Temperature of the Earth – Why is the Southern Hemisphere Cooling?

A new paper from Xu and Powell, “Uncertainty of the stratospheric/tropospheric temperature trends in 1979–2008: multiple satellite MSU, radiosonde, and reanalysis datasets” is analysed by Willis Eschenbach at


The interesting question is why is the southern hemisphere cooling – If CO2 is distributed evenly there should be consistent warming – and aren’t the poles meant to show the most warming?