As readers know, both myself and various Climate Audit readers have requested CRU station data from both the Met Office and CRU. While my initial request to CRU was refused, I asked for a reconsideration and the matter is still outstanding, as are all the other CRU requests. Under U.K. Freedom of Information Act, once […]
A few days ago, Jeff Id drew attention to a recent study profiled in sciencedaily which stated: Sea Ice At Lowest Level In 800 Years Near Greenland ScienceDaily (July 2, 2009) — New research, which reconstructs the extent of ice in the sea between Greenland and Svalbard from the 13th century to the present indicates […]
Over the past few days, we’ve discussed many peculiar aspects of Rahmstorf smoothing and centering: incorrect disclosure; seeming unawareness of what the smoothing did; unattractive properties of the triangular filter; the enhancement of “successful” prediction; opportunistic policy changes. It’s not though IPCC hadn’t turned its mind to smoothing. IPCC AR4 enunciated a sensible policy on […]
Pension funds all over the world – even university pension funds – are clamoring for the services of Rahmstorf and Associates as pension fund manager. No more Fidelity or Berkshire Hathaway. Yesterday’s men. Confused by the market? Worried about your investments? Stop your worrying. Rahmstorf and Associates’ portfolio managers will separate signal from noise using […]
I only have time to post a quick note on this interesting aspect of Rahmstorf’s diagram – how the centering of Rahmstorf et al 2007 interacts with Rahm-smoothing (now conceded by everyone except Rahmstorf to be a simple triangular filter of 2M-1 years) to enhance “successful” prediction. I noticed this effect when I did a […]
Here’s another model output oddity that I noticed from a plot and confirmed with a direct screensave. In January 2100, the SH values for an NCAR PCM run, as archived at KNMI, (expressed as an anomaly here) jumps 2.5 deg C from 0.3 deg C to 2.81 deg C, before relaxing to lower values over […]
Since the publication of Rahmstorf et al 2007, a highly influential comparison of models to observations, David Stockwell has made a concerted effort to figure out how Rahmstorf smoothing worked. I now have a copy of the program and have worked through the linear algebra. It turns out that Rahmstorf has pulled an elaborate practical […]
Continuing the petty practice of refusing to cite HS critics, Johann h. Jungclaus, writing in Nature Geoscience, “Lessons from the past millennium”, discusses the “debate about the ‘hockey-stick’ curve” without citing the critical MM articles: Knowledge of past climate evolution is essential for understanding natural climate variability. The debate about the ‘hockey-stick’ curve — a […]
Menne et al (J Clim 2009) reported that there were 62 station deletions and 59 station additions from the most recent roster (which itself had been modified from the original USHCN in the mid-1980s. Menne et al: Since the 1996 release (Easterling et al. 1996), numerous station closures and relocations again necessitated a revision of […]
Speaking of which, WBZ-TV in Boston reported on the surface stations issue here . The image looked familiar to me.
Climate Audit 