Superposed-epoch method
From Glossary of Meteorology
superposed-epoch method
A technique used to study the relationship between two time series, where one series records the occurrence or nonoccurrence of a discrete event of particular interest and the other consists of data for a hypothetically related variable.
Relationships are established or rejected by comparison of variable behavior before or after the occurrence of like events. As a meteorological example, the method might be used to examine the influence of sunspot maxima (discrete events) on cloud cover (the variable).
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