Tag Archives: GHCN

Circularity of homogenization methods

Guest post by David R.B. Stockwell PhD I read with interest GHCN’s Dodgy Adjustments In Iceland by Paul Homewood on distortions of the mean temperature plots for Stykkisholmur, a small town in the west of Iceland by GHCN homogenization adjustments. … Continue reading

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Posted in Climate data, GHCN, Weather_stations | Tagged , , , , , | 137 Comments

GHCN’s Dodgy Adjustments In Iceland

Guest post by Paul Homewood Take a look at the two graphs above. They are both mean temperature plots for Stykkisholmur, a small town in the west of Iceland. Now take another look! The top one is the official Icelandic … Continue reading

Posted in GHCN, Weather_stations | Tagged , , | 65 Comments

Important New Paper on the Nocturnal Boundary Layer, Mixing, and Radiative Forcing as it applies to GHCN weather stations

From Dr. Roger Pielke Sr. comes word of an important new paper that shows how the air near the ground (boundary layer) is highly affected by sensitive nighttime dynamics, which show up in the Tmin of weather station data (GHCN … Continue reading

Posted in GHCN, Surfacestations paper, UHI, Weather_stations | Tagged , , , , , , , , | 65 Comments

Comparing GHCN V1 and V3

Much Ado About Very Little Guest post by Zeke Hausfather and Steve Mosher E.M. Smith has claimed (see full post here: Summary Report on v1 vs v3 GHCN ) to find numerous differences between GHCN version 1 and version 3, … Continue reading

Posted in GHCN, Weather_stations | Tagged , , , , , , , | 275 Comments

Roy Spencer’s ISH population adjusted discoveries

Readers recall that I carried a guest post from Dr. Roy Spencer on what he learned from analysing the CRUTem3 data: Spencer shows compelling evidence of UHI in CRUTem3 data. Now he has turned his attention to what I consider … Continue reading

Posted in Climate data | Tagged , , , , , , , | 33 Comments

Another GISS miss: warming in the Arctic – the adjustments are key

GHCN Temperature Adjustments Affect 40% Of The Arctic By Paul Homewood                          Before                                                           After There has been much discussion recently about temperature adjustments made by GHCN in Iceland and Greenland, which have had the effect of reducing historic temperature levels, thereby … Continue reading

Posted in Climate data | Tagged , , , , , , , | 90 Comments

An Open Letter to Dr. Phil Jones of the UEA CRU

Guest Post by Willis Eschenbach Dear Dr. Jones: You and I have been interacting, albeit at a distance, since I first asked you for your data some five years ago. I asked for your data in part because I was … Continue reading

Posted in Climategate, Opinion | Tagged , , , , , , , | 317 Comments

3% of Earth’s landmass is now urbanized

This study, from 2005, is not one I’ve covered here before, but I thought it was relevant to have a look at as a logical followup to the recent announcement from NASA at AGU that satellites have identified strong UHI … Continue reading

Posted in UHI | Tagged , , , , | 55 Comments