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CH3041
GLOBAL WARMING II
• The enhanced concs.
of greenhouse gases
have increased the
troposphere’s ability
to trap heat resulting
in global warming.
of greenhouse gases
have increased the
troposphere’s ability
to trap heat resulting
in global warming.
• Global warming 1850 - 1990 :
measured 0.5oC shift from the mean
global T
computer
models predicted 0.3oC ± 0.3oC.
• Extrapolations using these computer
models predict a 1oC increase by 2040 and
a 1.4 - 5.8oC rise by 2100 from 1990 levels.
models predict a 1oC increase by 2040 and
a 1.4 - 5.8oC rise by 2100 from 1990 levels.
IPCC warming relative to 1990
