A new paper finds out that the main agenda (twin evils) outcome for climate scientists is wrong: The Growth & Water Use Efficiency of Two Tree Species Since 1850 (7 April 2015)
Have the two phenomena been helped or hurt by the impacts of what climate alarmists consider to be the “twin evils” of atmospheric CO2 “pollution” and CO2-induced global warming?…
Figure 1. Upper panel: Mean tree-ring δ13C-derived iWUE values over the period 1850-2005 for Douglas fir and Ponderosa Pine trees located in the U.S. Forest Service’s Northern Rockies Region. Lower panel: Mean basal-area index values over the same time period and locations within the Northern Rockies Region. Adapted from Soulé and Knapp (2015).
Of course, the horticultural industry has been on to this for decades. Hothouses and CO2 generators are in heavy use. Next, the Green blob will want to ban their use too.
Just a pity temperatures have failed to rise for nearly 20 years.