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Samples in periodicals archive:
Annual rainfall is only about 12-15 inches per year, so we irrigate using mountain streams.
If current trends continue, say some researchers, this will increase to as much as two inches per year by 2025.
Rainfall averages only 15 inches per year, for example, in the Los Angeles area.
It only snows about 2 inches per year over most of Antarctica and the coldest temperature ever recorded on Earth - 128.
For example, Retallack's analysis of soils in Utah's Axhandle Canyon found that rainfall jumped from 16 inches per year to 26 inches a year along with an average temperature increase of almost 10 degrees.
Still, even under the best conditions, coral reefs grow at only three inches per year.
In some regions, the average rainfall is only 23 inches per year, the majority of it coming during the rainy season called meher, which lasts from May to September.
While rainfall registers about 50 inches per year, growers often have to irrigate their crops during extended drought periods.