
I don't suffer fools well. I'm not sure if this is a virtue or a vice, but people must think me an opinionated, egotistical arse because of it.
Recently, I poo-pooed a slick-looking, HD-quality YouTube (oh sorry, GoogleTube) video of someone saying that Humans are not causing climate change. I was accused of having a closed, unenlightened mind because I refused to watch an hour+ long video on the grounds that I knew it was based on a scientifically invalid premise, yet it considered itself 'science'.
Here's some raw numbers in order to gain a perspective and to understand why I appear to be so dismissive.
But first, the summary.
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1- CO2 warms the planet
2- humans produced more CO2 in 50 years than found in the atmosphere over 400,000 years
3- humans are reducing plankton blooms, which 'eat' CO2
4- humans are reducing forests, which 'eat' CO2
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Humans are not only causing climate change but reducing the Earth's ability to self-regulate!!! Now comes the numbers and refs.
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**Fact #1: CO2 is a greenhouse gas. Uncontroversially, the more of it there is in the atmosphere, the warmer the Earth gets [1].
**Fact #2: There is around 750 billion tons of carbon in the atmosphere with 800 billion tons dissolved in the oceans [2].
**Fact #3: The US alone has been putting 5 billion tons of carbon in the atmosphere every year since 1990 [3]. That's 50 billion tons per decades, and I remind you, that this is long after America's peak industrial output. Looking at the rest of the world nations, the total annual output has gone from 10 billion tons (1960) to 25 billion tons (2000) PER YEAR [4]!
Very conservatively, that's 600 billions tons of CO2 produced in the past 50 years!!! Did you ever wonder why ice cores show we're at the highest concentrations of CO2 in the past 400,000 years [5]???
Now I'd be inclined to believe that despite this HUMAN influence, NATURE might self-balance, but HUMANS are also destroying the capability of NATURE to do this!
**Fact #4: Plankton convert CO2 from the air into Oxygen (supplying around 50% of the Oxygen in the atmosphere) while storing the CO2 in the ocean, but HUMANS are reducing this effect by destroying the ocean ecosystem by polluting the ocean with chemicals and by damming rivers which reduce sediment flow to the ocean. (Land sediment and the minerals in them are responsible for plankton blooms - it's what they 'eat'. Damn up the rivers, block the source of food for the bottom of the food chain [6] To put pesticides (things that kill living things) in the sediment is to put them in the base of the food chain.
While this seriously threatens our food supply, it is only one way human are causing/inducing/accelerating climate change by reducing the effect of the Earth to stabilize itself.
**Fact #5: Forests also convert C02 into Oxygen, the other major source of Oxygen in our atmosphere. HUMANS are reducing this natural conversion - causing a buildup of CO2 - by destroying forests. (For more forest facts, see [7] and [8])
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You can come to your own conclusions, but don't think I have a closed mind simply because I won't entertain YouTube/Google videos of professor/skeptics saying that humans are not affecting the environment.
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References:
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