[Terrapreta] Anthropogenic casue for Global Warming

[Sean K. Barry]

Hi Kevin,

"On Earth, the major greenhouse gases are water vapor 
<http://en.wikipedia.org/wiki/Water_vapor<about:blank>>, which causes about 36–70% of 
the greenhouse effect (not including clouds ...

The Greenhouse effect is necessary in some respects.  Without any green house warming, the surface of the Earth would be covered in ice and virtually uninhabitable for many of the plants or life as we know it.  The recent increases in GHG gas concentrations have not been caused by natural forces, though.  Nor, is the consequent global warming.  Water vapor may yet increase with more evaporation caused by higher ocean temperatures.  But, CO2 and CH4 concentrations are changing the most now, what are increasing.  The source of these increases is humankind.

It is not the existence of the green house effect that is concerning, it is the increased ability of the atmosphere to hold in more heat that is the issue.  Human activity has produced the increased GHG concentrations.  This in turn has caused the increased green house effect and the consequent temperature increases and meteorological changes.  The atmosphere didn’t just do this by itself.  The ecology of the Earth's BIOME was in equilibrium 100s of millions if not billions of years BEFORE humans effected a "new" and startling change.  The change is clear.  The causative source is clear.

Read deeper, not so shallow and litigiously.   Did you even read the page 1686 SCIENCE article?  Does that not make clear that what the scientists think ... "That current global warming is caused by humans" ... ?  Scientists are not perfect and are not required to have a complete unanimous opinion!  They are not arguing and disagreeing with one another, not disorganized, and not entirely discordant in their views on this subject.  They, most all of them, pretty much agree.  Will no one listen?

Here is the last few paragraphs, again ...

This analysis shows that scientists publishing
in the peer-reviewed literature agree with
IPCC, the National Academy of Sciences, and
the public statements of their professional societies.
Politicians, economists, journalists,
and others may have the impression of confusion,
disagreement, or discord among climate
scientists, but that impression is incorrect.

The scientific consensus might, of
course, be wrong. If the history of science
teaches anything, it is humility, and no one
can be faulted for failing to act on what is
not known. But our grandchildren will
surely blame us if they find that we understood
the reality of anthropogenic climate
change and failed to do anything about it.

Many details about climate interactions
are not well understood, and there are ample
grounds for continued research to provide
a better basis for understanding climate
dynamics. The question of what to do
about climate change is also still open. But
there is a scientific consensus on the reality
of anthropogenic climate change. Climate
scientists have repeatedly tried to make this
clear. It is time for the rest of us to listen.

Regards,

SKB
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