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Japan - National rainfall index

1,578.0
(mm)
in 2001

Though Japan rainfall index fluctuated substantially in recent years, it tended to increase through 1970 - 2001 period ending at 1,578 mm in 2001.

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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 Value Change, %
2001 1,578.0 5.76 %
1995 1,492.0 -14.55 %
1990 1,746.0 15.86 %
1987 1,507.0 -5.40 %
1981 1,593.0 2.64 %
1974 1,552.0 0.65 %
1970 1,542.0 -7.61 %
1963 1,669.0