A review of the 20th century observations documenting the rise
in
global-mean temperature and the controversy surrounding it.
- the 'hockey stick curve' in the 2000 PICC report documenting the large
rise in
global-mean temperature during the 20th century
relative to the changes of the
past thousand years; this new paradigm, which deemphasizes
the Medieval Warm
Period and the Little Ice Age has drawn sharp criticism
from global warming
skeptics. I showed samples from John Daly's web
page, which cites lots of
counterevidence but does so extremely selectively.
- is the apparent rise in global surface air temperature during the
20th century
due to urbanization?
- surface observations indicate that the earth is getting warmer, yet
satellite
measurements of tropospheric temperature indicate
little. if any temperature
trend since 1979? Which is right?
- some scientists have suggested that global warming is causing an inreasing
rate
of incidence of severe weather events like follds
and hurricanes. Are they right?