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The plant food known as carbon dioxide was demonized. In 2013, the figure of 400 parts per million (PPM) was said to be a “tipping point.” It was said to be an unprecedented number — the “highest ever recorded,” and certain to cause catastrophic global warming if not curtailed immediately.
But the first accurate measurements of atmospheric CO2 began in the 1950s. Those 60 some-odd-years are hardly a long enough sample size. Back then, CO2 levels were measured at 314ppm, which makes 400ppm seem like a gigantic increase. But even at that 400ppm number, Carbon dioxide makes up 0.04 percent of the Earth’s atmosphere.
Another thing that climate scientists won’t tell you is that complex plant life depends on having at least 150ppm of CO2 in the atmosphere. Scientists estimate that carbon dioxide during the last ice age was dangerously low, only about 200ppm. It’s entirely possible to have too little CO2 in the atmosphere.
Even at 400ppm, it is still only .04% of the atmosphere... if truly accurate, it puts a more proper perspective on the CO2 debate.
Yeah. Cooler oceans can absorb more CO2. But CO2 levels have varied some on their own. But then people came along. That 400ppm isn't going to be going down anytime soon, but it's pretty certain to continue to go up. Along with global temperatures.
Scientists estimate that carbon dioxide during the last ice age was dangerously low, only about 200ppm.
Humans produce far more CO2 than volcanoes do. But, in fact, large volcanic eruptions tend to cool the planet by sending sulphates high into the atmosphere. It's a short lived effect though.
I still can not help but think society can and probably will blow a huge bundle of money on CO2 legislation and removal; only to have it "wiped out"/grossly offset by another volcano or two going off somewhere.
RIGHT BIAS These media sources are moderately to strongly biased toward conservative causes through story selection and/or political affiliation. They may utilize strong loaded words (wording that attempts to influence an audience by using appeal to emotion or stereotypes), publish misleading reports and omit reporting of information that may damage conservative causes . Some sources in this category may be untrustworthy. See all Right Bias sources.
Factual Reporting: MIXED
Notes: The New American (TNA) is a print magazine published twice a month by American Opinion Publishing Inc., a wholly owned subsidiary of the John Birch Society. Displays right wing bias in reporting and does not always follow the consensus of science. The New American is right biased and mixed factually. (7/19/2016) Updated (4/6/2017)
These sources consist of legitimate science or are evidence based through the use of credible scientific sourcing. Legitimate science follows the scientific method, is unbiased and does not use emotional words. These sources also respect the consensus of experts in the given scientific field and strive to publish peer reviewed science.
Some sources in this category may have a slight political bias, but adhere to scientific principles. Factual Reporting: VERY HIGH
Notes: New Scientist is a UK-based weekly English-language international science magazine, founded in 1956. Since 1996 it has run a website dedicated to science news and discovery. (8/20/2016)
According to some accounts, the rise in carbon dioxide will usher in a new golden age where food production will be higher than ever before and most plants and animals will thrive as never before.
If it sounds too good to be true, that’s because it is.
CO2 is the source of the carbon that plants turn into organic compounds, and it is well established that higher CO2 levels can have a fertilising effect on many plants, boosting growth by as much as a third.
However, some plants already have mechanisms for concentrating CO2 in their tissues, known as C4 photosynthesis, so higher CO2 will not boost the growth of C4 plants.
originally posted by: amazing
This ties in with pollution though. To much in the air and we get smog and can't breathe properly. The plants love it, of course. But us humans have a hard time with too much.
originally posted by: BeefNoMeat
a reply to: FyreByrd
Really - a plant food - it's an fundamental element (look up the word).
Hmmm, pretty sure carbon and oxygen are elements...carbon dioxide, not so much. Just saying.
originally posted by: pravdaseeker
Dear ATS Readers, Writers,
a reply to: FyreByrd
Thanks FyreByrd... I respect your opinions, but there is no denying plants do much better in a CO2 enriched atmosphere.
example
At that link is just one example of how many plants flourished under enhanced CO2 concentrations. The best for most of the plants in the study was around 10,000 ppm.
I am not advocating it, or wanting it, it is what it is... plants do better with higher concentrations of CO2, is it then a "food"?
Pretty vital part of photosynthesis if I recall Biology classes.
Global CO2 levels were determined over time, and the numbers are out there for those who study those things.
John Birch Society didn't invent the numbers.. Regardless of how controversial they may be in todays oddball intolerant society.
Pravdaseeker
What else was provided for those plants, besides an abundance of CO2? All the water and nutrients they required?
At that link is just one example of how many plants flourished under enhanced CO2 concentrations. The best for most of the plants in the study was around 10,000 ppm.
www.nature.com...
The effects of elevated CO2 on plants can vary depending on other environmental factors. While elevated CO2 makes carbon more available, plants also require other resources including minerals obtained from the soil. Elevated CO2 does not directly make these mineral elements more available and, as noted above, may even decrease the uptake of some elements. The ability of plants to respond to elevated CO2 with increased photosynthesis and growth may therefore be limited under conditions of low mineral availability.
No. Sulphates injected into the upper troposphere and stratosphere don't cause rain (acid or otherwise) but they do reflect sunlight back into space, decreasing radiative forcing and providing a cooling effect. But what indications are there that we are experiencing increased volcanism on a global basis?
Acid rain? Big drops in pH of rain, (no pun intended), have been recorded after increased volcanism, which we are having right now.
Cyclical effects of both Earth's orbit and its axis of rotation. Sometimes referred to as Milankovitch Cycles. www.indiana.edu...
Also said it was warmer due to well known changes in the Earth's orbit? OK, not sure what that is about, but..many previous spikes.
Yes. An asteroid impact would also be a bummer. But neither of them are under human control.
Volcanic eruptions, if bad enough could spell doom for the ice caps. By getting covered in ash, the "albedo" of the ice and snow would cause greatly increased melting, and rising sea levels.. wrong word.. but dark ash particles will cause a great increase in sun light into heat and melting of ice, etc.
Except that rising CO2 levels would seem to be the greatest factor in the warming trend we are currently experiencing. Decreasing the rate at which we produce CO2 would decrease the rate of warming. This would provide more time to adapt to changing climates, from developing technologies to deal with it to dealing with the human impacts.
Way too many factors involved for the focus being solely on CO2..