Table 1 Aggregated results, per cropping system, in terms of average dominance—across contingency tables analysed (second column)—in the co-occurrence of SYI magnitude classes equal or severer (third column), or only severer (fourth column), than SPEI classes within the lower-than-normal both moisture and yield macro-class (LY_D).

From: Complex drought patterns robustly explain global yield loss for major crops

Cropping system

N. of contingency tables analysed

% of co-occurrence where SYI class ≥ SPEI class [and % of contingency tables with co-occurrence > 66.7% among all classes]

% of co-occurrence where SYI class > SPEI class [and % contingency tables with co-occurrence > 50% among non-analogous classes]

Maize main

42

77% [95%]

51% [52%]

Maize 2nd season

25

71% [60%]

46% [44%]

Rice main season

33

74% [73%]

46% [45%]

Rice 2nd season

12

84% [92%]

68% [100%]

Soybean

33

82% [97%]

64% [94%]

Wheat (spring)

25

76% [80%]

52% [48%]

Wheat (winter)

85

78% [95%]

54% [72%]

Average

77% [87%]

53% [64%]

  1. Enter brackets, the share of duration-timing contingency tables presenting above threshold dominance is reported as calculated over the total number of contingency tables analysed.
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