also: ねんこうさ
annual range; yearly range
Meteorological term for the difference between the highest and lowest values of a climatic element (especially temperature) within a year.
The annual range of temperature in this region is large.
In an oceanic climate with a small annual range, the temperature difference between summer and winter is small.
Standard kanji spelling for this meteorological term.
Alternate reading; ねんかくさ is more common.
Compound of 年 (year) and 較差 (range, difference). The reading ねんかくさ is standard; ねんこうさ is a less common variant.