Friday, March 23, 2012

Land cover/use change

Above is a graphical representation of how land masses have had their cover type and uses changed over the course of the last few hundred years, especially in the last one hundred years. 

At this time, I will remind readers that the only reasons CO2 is being blamed for AGW is that
- it is known to be a "greenhouse" gas,
- it has been increasing in the atmosphere, especially in the last 100 years and
- there has been a global temperature (GMST) increase of less than two degrees in that time period as well. 

So there is a moderate (not a strong) co-relation between atmospheric CO2 levels and GMST, plus the "greenhouse" theory plus model outputs and there's your Global Warming scaremongering about the CO2 strawman.  

Many alarmist climate "scientists" think CO2 is the single most important forcing that's causes global warming/climate change/climate disruption/whatever have you.  But there is growing contingent of science that think that Land cover/use change has as large or larger impact on the climate as CO2 (RPS has been banging this drum forever with little impact).  It has effects on albedo, wind patterns, boundry layers, carbon sink/source values, etc. and etc.   Definitely not an insignificant role.

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