Arridity Index is a combined measure of temperature and precipitation departures. In this context, the normalized temperature departure is subtracted by normalized precipitation departure. The featured map displays this metric computed over the entire summer by climate district. Positive values indicate areas of increased water stress. For the corn belt, a clear gradient is shown with the far eastern areas under the highest water stress with much of the western portion showing much less stress.

Voting:
Good = 10
Bad = 2

Tags:   arridity