The Southern Oscillation Index (SOI) is the difference between the
standardized Tahiti Sea Level Pressure (SLP) and the standardized
Darwin SLP measurements. The data was originally collected by
The Standardized Precipitation Index (SPI; McKee et al. 1993) is the number of
standard deviations that observed cumulative precipitation deviates from the
climatological average. The index is based ...
This data set consists of average gloabl temperature from an analysis
by Hansen and Lebedeff at NASA/GISS.
These data are an update of the analyses described by Hansen and
Lebedeff (1987). Discussions ...