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Figure 2.3.
Seasonal mean time series of global-mean temperature anomalies from 1979 to 1998.
The red curve shows lower to mid-tropospheric temperature from MSU 2LT (Christy
et al., 2000). The green curve shows temperature data from the same layer as measured
by radiosondes (i.e., "simulated 2LT") (Parker et al., 1997). The black curve shows surface
temperature data (a combination of land air and sea based on the Jones et al. (1999) data set).
The light gray line represents the mean of each time series. The first season is March–May 1979,
and the last season is September–November 1999 for the MSU data set and December 1998–
February 1999 for the other two data sets. El Niño, La Niña, and volcanic cooling episodes are
indicated below the figure.
Figure 2.4.
As in Figure 2.3, but-for the tropical domain 20 °S - 20 °N.
