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Tchad - National rainfall index

648,2 (mm/an) en 2001

An indicator, developed by FAO, which represents the quality of the crop growing season. The NRI yearly results take into consideration the precipitation that year, the average precipitation over the period 1986-2000, the seasonality of the main crop-growing season (distinguishing between northern and southern hemispheres), and what areas of the country are wetter. The median of each five year period is provided. Note: due to methodological differences, this variable is not comparable to average precipitation

Date Valeur Modifier, %
2001 648,2 -5,57 %
1996 686,4 4,22 %
1992 658,6 16,92 %
1985 563,3 -20,04 %
1978 704,5 8,45 %
1976 649,6 -4,89 %
1968 683,0 -7,81 %
1967 740,9