Same comment I just left over at Lucia’s:
Based solely on a quick glance, (all I have time for), the paper “Decadal Variations in the Global Atmospheric Land Temperatures” appears to be a statistical analysis, and fails to consider the processes. It also seems to fail to acknowledge that:
1. the PDO does not represent the detrended SST anomalies of the North Pacific north of 20N,
2. the AMO does represent the detrended SST anomalies of the North Atlantic,
3. and that ENSO is represented by NINO3.4 SST anomalies (not detrended)
4. that their analyses are comparing apples to oranges to pineapples.