With large population, more cars are used (even if shared
) - thus more gases emitted.
Mitigation does not require pre-industrial revolution levels.
Then the effects would be MINIMAL, just like our current contributions ( 0.0014664%
) of CO2 to the atmosphere.
http://www.dhammawheel.com/viewtopic.ph ... te#p118963
http://www.skepticalscience.com/human-c ... ssions.htm
ftp://ftp.cmdl.noaa.gov/ccg/co2/trends/ ... an_mlo.txt
The living beings at that time had millions of years to evolve to those conditions, not decades as we a about to force upon this great Earth.
And living beings will have to evolve today as they did millions of years ago. Do you expect CO2 levels to keep linearly increasing year after year?
Even if CO2 levels got higher, is it certain doom? No. Dinasaurs and plants lived quite well with 1,000ppm-7,0000ppm and temperatures DID NOT crash through the ceiling, meaning that there are some mechanism that prevents earth warming.
if all other varibles are held constant, increasing CO2 in the atmosphere will increase temperature.
When CO2 levels were 7,000 the temperature was only 10C higher.
sources of the chart writte
Look at the trend of black line, CO2. It is incorrect to call it trending up and being catastrophic.
I'm begging: Please cite sources!!
Temperature after C.R. Scotese http://www.scotese.com/climate.htm
CO2 after R.A. Berner, 2001 (GEOCARB III)
Interestingly, CO2 lags an average of about 800 years behind the temperature changes-- confirming that CO2 is not the cause of the temperature increases.
Historical Isotopic Temperature Record from the Vostok Ice Core
The data available from CDIAC represent a major effort by researchers from France, Russia, and the U.S.A.
1) Vostok ice core: a continuous isotope temperature record over the last climatic cycle (160,00 years).
Jouzel, J., C. Lorius, J.R. Petit, C. Genthon, N.I. Barkov,
V.M. Kotlyakov, and V.M. Petrov. 1987.
2) Extending the Vostok ice-core record of palaeoclimate to the penultimate glacial period.
Jouzel, J., N.I. Barkov, J.M. Barnola, M. Bender, J. Chappellaz, C. Genthon, V.M. Kotlyakov, V. Lipenkov, C. Lorius, J.R. Petit, D. Raynaud, G. Raisbeck, C. Ritz, T. Sowers, M. Stievenard, F. Yiou, and P. Yiou. 1993.
3) Climatic interpretation of the recently extended Vostok ice records.
Jouzel, J., C. Waelbroeck, B. Malaize, M. Bender, J.R. Petit, M. Stievenard, N.I. Barkov, J.M. Barnola, T. King, V.M. Kotlyakov, V. Lipenkov, C. Lorius, D. Raynaud, C. Ritz, and T. Sowers. 1996.
Climate Dynamics 12:513-521.
4) Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica.
Petit, J.R., J. Jouzel, D. Raynaud, N.I. Barkov, J.-M. Barnola, I. Basile, M. Bender, J. Chappellaz, M. Davis, G. Delayque, M. Delmotte, V.M. Kotlyakov, M. Legrand, V.Y. Lipenkov, C. Lorius, L. Pepin, C. Ritz, E. Saltzman, and M. Stievenard. 1999.
Nature 399: 429-436.