Danny, Danny, Danny.
Made me laugh.
Climate and Weather
- Thread starter espola
- Start date
Made me laugh.
Rest assured, Co2 will come down as the earth cools, and the earth will cool again,....not that it matters that much. (as far as we know)The Jurassic epoch lasted about 56 million years, and CO2 levels varied within. Most Jurassic life was in the oceans. There were dinosaurs and a lot of plant life at times during the Jurassic - but mostly the early parts of the Jurassic - when temperatures were quite warm.
Instead of just thinking about what the CO2 levels were, consider what a change in CO2 levels does. The following chart correlates changes in CO2 levels with major extinction events. While there was plenty of life during the Jurassic, it was not the same life that existed in previous epochs. New forms of life supplanted the old.
There is a pretty good argument that all of the major extinction events are associated with changes in atmospheric CO2, even the KT extinction event. The causes of the changes in CO2 levels may differ. For example, flood basalt events are likely candidates for causing the levels to rise during the Permian Extinction event, and a giant meteor is believed to have caused the KT extinction event.
To many, including myself, there is no question that fossil-fuel usage had led to an increase in atmospheric CO2 in our own time, and that our climate is changing as a result. In a time when the climate should be cooling, it gets hotter every year. That, coupled with habitat encroachment, is causing a new holocene extinction event.
You and espola are politically "sympatico".
You can take that to the bank.
Looks like the number of extinction events have gone down as the earth's C02 levels have dropped. (according to this chart)
Should we make SUV ownership mandatory?
Daniel Miller
SILVER ELITE
I agree. CO2 levels have risen and fallen dramatically. The Earth warms and cools cyclically. But I am not sure there has ever been a period in Earths history, certainly not since the KT extinction event, where climate change with such pace. Usually it takes thousands of years, in the case of Pleistocene ice ages, to tens of millions of years, in the case of Cryogenian Snowball Earth. We are seeing climate change in a space of less than 100 years.
Daniel Miller
SILVER ELITE
Pretty funny. I'm not saying that life cannot adapt to higher or lower CO2 levels. The fossil record proves it can. But changing CO2 levels does change the type of life. After every extinction event (and there are about 25 documented events) new types of life come to dominate. We would not exist except for the KT extinction event. Dinosaurs would not have existed but for the Permian extinction event. If it weren't for the Silurian extinction event, the most prolific life form might still be trilobites.
If we have another extinction event now, do you think that humans are the terrestrial life-form most likely to survive it? My vote goes to the arthropods.
EvilGoalie 21
GOLD
Right, rate of the current forcing regime, not its magnitude per se, that is distinct from past epochs. Nothing in the natural carbon cycle works fast enough to modulate.
Daniel Miller
SILVER ELITE
The terms "magnitude," "epoch," and "carbon cycle" are argot. It sounds like you have a background in the sciences. Except the word "per se," which makes you sound like a lawyer.
EvilGoalie 21
GOLD
Like others, not sure where you were going with this. If it has to do with gas/heme exchange and CO2 toxicity, it takes a lot of CO2 to prevent exchange. If its the "lots of CO2 in past atmospheres and yet all the seas didn't boil so that means that CO2 being driver of current climate change is wrong" canard keep in mind that for the geologic periods cited the sun's luminosity on the main sequence was about 5% less than current. So that's ballpark 55 W/m2. In comparison, variation in irradiance based on 11 year cycle is about 1 W/m2
EvilGoalie 21
GOLD
To paraphrase Zappa, just another barbarian with a wrench in my pocket....
Daniel Miller
SILVER ELITE
Well, watch out where the huskies go ...
George Soros has stopped his funding to the down stream internet Trolls who
daily post ignorant childish rebuttals to push down the TRUTH.
You might want cash those recent checks you received .......
Sucker..
Look no further than the " Hockey Stick "," Tree Ring " data You Liberal's have spouted .....
And all based on a False Premise.....
All the Scientists who bellied up to the Global Warming/Climate Change trough will NEVER
regain there character EVER !
I dont believe the change in global temperatures within the last 150 years are exceptional.
Read this. https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=0ahUKEwjjkeuOj7rYAhUEwFQKHVY5B_sQFgg0MAE&url=https://history.aip.org/climate/cycles.htm&usg=AOvVaw3KG0jUSnOadR7pO7-hWLBd
Perspective.
Co2 is not a pollutant, or an evil earth boiling acid.
Its an essential gas, as well as a recently honed political weapon.
Wez
DA
Only by nutters who distort the Science.
Multi Sport
DA
And you believe that all the models that show Global Warming have been done so with no political agenda in mind?
What part of that article supports your assertion?
All? No. A proper reviewed by competent reviewers would have exposed an agenda that was not supported by the observations or established scientific principles.