Section 4.3: Surface Climate Analysis
59
Figure 4.1: Northern Hemisphere surface air temperatures for land and marine areas by season, 1854-1993. Standard meteorological seasons for the
Northern Hemisphere are used: winter is December to February, da ted by
the year of the January. Data are expressed as anomalies from 1950-79.
Time series in this and subsequent plots have been smoothed with a ten year
Gaussian filter.
0.5
0.0
-0.5
-1.0
0.5
0.0
-0.5
0.5
0.0
-0.5
0.5
0.0
-0.5
-1.0
0.5
0.0
-0.5
NORTHERN HEMISPHERE LAND+MARINE TEMPERA TURES
Summer
Autumn
59
Figure 4.1: Northern Hemisphere surface air temperatures for land and marine areas by season, 1854-1993. Standard meteorological seasons for the
Northern Hemisphere are used: winter is December to February, da ted by
the year of the January. Data are expressed as anomalies from 1950-79.
Time series in this and subsequent plots have been smoothed with a ten year
Gaussian filter.
0.5
0.0
-0.5
-1.0
0.5
0.0
-0.5
0.5
0.0
-0.5
0.5
0.0
-0.5
-1.0
0.5
0.0
-0.5
NORTHERN HEMISPHERE LAND+MARINE TEMPERA TURES
Summer
Autumn