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…

How not to measure temperature (or climate change) #96

From the “global warming data looks better with heat-sinks and air conditioners” department. Dr. Mark Albright, of the University of Washington writes: Here is a great example of how NOT…

How not to measure temperature, British facepalm edition

I had to share this “laugh out loud” moment from Bishop Hill and the photo of this weather station. Andrew Montford writes:   Settled science Much amusement is to be…

Corrupted Australian Surface Temperature Records

Older records may be fragile but was diligence any better in recent decades? Guest essay by Bob Fernley Jones Background: Out of over 20,000 Bureau of Meteorology (BoM) weather stations…

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.…

Winners and losers in the GHCN estimation derby

Guest essay by John Goetz As noted in an earlier post here, approximately 66% of the GHCN record is estimated after processing by the GHCN adjustment models. In the current…

Approximately 66% of global surface temperature data consists of estimated values

Summary of GHCN Adjustment-Model Effects on Temperature Data Guest essay by John Goetz As the debate over whether or not this year will be the hottest year ever burns on,…

♫ 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…

The journalistic self-immolation of Newsweek's Zoë Schlanger

Every once in a while a new reporter arrives onto the climate scene that immediately thinks they know everything there is to know about climate, and therefore doesn’t need to…

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…

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.…

Independent Review Discovers that NCDC Fumbles Data Handling in GHCN Climate Data

Guest essay by Bob Koss Being an old retired guy with time on my hands, this summer I decided to find out just how well GHCN-Monthly follows their own methodology…

BoM's bomb on station temperature trend fiddling

From Jo Nova: BOM finally explains! Cooling changed to warming trends because stations “might” have moved! It’s the news you’ve been waiting years to hear! Finally we find out the…

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…

Something Detroit has in abundance – UHI

Detroit gets a lot of negative press these days, mainly because it has become a poster child for badly managed cities and decline, but it does seem to have UHI…

Analysis of Temperature Change using World Class Stations

Guest essay by Ron Clutz This is a study to see what the world’s best stations (a subset of all stations I selected as “world class” by criteria) are telling…

I wonder how this dedicated weather observer feels about having his readings adjusted by NCDC?

In my travels surveying weather stations around the United States, I met many dedicated observers like this one. It is sad indeed that their painstakingly recorded data by observers like…

NCDC responds to identified issues in the USHCN

The NCDC press office sent an official response to Politifact, which is below. The NCDC has not responded to me personally, I only got this by asking around. I’ve provided…

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…

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…

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…

Spiking temperatures in the USHCN – an artifact of late data reporting

Correcting and Calculating the Size of Adjustments in the USHCN By Anthony Watts and Zeke Hausfather A recent WUWT post included a figure which showed the difference between raw and…

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…

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…