Roman on Anomaly Trend Regression
Posted by Jeff Id on March 19, 2010
I’ve been spamming Roman M’s thread on the correct method to calculate anomaly trend. It’s a correction for an error in anomaly slope calculations by least square fit. The method of correction is laid out mathematically and in code. I do enjoy math threads, but when skeptics of AGW (If Roman even is one) make improvements in method and publish them on line, the rest of us in blogland should take notice. This is the second step forward that Roman has proposed in calculating temperature trend for a global average, in the last two weeks!! Like the combination of temeprature time series with a seasonal component posts by Roman, it is again a step forward. After reading the math,it made sense, it then required beating my head on the R code for several hours. Like good science, the result, openness and method are like a clean glass of water. No hand waiving about teleconnections or rubbish about moisture feedback is between 2 and 5 times blah, blah… It’s real science with an actual answer that is different from the standard methods of climatology.
Anyway, when I see his thread with only ten comments – half mine, it’s a shame. If you’re interested in why some of us get so excited about science and math, check it out.