Category Archives: GHCN

Circularity of homogenization methods

Posted on October 15, 2012 by

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

Posted on October 15, 2012 by

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

The heat is on: the UK SurfaceStations effort

Posted on October 10, 2012 by

They say “imitation is the sincerest form of flattery”, so color me flattered. I’ve been remiss in writing about this effort by Roger Tattersall (aka Tallbloke) and his colleague Tim Channon, but a tip from WUWT reader David Schofield brought … Continue reading →

Posted in GHCN, UHI, Weather_stations | Tagged , , , | 102 Comments

A new paper showing how UHI and energy consumption are linked to long-term temperature change in China

Posted on October 2, 2012 by

Dr. Roger Pielke Sr. highlighted this major new paper in JGR yesterday, I consider it important as it relates to the works I’m doing on station siting. The key points of the paper are supportive of what I’ve  been saying … Continue reading →

Posted in GHCN, Temperature, UHI, Watts et al 2012, Weather_stations | Tagged , , , , | 33 Comments

New paper blames about half of global warming on weather station data homogenization

Posted on July 17, 2012 by

From the told ya so department, comes this recently presented paper at the European Geosciences Union meeting. Authors Steirou and Koutsoyiannis, after taking homogenization errors into account find global warming over the past century was only about one-half [0.42°C] of … Continue reading →

Posted in Climate data, GHCN, Weather_stations | Tagged , , , , , , , , | 225 Comments

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

Posted on July 12, 2012 by

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

Posted on June 22, 2012 by

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

Chiefio Smith examines GHCN and finds it “not fit for purpose”

Posted on June 21, 2012 by

E.M. Smith over at the blog Musings from the Chiefio earlier this month posted an analysis comparing versions 1 and 3 of the GHCN (Global Historical Climate Network) data set.  WUWT readers may remember a discussion about GHCN version 3 … Continue reading →

Posted in Climate sensitivity, Climate_change, GHCN, Global warming, statistics | 120 Comments

Phil Jones gives a talk at KNMI in De Bilt – meanwhile temperature and paleo researchers are still blowing off data requests

Posted on June 1, 2012 by

From  Marcel Crok at De staat van het klimaat: Phil Jones: ‘Contact NMS’s for raw data’ Over at Climate Audit there is renewed interest in data availability with McIntyre asking whether journals that don’t guarantee data archiving (The Holocene in … Continue reading →

Posted in Climate data, GHCN, Paleoclimatology, Weather_stations | Tagged , , , , , , , | 114 Comments

RDU’s paint by numbers temperature and climate monitoring

Posted on May 3, 2012 by

After reviewing over 1000 USHCN stations in the United States as part of my surfacestations.org project, I have often thought that I can’t find anymore surprises in the train wreck that is our surface observing network. Apparently I’m wrong. Can … Continue reading →

Posted in Climate data, GHCN, Land use land cover change, Weather_stations | Tagged , , , , , , , , | 58 Comments

An update on my Climate Reference Network visualization project

Posted on April 7, 2012 by

Readers may recall that when Peter Gleick first sent out the stolen Heartland board documents and the fake document to give the story “legs”, there was a mention in there of a project that I asked Heartland to help me … Continue reading →

Posted in Climate data, Fakegate, GHCN, Michael E. Mann, NASA GISS, NOAA, Weather_stations | Tagged , , , , , , , , | 93 Comments

Abrupt changes in GHCN station-level temperature records contradict the anthropogenic global warming (AGW) claims.

Posted on January 5, 2012 by

Guest post by Jens Raunsø Jensen Preamble Inspired by a statement by Dr. Kevin Trenberth in the e-mails referred to as Climategate 2.0 (#3946 discussed here), it is hoped that climate scientists will have “an open enough mind to even … Continue reading →

Posted in Climate data, GHCN, Weather_stations | Tagged , , , , , , , , | 205 Comments

The Impact of Urbanization on Land Temperature Trends

Posted on December 5, 2011 by

by Zeke Hausfather , Steven Mosher, Matthew Menne , Claude Williams , and Nick Stokes [Note: this is an AGU poster displayed at the annual meeting, available here as a PDF. I’ve converted it to plain text and images for … Continue reading →

Posted in GHCN, UHI, Weather_stations | 134 Comments

Houston, we have a temperature problem

Posted on August 30, 2011 by

Eric Berger writes (excerpt below) at the Houston Chronicle “SciGuy” blog about the wicked hot record breaking temperatures people were getting in Houston on their iPhones. Turns out the whole issue is over station siting. While he located the station, … Continue reading →

Posted in GHCN, records, Weather_stations | 35 Comments

How not to measure temperature in the GHCN, part 1

Posted on August 29, 2011 by

Yes, it’s back. Dr. Roger Pielke Sr.  and I have started looking at the GHCN to document the siting quality of surface stations that measure climate in the Global Historical Climatological Network (GHCN), the darling of NCDC’s Dr. Thomas Peterson … Continue reading →

Posted in GHCN, Weather_stations | 44 Comments

Pielke Sr. on the quality of global surface stations

Posted on August 14, 2011 by

Quality Of Global Climate Surface Observing Sites By Dr. Roger Pielke Sr. Anthony Watts, Evan Jones and the numerous outstanding volunteers have provided us with an effective, land breaking documentati0n of the quality of siting of surface observations that are used … Continue reading →

Posted in GHCN, Weather_stations | 56 Comments

Analysing the complete hadCRUT yields some surprising results

Posted on August 4, 2011 by

From The Reference Frame, 30 July 2011 via the GWPF HadCRUT3: 30% Of Stations Recorded A Cooling Trend In Their Whole History The warming recorded by the HadCRUT3 data is not global. Despite the fact that the average station records … Continue reading →

Posted in Climate data, GHCN, Weather_stations | Tagged , , , , , | 111 Comments

Little Ice Age thermometers – History and Reliability

Posted on May 23, 2011 by

This is an excerpt of a larger document by Tony Brown (Tony B on WUWT and other blogs) that he will be happy to make available. He writes: Some months ago I passed you a preliminary study of mine into … Continue reading →

Posted in Climate data, GHCN, measurement, Weather_stations | 51 Comments

NCDC’s Dr. Thomas Peterson: “It’s a knife fight”

Posted on January 16, 2011 by

This is a row screencap from this Twitter page: http://twitter.com/scio11 It comes from the January 13-16th, 2011 Science Online conference held in the Research Triangle Park in Durham. Details at these URL’s http://scienceonline2011.com/ http://scio11.wikispaces.com/ You can also follow us on … Continue reading →

Posted in Climate data, Climategate, GHCN | Tagged , , , , , , , | 89 Comments

Australia’s white summer, Monbiot’s red fury

Posted on December 20, 2010 by

Australia swaps summer for Christmas snow Excerpts from Physorg.com Snow and ice covering buildings and cars on December 19, 2010 at Mount Hotham,Victoria, as snow fell in Australia. The usual hot and summery December weather was replaced in parts by … Continue reading →

Posted in ENSO, GHCN, Weather_stations | Tagged , , , , | 172 Comments