The other key network in the seminal Jones et al 1990 on urbanization (relied upon in AR4) is their Chinese network. The idea that China between 1954 and 1983 – the age of Chairman Mao and the Great Leap Forward – could have achieved consistency in temperature measurement that eluded the U.S. observing system (with […]
Beneath the seemingly placid world of U.S. weather co-operatives, recent analysts have found a turbulent world of changing observation times, with regime change after regime change. Hansen and Karl have been forced – unwillingly, I’m sure – to adjust past temperatures downwards. In contrast to the seemingly almost Iraqian chaos of the U.S. weather observation […]
We’ve observed the changes in GISS over the past 7 years. Jean S draws our attention to the changes in GISS temperature history since Hansen et al 1981. I’ve tried to re-plotted the current Hansen data – right frame – in the same format as Hansen et al 1981 Figure 3. This is not as […]
Gore swept into Toronto yesterday using an environmentally controversial airline on Toronto Island – a service that is opposed by friends of Toronto’s waterfront (including myself.) The departing headlines read: Heed the Goracle.
I’ve been going through the literature and data on ocean sediments looking for proxies with high resolution in the Holocene – something that I discussed a few months ago. Kim et al 2004 and Lorenz et al 2006, two articles by the same group, discuss Holocene SST changes based on alkenones. Most of their proxies […]
A couple of years ago, before I got involved in proxy studies, I was interested in the UHI question and wrote to Phil Jones to request the data used in Jones et al 1990, his study purporting to show the unimportance of urban warming. Jones said that it was on a diskette somewhere and too […]
I made a subset of HadCRU3 to cover the continental U.S. and compared it to the USHCN-2000 version.
Although the USHCN version used in Hansen’s 1999 press release seems to be expunged from official U.S. government records, it was fortunately preserved by John Daly. Jerry Brennan sent me a link to a version preserved by John Daly yesterday, from which I was able to replicate the version in the 1999 press release, as […]
According to the National Climatic Data Center (NCDC),, covered here, a new Beta version of the U.S. Historical Climatology Network will be released next year. They say that the new data set uses “recent scientific advances that better address uncertainties in the instrumental record. Because different algorithms were used in making adjustments to the station […]
On a couple of occasions, I’ve noted that near infrared water vapor parameterizations in HITRAN-1996 were incorrect and wondered about what the impact of these changes would have been on a non-retuned GCM. It looks like Collins et al JGR 2006 have done something like that – implementing HITRAN changes up to 2003. Unfortunately, they […]
Climate Audit 
"Heed the Goracle"
Gore swept into Toronto yesterday using an environmentally controversial airline on Toronto Island – a service that is opposed by friends of Toronto’s waterfront (including myself.) The departing headlines read: Heed the Goracle.