Table 1 Characteristics of the different Approaches to account for Drought sensitive Growth Stages in WII Design.

From: Phenology Information Contributes to Reduce Temporal Basis Risk in Agricultural Weather Index Insurance

GDD

Yearly Reporter

Immediate Reporter

Simulation

Observation

Observation

356 Weather Stations

1,200 reporters

400 Reporters

Numerous growth phases

7 growth phases for winter wheat

6 growth phases for winter wheat

Simulation of Anthesis occurrence possible

Anthesis not reported

Anthesis not reported

Immediate calculation

Available at the end of the year

Available immediately

Vernalizationa not considered

See Fig. 2 for the spatial distribution in the case study region

See Fig. 3 for the spatial distribution in the case study region

  1. aCoolness requirement of winter crops to induce generative growth phases. GDD Approach does not distinguish between winter and spring temperature loads29,30.
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