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…

What do three CET reference weather stations used by the Met Office have in common?

Guest essay by Tom Barr Central England Temperature stations, long considered a benchmark, have been affected by land use change and urbanisation The answer is blindingly obvious, from above: they are all subject to considerable modern local urbanisation immediately to the North, including heated greenhouses designed to replicate a Mediterranean climate. The Met Office relies…

How not to measure temperature (or climate) #97 – California’s warming air temperatures are population and site bias related

A couple of days ago, I highlighted a worst of the worst NOAA climate monitoring station in Arizona with the help of a scientist from the University of Washington. My friend Jim Goodridge, former California State Climatologist continues to be busy in his retirement, and sends this along today. He’s been tracking a group of…

Approximately 92% (or 99%) of USHCN surface temperature data consists of estimated values

An analysis of the U.S. Historical Climatological Network (USHCN) shows that only about 8%-1% (depending on the stage of processing) of the data survives in the climate record as unaltered/estimated data. Guest essay by John Goetz A previous post showed that the adjustment models applied to the GHCN data produce estimated values for  approximately 66% of…

♫ I left my UHI, in Sannn Frannncisco ♪

Apologies to singer Tony Bennett for the title. Our own “Charles the moderator” writes in with this curious picture from Weather Underground showing downtown San Francisco at about 2:15PM September 8th, 2015. The disparity of temperature just a few blocks away is quite stunning. In the two temperatures circled in the downtown area yesterday there is…

Despite attempts to erase it globally, “the pause” still exists in pristine US surface temperature data

As readers know, the recent paper Karl et al. 2015, written by the head of the National Climatic Data Center now NCEI, went to great lengths to try to erase “the pause” from the surface temperature record using a series of adjustments. Those adjustments are deemed unacceptable and criticized by some climate scientists, such as…

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…

Australian Met Office Accused Of Manipulating Temperature Records

There’s quite a row developing after a scathing article in the Australian, some news clips follow. h/t to Dr. Benny Peiser at The GWPF The [Australian] Bureau of Meteorology has been accused of manipulating historic temperature records to fit a predetermined view of global warming. Researcher Jennifer Marohasy claims the adjusted records resemble “propaganda” rather…

NOAA shows ‘the pause’ in the U.S. surface temperature record over nearly a decade

NOTE: significant updates have been made, see below. After years of waiting, NOAA has finally made a monthly dataset on the U.S. Climate Reference Network available in a user friendly way via their recent web page upgrades. This data is from state-of-the-art ultra-reliable triple redundant weather stations placed on pristine environments. As a result, these…

Weather station ‘X’

A mystery for you. This weekend (weather permitting) Willis and I will be visiting the location of this weather station in the USA. Can you guess where it is? I can assure you it is not the schoolhouse at Bodega nor is it Alfred Hitchcock’s summer house.

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…

Turning airliners into flying weather stations

From Scripps Institute New Airborne GPS Technology for Weather Conditions Takes Flight First-time demonstration led by Scripps Institution of Oceanography captures key meteorological data from aircraft, along with the potential to improve hurricane forecasting A new GPS system aboard airplanes tracks key atmospheric conditions. GPS technology has broadly advanced science and society’s ability to pinpoint…

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…

Who are you going to believe, my B-44 or your lyin eyes?

NCDC needs to incorporate information into their metadata database from four sources that they currently ignore and/or keep from the public. Guest essay by John Slayton Southern California’s San Gabriel Mountains have long been a natural habitat for scientists.  Some of their activities are well known–the observatory on Mt. Wilson and Michelson’s measurement of the…

Friday Funny – Svalbard Revisited

Guest essay by David Archibald A visit to the weather station at the airport is the highlight of any trip to Svalbard. Of course that weather station has been the subject of attention on WUWT here. Above: The Svalbard weather station at the airport Figure 1 below shows the closest point the public can now…

Unwarranted Temperature Adjustments and Al Gore’s Unwarranted Call for Intellectual Tyranny

Guest essay by Jim Steele, Director emeritus Sierra Nevada Field Campus, San Francisco State University For researchers like myself examining the effect of local microclimates on the ecology of local wildlife, the change in the global average is an absolutely useless measure. Although it is wise to think globally, wildlife only responds to local climate…