Read the article. There is nowhere in it that the claim is made that CO2 is “bad” for climate change.
It is claimed to be a “‘point of no return’ into territory that is unknown for the human race,” but that need not imply any lasting or dire consequences.
CO2 is
the most important man-made greenhouse gas, which means (in a simple sense) that it acts like a blanket trapping heat near the surface of the Earth. It comes from the burning of fossil fuels such as coal, oil and natural gas, as well as deforestation. The level of CO2 in the atmosphere has risen from around 317 ppm in 1958 (when Charles David Keeling began making his historical measurements at Mauna Loa) to 400 ppm today. It’s
projected to reach 450 ppm by the year 2040.
To some, crossing the threshold of 400 ppm is a signal that we are now firmly seated in the “Anthropocene,” a human epoch where people are having major and lasting impacts on the planet. Because of the long lifetime of CO2, to others it means
we are marching inexorably towards a “point of no return,” into territory that is unknown for the human race.
Arguably, the article does claim “people are having major and lasting impacts on the planet,” How would that be known? In fact, prehistorically, CO2 levels were up to ten times higher than 400 ppm and those weren’t “lasting” since the earth also had lower levels of CO2 following those times.
Also, in fact, higher CO2 levels almost always followed increases in temperature, not the other way around. That makes sense since the oceans are a major store for CO2 and when they warm their holding capacity is reduced. Hence the rise in CO2 levels after global warming.
The language is rather tenuous. What exactly does “the most important man-made greenhouse gas” actually mean? It isn’t like all CO2 is man-made. And it isn’t as if it really is the most important greenhouse gas over all. In fact, the claim is demonstrably untrue since water vapour is far more significant as a greenhouse gas and it, too, is man-made to some extent.
Furthermore, what exactly does “
To some, crossing the threshold of 400 ppm is a signal that we are now firmly seated in the “Anthropocene,” a human epoch where people are having major and lasting impacts on the planet…,” mean?
Only
to some is this a signal? Which “
some” are those? Are they reliable experts or just propagandists? It doesn’t even say “to some
experts,” just “to some.”
Hardly convincing as demonstrating what you claim about CO2.
The first paragraph in the article is scare mongering, followed by a bunch of tenuous claims that a rise in CO2 levels might “for some” take us into a Pliocene-like scenario. No proof. No argument that temperature rise is inexorably linked to CO2 as the effect to a determinable cause. Just loose innuendo and appeals to emotional terrorism.
Nothing scientific or convincing. Written like a Bill Nye op-ed, absent the threat to jail or fine deniers.