What Signals Are Removed and Retained by Using an Anomaly Field in Climatic Research?
Figure 1
The time series of sine functions, their summation, and calculated anomaly. Shown are the sine functions with periods of (a) 2 months, (b) 4 months, (c) 6 months, (d) 12 months, (e) summation of the four time series (a) to (d), and (f) anomaly calculated from (e). The total time record of these time series is months (the plots are to 60 months). The anomaly calculation removes all signals of 2, 4, 6, and 12 months periods.
