“CO2
is a pollutant”
A
point I had to yield to the climate change deniers
Usually
it is fairly easy to counter any disinformation coming from climate
change deniers.
One
of the arguments they use is that CO2 is not a pollutant and is
important for photosynthesis.
I
wrote a fairly “off-the-cuff” rejoinder (to comments by Vinny Eastwood on Facebook) pointing out that no one
is saying it is a pollutant because it is a trace gas that is very
important in maintaining the thermal balance of the atmosphere -too
little and we freeze, too much and we burn, put quite simply.
I
decided, in a free moment to check for myself and imagine my HORROR
when I discovered that conventional websites are saying just that
“CO2
is an air pollutant”
I chose this item from "Skeptical Science":
The
US Clean Air Act was incorporated into the United States Code of
Federal Regulations, Title 42, Chapter 85. Its Title III, Section
7602(g) defines an air pollutant:
The
term “air pollutant” means any air pollution agent or combination
of such agents, including any physical, chemical, biological,
radioactive (including source material, special nuclear material, and
byproduct material) substance or matter which is emitted into or
otherwise enters the ambient air.
***
This is preposterous.
CO2 is indeed an important trace gas and we could not live without it. It is is CO2 that is turned into oxygen by plants in photosynthesis.
It is an incredibly important trace gas for maintaining the energy balance of the planet, belied by its small amount in the atmosphere (we don't breathe, or use in any way that I know of, the nitogen which accounts for 78 percent of the atmosphere) whereas CO2 is an important trace gas.
Wikipedia says:
Carbon
dioxide (CO2)
is an important trace
gas in Earth's
atmosphere.
It is an integral part of the carbon
cycle,
a biogeochemical cycle in which carbon is
exchanged between the Earth's oceans,
soil, rocks and the biosphere. Plants and
other photoautotrophs use
solar energy to produce carbohydrate from atmospheric carbon dioxide
and water by photosynthesis.
Almost all other organisms depend on carbohydrate derived from
photosynthesis as their primary source of energy and carbon
compounds. CO2 absorbs
and emits infrared radiation
at wavelengths of
4.26 µm (asymmetric
stretching vibrational
mode)
and 14.99 µm (bending vibrational mode) and consequently is
a greenhouse
gas that
plays a significant role in influencing Earth's
surface temperature through the greenhouse
effect.[1]"
The incredibly spurious claim that "CO2 is a pollutant" plays into the hands of climate change deniers who hardly get anything right.
They did, however, get this one right.
There really is no need to lie to put a point across.
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