Figure 2.12: (a) Seasonal
anomalies of global average temperature (°C), 1958 to 2000, relative to 1979
to 1990 for the lower troposphere, as observed from satellites (MSU 2LT) and balloons
(UKMO 2LT), and for the surface (adapted from Jones et al., 2001). Also shown
(bottom graph) are the differences between the surface temperature anomalies and
the averages of the satellite and balloon-based observations of the lower-tropo-spheric
temperature anomalies. (b) As (a) but for the temperature of the lower stratosphere,
as observed from satellites (MSU 4 and SSU 15X) and balloons (UKMO 4). The times
of the major explosive eruptions of the Agung, El Chichon and Mt. Pinatubo volcanoes
are marked. Also shown (bottom graph) are the differences between the MSU 4 and
UKMO 4 based temperature anomalies.
