Ramping up the propaganda leading up to the December 2015 UN summit in Paris, UN climate bureaucrat,
Christiana Figueres, in today's National Post, addressed Canada's role in the global effort to cut greenhouse gas emissions. Some of the first words were:
... [human] emissions have been scientifically proved beyond any reasonable
doubt to cause global warming, and if unchecked will have calamitous and
costly consequences for Canada and the world.
By itself, the statement that "[human]
emissions have scientifically proved beyond any reasonable doubt to cause global warming" is true. However, combined with the second part "
if unchecked will have calamitous and
costly consequences ..." and the subsequent blather about the urgency of reducing global emissions,
Figueres is saying that it has been
proven beyond any reasonable doubt that
human emissions are the dominant cause of global warming. and
that is flat-out false.
There is
a great deal of reasonable doubt about the extent of the human
contribution to global warming. One notable expression of that
reasonable doubt comes from
Judith Curry, Professor of Earth and
Atmospheric Sciences, Georgia Institute of Technology
. She
recently
gave
testimony at the US Congressional Hearings into the President's UN climate pledge. The lead-in paragraphs of her testimony:
"The central issue in the scientific debate on climate change is
the extent to which the recent (and future) warming is caused by
human-caused greenhouse gas emissions versus natural climate variability
that are caused by variations from the sun, volcanic eruptions, and
large-scale ocean circulations.
Recent data and research supports the importance of natural
climate variability and calls into question the conclusion that humans
are the dominant cause of recent climate change. .... "