Category Archives: GHCN

On ‘denying’ Hockey Sticks, USHCN data, and all that – part 2

In part one of this essay which you can see here, I got quite a lot of feedback on both sides of the climate debate. Some people thought that I was spot on with criticisms while others thought I had … Continue reading

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Posted in Adjustments/Corrections, Climate data, GHCN, USCRN, Weather_stations | 274 Comments

How not to measure temperature part 95 – New temperature record of 102° in Wichita, but look where they measure it

Over at Weather Underground, they are all excited about a new monthly high temperature record. Christopher Burt writes: Wichita, Kansas Measures May Monthly High Temperature of 102° On Sunday, May 4th, the temperature peaked at 102° at Wichita’s official NWS … Continue reading

Posted in Climate News, GHCN, records, Weather, Weather_stations | 88 Comments

Seattle’s climate instantly cools 1.5 degrees

This is interesting, and of course it goes hand-in-hand with what I have been saying for years. Scott Sistek, of KOMO News/Weather reports: ============================================================= For several years the thermometer at SeaTac airport has been reporting temperatures 1-3 degrees above surrounding … Continue reading

Posted in Climate data, GHCN, records, Weather, Weather_stations | 113 Comments

CRU produces something useful for a change

World temperature records available via Google Earth Climate researchers at the University of East Anglia have made the world’s temperature records available via Google Earth.

Posted in Climate data, GHCN, Weather_stations | 134 Comments

Important study on temperature adjustments: ‘homogenization…can lead to a significant overestimate of rising trends of surface air temperature.’

From the “we told you so” department comes this paper out of China that quantifies many of the very problems with the US and global surface temperature record we have been discussing for years: the adjustments add more warming than … Continue reading

Posted in Adjustments/Corrections, Climate data, GHCN, Weather_stations | 195 Comments

Claim: ‘climate change’ caused more deaths in Stockholm – but it may be due to flawed methodology

This is one of those publications where I look at what was done in the paper and just shake my head in disbelief. For starters, according to the data listed in the SI, the supposed extra deaths due to climate … Continue reading

Posted in Climate data, GHCN, Weather_stations | Tagged , , , , | 189 Comments

The Elusive Absolute Surface Air Temperature (SAT)

Here’s an interesting Q&A on issues with trying to determine the SAT of the Earth that I have not seen before. There’s a surprise at the end as to who wrote it.

Posted in Climate data, GHCN, Temperature, Weather_stations | Tagged , , | 91 Comments

When it comes to new high temperature records, ‘shoot first, ask questions later’

Readers may recall my investigation over the weekend of an announcement by the Danish Meteorological Institute (DMI) about a new all-time high temperature record set in Greenland that was subsequently picked up by the Capital Weather Gang at the Washington … Continue reading

Posted in GHCN, records, Weather, Weather_stations | Tagged , , , , , , | 46 Comments

Nighttime heat waves on the increase in Pacific NW

More examples of the nighttime heat sink effect of UHI. Asphalt, concrete, bricks and other infrastructure holds the energy from daytime solar insolation and releases it at night as LWIR. Anyone who has ever stood next to a sun illuminated … Continue reading

Posted in GHCN, heat wave, Weather, Weather_stations | Tagged , | 73 Comments

Central Park in USHCNv2.5 (October 2012) magically becomes cooler in July in the Dust Bowl years

By Joseph D’Aleo, CCM Remember this story long ago on New York’s Central Park multiple very different data sets to which Steve McIntyre responded here. McIntyre wrote then: …has the temperature of New York City increased in the past 50 … Continue reading

Posted in Climate data, GHCN, NCDC, NOAA, Weather_stations | Tagged , , , , , | 56 Comments

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

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

The heat is on: the UK SurfaceStations effort

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

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

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

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

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

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

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

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

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.

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

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

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

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

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

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

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”

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

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

Apropos today – Turkey weather station

No, not CRS stuffing. But, an odd weather station in Adana, Turkey.

Posted in GHCN, Weather_stations | 30 Comments

GHCN V3 temperature data errors spotted within a day of release

From the Inconvenient Sceptic, word that the new Global Historical Climatological Network (GHCN) Version 3 may not have significant quality control. He writes: I have been looking at tweaking the blended temperature set that I have been using. My intent … Continue reading

Posted in Climate data, GHCN, Weather_stations | 48 Comments

“Gross” Data Errors in GHCN V2. for Australia

UPDATE: 11/11/10 An errata has been posted, see the end of this essay – Anthony Guest post by Ed Thurstan of Sydney, Australia Synopsis This study shows that the NOAA maintained GHCN V2 database contains errors in calculating a Mean … Continue reading

Posted in Climate data, GHCN, Weather_stations | 96 Comments

Metadata fail: 230 GHCN land stations actually in the water

Why is this important? Well if you are calculating UHI for stations by looking at satellite images of nightlights, like GISS does (see my post on it at CA) , you’ll find that there’s generally no city lights in the … Continue reading

Posted in GHCN, Weather_stations | 96 Comments

Phil Jones and the Chinese weather station corruption

WUWT readers may recall the bizarre saga of Douglas Keenan’s attempt to bring the research data of CRU’s Dr. Phil Jones and SUNY’s Dr. Wei Chyung Wang to sunlight, which I’ve covered here and here. At issue, is the metadata … Continue reading

Posted in GHCN, IPCC, UHI, Weather_stations | 66 Comments