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Greenness maps - Initial evaluation

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The FAO Senior Locust Forecasting Officer, Keith Cressman, presented an initial evaluation of the dynamic greenness maps developed by the Dept. of Environmental Sciences and Land Use Planning / …

The FAO Senior Locust Forecasting Officer, Keith Cressman, presented an initial evaluation of the dynamic greenness maps developed by the Dept. of Environmental Sciences and Land Use Planning / Environmetrics and Geomatics at the Université catholique de Louvain (UCL), Louvain-le-Neuve, Belgium.

The dynamic green vegetation map includes both the spatial and temporal information in one geotiff-formatted file suitable for analysis within the SWARMS GIS. The map shows the evolution of vegetation development for the previous 11 decades (i.e. eleven 10-day periods) for each 250m pixel, indicated in varying shades of red, orange and green. The product informs the user, in this case FAO’s Locust Forecasting Officer, of the spatial-temporal variations of the green vegetation and indirectly of the rainfall distribution through vegetation development. This allows the onset of green vegetation, and ephemeral vegetation (false starts), and the disappearance of vegetation at the end of its developmental cycle to be identified. It also indicates the location of evergreen vegetation that is of less importance to Desert Locust. The reporter presented his initial assessment of the new product, indicating some recession areas where vegetation changes are not detected.

Published in: Technology, Travel

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  • 1. Dynamic greenness maps: An initial evaluation Algerian Sahara Mauritania Sahel Pakistan summer breeding Yemen Red Sea coast Yemen interior Keith Cressman FAO Senior Locust Forecasting Officer October 2008Wednesday, 11 January 12
  • 2. Algeria non-seasonal sporadic rainfall in hyper-arid areas (11-20 July 2008)Wednesday, 11 January 12
  • 3. Algeria non-seasonal sporadic rainfall in hyper-arid areas (11-20 July 2008)Wednesday, 11 January 12
  • 4. MODISWednesday, 11 January 12
  • 5. MODIS UCLWednesday, 11 January 12
  • 6. Landsat UCLWednesday, 11 January 12
  • 7. Landsat UCLWednesday, 11 January 12
  • 8. MODIS UCLWednesday, 11 January 12
  • 9. Landsat UCLWednesday, 11 January 12
  • 10. Landsat UCL Algerian SaharaWednesday, 11 January 12
  • 11. Mauritania seasonal rainfall N Sahel summer breeding areas (1-10 Sep 2008)Wednesday, 11 January 12
  • 12. Mauritania seasonal rainfall N Sahel summer breeding areas (1-10 Sep 2008)Wednesday, 11 January 12
  • 13. UCLWednesday, 11 January 12
  • 14. UCLWednesday, 11 January 12
  • 15. MODISWednesday, 11 January 12
  • 16. MODIS UCLWednesday, 11 January 12
  • 17. Landsat UCLWednesday, 11 January 12
  • 18. Landsat UCLWednesday, 11 January 12
  • 19. Landsat UCLWednesday, 11 January 12
  • 20. MODIS UCLWednesday, 11 January 12
  • 21. Landsat UCLWednesday, 11 January 12
  • 22. Landsat UCLWednesday, 11 January 12
  • 23. Landsat UCLWednesday, 11 January 12
  • 24. MODISWednesday, 11 January 12
  • 25. MODIS UCLWednesday, 11 January 12
  • 26. LandsatWednesday, 11 January 12
  • 27. Landsat UCLWednesday, 11 January 12
  • 28. Mauritania interior Mauritania interior Landsat UCLWednesday, 11 January 12
  • 29. Pakistan SW Asia monsoon rainfall in summer breeding areas (1-10 July 2008)Wednesday, 11 January 12
  • 30. Pakistan SW Asia monsoon rainfall in summer breeding areas (1-10 July 2008)Wednesday, 11 January 12
  • 31. MODIS Pakistan India nal Ca an th jas RaWednesday, 11 January 12
  • 32. MODIS UCLWednesday, 11 January 12
  • 33. Landsat Pakistan India nal Ca an th jas RaWednesday, 11 January 12
  • 34. Landsat UCLWednesday, 11 January 12
  • 35. Yemen rainfall on Red Sea coast in breeding areas (1-10 July 2008)Wednesday, 11 January 12
  • 36. Yemen rainfall on Red Sea coast in breeding areas (1-10 July 2008)Wednesday, 11 January 12
  • 37. sandy rocky Red Sea coastal plains highlandsWednesday, 11 January 12
  • 38. MODISWednesday, 11 January 12
  • 39. MODIS UCLWednesday, 11 January 12
  • 40. Landsat UCLWednesday, 11 January 12
  • 41. Landsat UCLWednesday, 11 January 12
  • 42. MODISWednesday, 11 January 12
  • 43. MODIS UCLWednesday, 11 January 12
  • 44. Landsat UCLWednesday, 11 January 12
  • 45. Landsat UCL Yemen Red Sea coastWednesday, 11 January 12
  • 46. Yemen sporadic rainfall in summer breeding areas (21-30 June 2008)Wednesday, 11 January 12
  • 47. Yemen sporadic rainfall in summer breeding areas (21-30 June 2008)Wednesday, 11 January 12
  • 48. MODISWednesday, 11 January 12
  • 49. MODIS UCLWednesday, 11 January 12
  • 50. LandsatWednesday, 11 January 12
  • 51. Landsat UCLWednesday, 11 January 12
  • 52. Landsat UCLWednesday, 11 January 12
  • 53. MODIS UCLWednesday, 11 January 12
  • 54. Landsat UCLWednesday, 11 January 12
  • 55. Landsat UCL Yemen interior Yemen interiorWednesday, 11 January 12
  • 56. Initial impressions of the UCL product non-seasonal sporadic rainfall in hyper-arid areas misses green vegetation (Algerian Sahara) seasonal rainfall misses green vegetation in north in N Sahel summer breeding areas better in south (Mauritania) SW Asia monsoon rainfall some vegetation changes detected in summer breeding areas other vegetation? (Pakistan) rainfall on Red Sea coast difficult to detect annual vegetation in breeding areas better in cropping areas (Yemen) sporadic rainfall more reliable in cropping areas in summer breeding areas than in desert (Yemen)Wednesday, 11 January 12
  • 57. Phase 2 further refinement according to area and time of year hyper-arid areas in the Sahara (all year) northern Sahel, Indo-Pakistan,Yemen interior (summer) Red Sea coast (all year)Wednesday, 11 January 12