space’, CarboEurope Sites, IES, EUR 20764 EN.

  6. 10-days time series Task 1 Monthly time series Overview of 4 Years time series

  7. Task 1 Histogram and statistics using 10-day (top) and monthly (bottom) FAPAR time series from 1998 to 2001 spatially averaged over 3 x 3 pixels over the central pixel.

  8. Task 1 Single year analysis At the central pixel Averaged over 3 x 3 pixels 9 x 9 pixels

  9. Task 1 Information associated with the spatial averaging procedure Limited variations between time-series illustrate ‘spatially homogeneous surfaces’ wrt the fAPAR product

  10. To provide an extra piece of code to facilitate the reading of FAPAR time series when data are missing over the full window (Action on NG) Additional sites to be extracted (Action on CAMELS drivers: which sites are their highest priorities ?) Task 1 10-days fAPAR over CarboEurope sites from Sep. 1997 to Dec. 2001 To be Done

  11. A preliminary version of the software has been developed and is currently under testing. It delivers series of products at multiple spatial resolutions, for example : 10 x 10 km & 0.5 X 0.5 degrees Task 2 Global monthly composite spatially aggregated Done

  12. Task 2 Number of original pixels inside the aggregated one Contents of the file for the monthly composite spatially aggregated @ 0.5 x 0.5 degrees

  13. Task 2 0. 0.5 1.0 Example of the global fAPAR monthly composite spatially aggregated @ 0.5° x 0.5° June 2000

  14. Task 2 0. 0.5 1.0 Example (30 % reduced) of the global monthly composite spatially aggregated @ 10 x 10 km : fAPAR June 2000

  15. Task 2 0. 0.5 1.0 Example (100%) of the global monthly composite spatially aggregated @ 10 x 10 km June 2000

  16. Task 2 Global monthly composite of spatially aggregated To be Done • Check all elements of the software (January/February 2004) • Finalize the content and format of the file (require CAMELS inputs: what additional fields are useful?) • Apply on Year 2001 and deliver to CAMELS for testing

  17. Is there any specific well-identified request from CAMELS that is not yet covered? How are we (JRC), in practice, associated to the scientific interpretation of these products ? What are the benefits of the fAPAR products and how do we evaluate them ? What else ??

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