Category Archives: Jones et al 1990

FOI: The “Final” Answer on Jones et al 1990

I wrote again on Apr 17, 2007 on my FOI request observing that part (B) of my FOI request had not been answered: the identification of the stations used as comparanda in the calculations of Jones et al 1990. Thank you for your courtesy and attention in this matter, which has successfully resolved part (A) […]

CRU on Rural Data Exclusion

In their “explanation” of why Chinese rural data is not included in CRU, Jones says: None of the rural data (because of the annual resolution) entered subsequent versions of the Climatic Research Unit temperature database. This is obviously untrue as the “rural” sites in TR055 from which the Jones et al data derived had the […]

Gridcell 47.5N 97.5E: Mongolia

Here’s another gridcell where CRU has truncated high early values. This is the gridcell that contains the important Jacoby Mongolian tree ring series. If untruncated gridcell information is used, then the ring width chronology has a negative correlation to gridcell temperature. What a swamp.

Gridcell 42N, 112E Huhehaote

Here’s another strange CRU gridcell in which warm early values of Huhehaote aren’t used.

HadCRU3, GHCN and China

A couple of days ago, I reported on the comparison of Jones et al 1990 data to the TR055 data archived at NCDC, noting that the data was the same for all but one series. I’ve now been comparing the TR055 versions to GHCN v2 and HadCRU3 and noticing some puzzling aspects to both GHCNv2 […]

Jones et al 1990, TR055 and GHCN

I have collated the Jones et al 1990 temperature data against annual average data from the TR055 data set, reviewing all 84 plots in the format shown below. Here is a plot for Shanghai. The Jones et al 1990 version was plotted first in black and the annual average from TR055 secondly in red. If […]

Freedom of Information – Jones et al 1990

I’ve reported here on my progress with UEA in obtaining identification of the sites used in Jones et al 1990, a study of the urban heat island effect. [Update – the Jones et al data was posted up here. ] I initially inquired a couple of years ago as I mentioned here. I sent an […]

Jones and the Great Leap Forward #2

I discussed the China network in Jones et al 1990 which is still cited as key evidence against UHI having a material effect on temperature estimates (even in IPCC 4AR). Shortly after Jones et al was published, Wang et al. 1990 ( W-C Wang, Z, Zeng and T. Karl, Urban Heat Islands in China, 1990. […]

East Anglia Refusal Letter

Last week, I reported on my progress (or rather lack of progress) in identifying the stations used in Jones et al 1990 on urban heat islands. Here’s the next episode.

FOI Request to Phil Jones

Some feedback on my request for the sites used in Jones et al 1990 (no data):