(apologies for the yellow line) Source here.
From Watts et al future submission….. starting at line 739.
By way of comparison, the University of Alabama Huntsville (UAH) Lower Troposphere CONUS trend over this period is 0.25°C/decade and Remote Sensing Systems (RSS) has 0.23°C/decade, the average being 0.24°C/decade. This provides an upper bound for the surface temperature since the upper air is supposed to have larger trends than the surface (e.g. see Klotzbach et al (2011). Therefore, the surface temperatures should display some fraction of that 0.24°C/decade trend. Depending on the amplification factor used, which for some models ranges from 1.1 to 1.4, the surface trend would calculate to be in the range of 0.17 to 0.22, which is close to the 0.155°C/decade trend seen in the compliant Class 1&2 stations.
There’s been a big row about this in the past among some but it never made smashing headlines in other places. You see, satellite temp trends are suppose to be amplified more than the surface temps. But, they never could figure out exactly how much because the surface temp trends were the same or more than the satellites.
For those with difficulty about how this is worded, the surface temps trends, we should be able to multiply them by some number which would give us the Lower Troposphere temp trends. In this case, a more precise number comparing Watts’ findings is 1.5/1.6 range. This is a bit higher than what was previously expected, but not far from the 1.4 range.
This is where I think the conversation will head.