Doesn't have research regarding age of climate change? I would like to ask all researchers how old climate change is?Is there origin ? Rsearch based answers swill be more appreciated.
Ww
Which climatic change are you asking about ? Already in the Jurassic by ca. 200 Myr there are evidences of climatic changes at relatively short scale (1-10 kyr)
Dear Ramesh,
as Marc already indicated there have been climate change impacts all time in the earth's history, usually caused by volcano activites or changed sun intensity. Examples for historical climate changes are the Medieval Warm Epoch (800 to 1200 AD) and the Little Ice Age (1400 to 1800 AD), (Scuderi, 1993). In general, climate changes prior to the Industrial Revolution in the 1700s are explained by natural causes (IPCC, 2013). The current climate change is ascribed to the beginning of industrialisation at least 150 years ago, and infact the glaciers in the European Alps have lost half of their volume since 1850 (Hardy, 2003). According to Knorr (2009), annual emissions of CO2 by human use of fossil fuels rose from 3 mil t of C (11 mil t of CO2) in 1751 to 54 mil t of C (198 mil t of CO2) in 1850 (I attached that ublication). Some more detailed information about the historical climate change is given here: Hardy, T.: Climate change - Causes, Effects and Solutions, Wiley, 2003. By the way, we see the impact of the indutrialisation not only in the climate, but also in the water resources when we have a look to find natural background values (means values without any anthropogenic impact) especially in historically long term active mining areas.
Best regards,
Petra
Another way of answering this question is:
the impact of increasing amounts of fossil fuels being burnt since industrialisation is already known by scientists since 1896 (see attached). One therefore could say that climate change as a global problem now is 120 years old!
http://www.rsc.org/images/Arrhenius1896_tcm18-173546.pdf
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