Made Up Horsesh*t

clipped from ace.mu.nu Amusingly, Wegman showed that replacing Mann's principle components estimates with repeated samples of random white noise continued to produce the same hockey stick shape. Now, if you've been following this, Mann's entire temperature reconstruction method rests on knowing (observing) recent periodic global temperatures, y. Quibbling about principle components aside, that's the dependent variable in the backcasts. But as is now becoming increasingly plain, y was constructed from an undocumented process that took raw ground station data and ran it through a black box that included smoothing, filtering, inference, manipulation, baling wire, glue and the juice of one whole lemon. This is what the CRU people are calling "valued added homogenized data." Or what normal people call "made up horseshit." It's also the temperature data that dozens, if not hundreds of AGW studies are based on.