GISS Global Land-Ocean Temperature Index Vs GHCN

Guest analysis by Mark Fife This is the state of the world’s surface temperatures according to NASA’s Goddard Institute for Space Studies from 1880 through 2017. It is indeed a very bleak picture. As I see it, this is showing an exponential rise in temperatures starting at the beginning of the 20th century. Of course,…

Alarmists throw in the towel on poor quality surface temperature data – pitch for a new global climate reference network

From the Journal of International Climatology and the “if you can’t beat ’em, join ’em” department. To me, this feels like vindication. For years, I’ve been pointing out just how bad the U.S. and Global Surface monitoring network has been. We’ve seen stations that are on pavement, at airports collecting jet exhaust, and failing instruments…

New heated airport runway concept may sharply bias ‘global warming’ signal in the global climate monitoring network

Recent winter-weather related airport delays have become something that airport managers and airline executive want to solve. This story from NBC’s today show back in January 2018 highlights the issue and a potential solution: Could heated airport runways melt away your winter travel headaches? There have been thousands of flight delays and cancellations due to…

Can Temperature Adjustments Right a Wrong?

Guest Post by John Goetz Adjustments to temperature data continue to receive attention in the mainstream media and science blogs. Zeke Hausfather wrote an instructive post on the Climate Etc. blog last month explaining the rationale behind the Time of Observation (TOBS) adjustment. Mr. Hausfather pointed to the U.S. Climate Reference Network (CRN) as a…

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 site Mid-Continent International Airport. Not only was this the hottest temperature ever measured during the…

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 areas. Instead, it seems the thermometer at Sea-Tac is finally back on track, reporting temperatures…

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 the global warming signal  itself A paper just published in Theoretical and Applied Climatology finds…

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. The validity of the homogenization process is also being challenged in a talk I am…

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 Met Office (IMO) plot, and it clearly shows a gradual upward trend since the early…

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 me to think this would be good to mention it, so they can make comparisons. …

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 for years, and show a significant effect on temperature trends, just as we’ve noted in…

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 that claimed by the IPCC [0.7-0.8°C]. Here’s the part I really like:  of 67% of…

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 stations in this case)  but are not captured by climate models. The paper also showed…

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, differences that, in his words, constitute “a degree of shift of the input data of…

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 this case) should be cited in IPCC reports. It happened that yesterday Phil Jones of…

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 consider” that the global warming of the 20th century could have occurred mainly as abrupt…

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, doing some further investigation, I’ve got shots of the actual equipment and error analysis. The…

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 who has recently added another level of processing to the mix. I’ll be offering some…

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 in the construction of the US Historical Climate Network. Anthony reported on this topic in…

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 Twitter – either the hashtag #scio11 or our official account @scio11 https://scio11.wikispaces.com/Program+Suggestions This is the…

Middlesboro Kentucky: Pitch Black?

By Steven Mosher. In his august draft of Hansen2010, Dr. Hansen makes the following claim: “We present evidence here that the urban warming has little effect on our standard global temperature analysis.  However, in the Appendix we carry out an even more rigorous test. We show there that there are a sufficient number of stations…

Watts Up With Nuuk?

NEW UPDATES POSTED BELOW As regular readers know, I have more photographs and charts of weather stations on my computer than I have pictures of my family. A sad commentary to be sure, but necessary for what I do here. Steve Goddard points out this NASA GISS graph of the Annual Mean Temperature data at…