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In 2002, national rainfall index for Ghana was 1,112 mm per year. Though Ghana national rainfall index fluctuated substantially in recent years, it tended to decrease through 1969 - 2002 period ending at 1,112 mm per year in 2002.The description is composed by our digital data assistant.
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