Jo Nova: The trend repeats?
The hockey stick purports to do 2 things; show the current temperature rate of increase is unprecedented and that current temperatures are unprecedented; the first is rebutted by this:
The second here, Figure 3 is good:
The Chinese monsoon paper is actually pretty interesting, but jackerman had the same instinct that I did: verify Jo Nova’s graph. He used “wood for trees” and came up with different figures than Nova reports. So did my first pass using CRU’s data set. But careful reading of Jo Nova’s graph (presented in a post titled The BOM & CSIRO report: It’s what they don’t say that matters ) shows she used the monthly data set from UK MET. So I thought I would give that a go …
So this first graph is using the same range of years as indicated in the Nova’s legend. I assume that the years begin in January and end in December.
Since the trends are obviously not replicated, I thought maybe Jo had been a little loose in her labeling and maybe 1860-1880 really meant 1860-1879 (inclusive).
Still no go. So I thought I would fish around a little to see if I could pump up the numbers in her favor (but using whole years). This replicates the red arrows a little better, but not the numbers for the trends.
I don’t know how Nova arrived at the numbers for her trends, but they don’t seem to reflect the current HadCRUT3 monthly anomalies. Remember: Trust but Verify