gslack
Senior Member
- Mar 26, 2010
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Salt is absolutely neccessary for life. But too much is salt, and it is a poison. Same for CO2. An atmosphere without CO2 would lead to a world with the oceans frozen over clear down to the equator. This has happened in the geological past.
An atmosphere with CO2 and CH4 added very quickly leads to adrupt climate changes, and feedback loops that poison the land and oceans, this has also happened in the past from natural causes.
Just because that we are the primary cause, does not change the laws of physics.
Two questions:
1. How many times has the "abrupt addition" of CO2 and CH4 started the poisening of land and air in the last 4.5 Billion years and how long ago was the last instance of it happening and, compared to our current climate, what was the global temperature and arrangement of the continents at the time it occurred?
If you are really interested in the answer to your questions, you would have already researched them.
First, the adrupt addition of CO2 and CH4 have happened a number of times. Most notebly in the P-T extinction event, and most recently, in the PETM event.
A23A
2. When man is a contributor of 3% of CO2 which is itself about 3% of all GHG which are as a group only a small portion of the factors that affect climate, how can you claim that those emissions are "the primary cause"?
We have added nearly 40% more CO2 to the atmosphere in the last 150 years, as you well know. We have also increased the CH4 from 700 ppb to 1800 ppb. And we have added numerous industrial GHGs, some of which are more than 20,000 times as effective of a GHG as CO2. The cumulative effect is more that equal to the equivelant of 450 ppm of CO2 right now.
150 years ago, the CO2 level stood at 280 ppm. Today it stands at 385 ppm. That is a good deal more than 3%.
Honest answers to these questions will reveal that what you are talking about has no relation to the current situation.
You call for honesty when you lie about the amount of CO2 that we have added by burning fossil fuels?
How do human CO2 emissions compare to natural CO2 emissions?
How do human CO2 emissions compare to natural CO2 emissions?
Link to this pageThe skeptic argument..."The oceans contain 37,400 billion tons (GT) of suspended carbon, land biomass has 2000-3000 GT. The atmosphere contains 720 billion tons of CO2 and humans contribute only 6 GT. The oceans, land and atmosphere exchange CO2 continuously so the additional load by humans is incredibly small. A small shift in the balance between oceans and air would cause a much more severe rise than anything we could produce." (Jeff Id)
What the science says...
The CO2 that nature emits (from the ocean and vegetation) is balanced by natural absorptions (again by the ocean and vegetation). Therefore human emissions upset the natural balance, rising CO2 to levels not seen in at least 800,000 years. In fact, human emit 26 gigatonnes of CO2 per year while CO2 in the atmosphere is rising by only 15 gigatonnes per year - much of human CO2 emissions is being absorbed by natural sinks.
Two things....
1. I can now post links...
2. Your posting of the article link above, is not exactly what the Science Journal Nature says about the Paleocene-Eocene Thermal Maximum Warming...
Carbon dioxide forcing alone insufficient to explain Palaeocene-Eocene Thermal Maximum warming : Abstract : Nature Geoscience
"Carbon dioxide forcing alone insufficient to explain PalaeoceneEocene Thermal Maximum warming
Richard E. Zeebe1, James C. Zachos2 & Gerald R. Dickens3"
Seems the science journals disagree with you...
Also CO2 gas in only 0.038% of our atmosphere. That's about 380 ppm. Some say its as high as 387 ppm now. but we will go with your 385 ppm for simplicity...
Ok 385 ppm up from 280 ppm about 150 years ago. first lets be very clear what PPM stands for... Its Parts Per Million. As in 385 parts per million. OR 0.0385% up from 0.0280% 150 years ago.... We in agreement so far? Good...
A raise of roughly about 10-10.5% or about 105 ppm from 280 to 385 right? So thats 105 ppm over 150 years resulting in a rise in temperature of about what exactly? LOL, you're kidding right? HAHAHAHA! About 1 degree??? AHAHAHA!
What don't believe it? Well better talk to your guys at Climatic Research Unit of the University of East Anglia or Hadley Center of the UK Meteorological Office. Because they say so...

notice the temp goes from around -0.4 to +0.4 thats not exactly the impression we are getting now is it... About 1 degree thats it so if CO2 is such a powerful GHG, why doesn't the data show this?