A helpful glossary of terms associated with weather and climate.

# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Ensemble forecast

The computer model is run a number of times from slightly different starting conditions. The complete set of forecasts is referred to as the ensemble, and individual forecasts within it as ensemble members.

Extreme value analysis

A statistical analysis which can be employed to estimate the theoretical maximum or minimum value attainable by infinite 'trials' of any particular system. For example, maximum wave height at a particular location.