If anyone would like to debate me on this, here is your opportunity.
Here are the facts.
Human activity has contributed to the rise in CO2 levels over the last 150 years or so. This increase, however, is also somewhat attributed to nature as the ocean is no longer "absorbing" as much CO2.
CO2 is the "largest" of the minor greenhouse gases; the only major greenhouse gas is H2O. Let me qualify what I mean when I say "largest". It has a greater "warming" effect than any other minor GHG.
Most GHG's absorb solar radiation that is reflected from the earth on its way back out to space. O3 is an exception, where it absorbs UV radiation on its way in to Earth. Even though the O3 layer is so thin it actually absorbs the vast majority of the radiation that it is capable of absorbing. Just like O3, CO2 absorbs the vast majority of the radiation that it is capable of absorbing. So atmospheric increases can only absorb a tiny amount more since the majority is already absorbed.
The most sophisticated climate modelling in the world attributing the rise in temperature to greenhouse activity contributes 47% of it to the CO2 increase (NASA); in fact NASA has been telling us that Methane and Black Carbon are large contributors for well over a decade. It most certainly is not 100% CO2 according to any serious climatologist.
We're still coming out of an ice-age; temperatures should be rising some amount anyway.
There is strong evidence that in the Medieval Warm Period temperatures rose as swiftly as they are presently and achieved a substantially higher global mean temperature then is at present; especially evidenced by the world's melting glacier's which have not yet retreated to MWP levels, and the fact that Viking remains (land cultivation, graves, etc) from the MWP remain under permafrost on Greenland to this day.
I'm a "global warming sceptic". And like most GWS's, I believe that CO2 has increased temperatures over the past 100 years, we (sceptics) all do. Yes, that's right, we believe the same thing that most global-warming alarmist climate scientists do. Only difference is I believe CO2 to be responsible for between 10-30% of the trend (most likely about 15%); whereas your climate alarmists generally believe it's anything from 40%-100%. NASA's scientists seem to think it's about 47%, and politicians like Al Gore like to say it's 100% and "truth".
If you want to have a good-faith discussion please reply. Please don't troll, I've studied the science and followed it for about 7-8 years, and my favourite climatologist is Richard Lindzen, a well-respected "mainstream" climatologist who contributed to the IPCC papers and shares the same view that I do as to CO2's role in climate change.
Here are the facts.
Human activity has contributed to the rise in CO2 levels over the last 150 years or so. This increase, however, is also somewhat attributed to nature as the ocean is no longer "absorbing" as much CO2.
CO2 is the "largest" of the minor greenhouse gases; the only major greenhouse gas is H2O. Let me qualify what I mean when I say "largest". It has a greater "warming" effect than any other minor GHG.
Most GHG's absorb solar radiation that is reflected from the earth on its way back out to space. O3 is an exception, where it absorbs UV radiation on its way in to Earth. Even though the O3 layer is so thin it actually absorbs the vast majority of the radiation that it is capable of absorbing. Just like O3, CO2 absorbs the vast majority of the radiation that it is capable of absorbing. So atmospheric increases can only absorb a tiny amount more since the majority is already absorbed.
The most sophisticated climate modelling in the world attributing the rise in temperature to greenhouse activity contributes 47% of it to the CO2 increase (NASA); in fact NASA has been telling us that Methane and Black Carbon are large contributors for well over a decade. It most certainly is not 100% CO2 according to any serious climatologist.
We're still coming out of an ice-age; temperatures should be rising some amount anyway.
There is strong evidence that in the Medieval Warm Period temperatures rose as swiftly as they are presently and achieved a substantially higher global mean temperature then is at present; especially evidenced by the world's melting glacier's which have not yet retreated to MWP levels, and the fact that Viking remains (land cultivation, graves, etc) from the MWP remain under permafrost on Greenland to this day.
I'm a "global warming sceptic". And like most GWS's, I believe that CO2 has increased temperatures over the past 100 years, we (sceptics) all do. Yes, that's right, we believe the same thing that most global-warming alarmist climate scientists do. Only difference is I believe CO2 to be responsible for between 10-30% of the trend (most likely about 15%); whereas your climate alarmists generally believe it's anything from 40%-100%. NASA's scientists seem to think it's about 47%, and politicians like Al Gore like to say it's 100% and "truth".
If you want to have a good-faith discussion please reply. Please don't troll, I've studied the science and followed it for about 7-8 years, and my favourite climatologist is Richard Lindzen, a well-respected "mainstream" climatologist who contributed to the IPCC papers and shares the same view that I do as to CO2's role in climate change.