lee wrote on Dec 22
nd, 2016 at 10:43am:
Pho Huc wrote on Dec 22
nd, 2016 at 1:54am:
The "material" you posted ascribed a ratio of carbons power as a heating agent in relationship to land clearing.
lee wrote Yesterday at 11:56am:
“Land-use changes (e.g. cutting down forests to create farmland) have led to changes in the amount of sunlight reflected from the ground back into space (the surface albedo). The scale of these changes is estimated to be about one-fifth of the forcing on the global climate due to changes in emissions of greenhouse gases.'
Ok. So 1/5 equals 20% - land use change
16% is natural forcing - Plants
We have admitted Internal Variation - no percentage.
So we have known warming non-anthropogenic of at least 36%, without Internal Variation.
So how did you come up with anthropogenic CO2 causes 80-85% of warming?
I didn't come up with those figure, You did old boy!
lee wrote on Dec 14th, 2016 at 5:21pm:
You may want to cut down the trees. Plants respire too.
'They found that, averaged over the entire globe, the evapotranspiration effects of plants account for 16% of warming of the land surface, with greenhouse effects accounting for the rest. But in some regions, such as parts of North America and eastern Asia, it can be more than 25% of the total warming.
Every little bit helps.
lee wrote Yesterday at 1:56pm:
“Land-use changes (e.g. cutting down forests to create farmland) have led to changes in the amount of sunlight reflected from the ground back into space (the surface albedo). The scale of these changes is estimated to be about one-fifth of the forcing on the global climate due to changes in emissions of greenhouse gases.'
If you posted documents that SUPPORTED you assertions you would make a much better fist of debating.
The problem with being a contortionist is sometimes you bite yourself on the ass!