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Old November 27th 18, 03:27 PM posted to sci.astro.amateur
Gary Harnagel
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Posts: 659
Default Here it is: the real impact of global warming

On Monday, November 26, 2018 at 10:50:03 AM UTC-7, Quadibloc wrote:

An article on the BBC illustrates the kind of thing global warming is
doing to people:

https://www.bbc.com/news/world-asia-45715550

John Savard


climate change "might be" to blame, the reason for this "they believe"
is climate change? C'mon, John, that's not science.

But to the point of AGW:

(1) That the earth's temperature has been rising isn't a forgone prediction
that it will continue to do so. There are several factors not considered
in the climate models (e.g., the effect of solar wind on cloud formation
which affects the earth's albedo).

(2) That the rise in CO2 levels are correlated with the temperature rise
doesn't mean that one is causing the other. The meanest and nastiest
greenhouse gas is water vapor, and it increases with temperature REGARDLESS
of what causes the temperature increase. The interactive calculator,
modtran, demonstrates that doubling CO2 level from the present value has
a modest 1.1° C rise in temperature, and that INCLUDES the feedback effect
of water vapor. A 20% increase in water vapor has the same effect as
DOUBLING the CO2 level which, at the present rate of 2 ppm/year, will take
200 years to accomplish. So the effect due to CO2 amounts to .005° C/year.
If the earth is warming faster than that, intelligent people would
entertain other reasons.

Gary