Analysis of crop indicators

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Crop indicators and yield forecasts are produced with 10-day intervals. They presented as 25 by 25 km grid cells, administrative regions or graphs. Crop indicators can be presented as departures from normal (other years or long term average), expressed in relative terms or absolute values. Assessments of the dates of occurrence of specific phenological stages are likely to be imprecise and probably only suitable to be expressed in relative terms such as departures from normal or ‘very late, late, normal, etc.’ (Vossen and Rijks, 1995).

Indicators available at EMU and NUTS resolution

  • Potential above ground biomass
  • Water limited above ground biomass
  • Potential storage organs biomass
  • Water limited storage organs biomass
  • Potential Leaf Area Index
  • Water limited Leaf Area Index
  • Total water requirement
  • Total water consumption
  • Relative soil moisture
  • Crop development stage

Indicators available at 25x25 km grid resolution

On a 25x25 km grid resolution, not only the above mentioned indicators are available, but also indicators that are frequently used for generating risk maps in critical periods (sowing, flowering, ripening and maturity). Most of these indicators combine a (sensitive) crop development stage with (unfavourable) weather conditions:

  • All above indicators
  • Precocity
  • Number of heat waves around crop development stage
  • Longest heat wave period around crop development stage
  • Rainfall around crop development stage
  • Rainfall around sowing
  • Temperature around crop development stage
  • Temperature around sowing
A viewer application supports the selection and visualisation of graphs (time profiles) and maps of the crop indicators at various resolutions.