precipitation-evaporation ratio

For a given locality and month, an empirical expression devised for the purpose of classifying climates numerically on the basis of precipitation and evaporation. Abbreviated P-E ratio. Also known as precipitation effectiveness.

Related terms:

• P-E ratio
• precipitation effectiveness
• evaporation current
• solar evaporation
• drainage ratio
• frontal precipitation
• carbon isotope ratio
• clastic ratio
• mixing ratio
• precipitation cell