Tag Archives: storch

von Storch et al 2004 in IPCC AR4

It’s interesting to see what’s been changed between the Second Draft and AR4 as it went out the door, and compare that to comments. von Storch et al 2004 argued that the low-frequency variance of reconstructions wsa under-estimated, a point with which I agree (although it’s a different point about whether these reconstructions are biased […]

Benchmarking from VZ Pseudoproxies

Von Storch et al 2004 advocated using climate models to generate pseudoproxies to test the properties of proposed multivariate methods. Hardly unreasonable. I might argue that these are long-winded ways of generating proxy series with certain kinds of temporal and spatial covariance structures, but there’s much to be said for testing methods on some standard […]

Detrended in Amherst

Wahl et al [2006 ] fulminated as follows : The VS04 results have been interpreted to cast serious doubt on the MBH reconstruction. … However, these results are in large part dependent on a detrending step not used by MBH, which is physically inappropriate and statistically not required. The take-away message for the climate community […]

Variability: von Storch et al [2004]

Von Storch et al. [2004] argued that the reduced variability of MBH and Jones et al [1998] was possibly due to the use of inverse regression. This hypothesis has received a fair of attention as a rival candidate for the microscopic honor of breaking the hockey stick. I obviously think that our analysis in terms […]

Von Storch and the Mighty Ducks

In the ES&T article, Jerry Mahlman, rather than using ad hominem techniques like discussing biases in principal components methodology, spurious significance of RE statistics or the validity of bristlecone pines as temperature proxies, described us simply as "quacks". We start our consideration of the use of the technical term "quack" in climate science through the […]

Neue Zürcher Zeitung (Swiss) Coverage

An interesting take on the controversy from the leading Swiss newspaper.