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…
Category: Adjustments/Corrections
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…
Grandma Learns About Data Adjustment: A little story about how data adjustment might work in everyday life.
Note: On Thursday of this week, NOAA/NCDC will attempt to rewrite the surface temperature record yet again, making even more “adjustments” to the data to achieve a desired effect. This…
Inquiry Launched Into Global Temperature Data Integrity
The International Temperature Data Review Project London, 26 April 2015 – The London-based think-tank the Global Warming Policy Foundation is today launching a major inquiry into the integrity of the…
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.…
New Paper Confirms the Hiatus Is Not Occurring at the Poles, Undermining the Efforts of Cowtan and Way
Guest Post by Bob Tisdale Pierre Gosselin of NoTrickZone reports on a paper that confirms the slowdown in global surface warming has not been occurring at the poles. See Pierre’s…
Theory on the Pause – climate science has 'exhausted adjustment rationales'
Global Warming is real and is definitely caused by human-produced carbon . . . pencil lead, that is. Guest essay by Ralph Park Global Warming Theory – An impressive collection…
Anthropogenic Warming in the CET Record?
Guest essay by Neil Catto The CET record started in 1659 close to the minimum of the little ice age. As such, it is with no surprise that last year…
HADCRUT4 Adjustments – Discovering Missing Data or Reinterpreting Existing Data? (Now Includes September Data)
Guest Post by Werner Brozek and Just The Facts: To begin, we would like to sincerely thank Tim Osborn of the University of East Anglia (UEA), Climatic Research Unit (CRU)…
Is NOAA Wrong?
Guest Post by Willis Eschenbach On another post here on Watts Up With That, a commenter pointed out that NOAA says that September 2014 was the warmest September ever on record. The…
NASA GISS Tweaks the Short-Term Global Temperature Trend Upwards
SEE UPDATE 2 AT END OF POST Guest Post by Bob Tisdale GISS released its August 2014 global surface temperature data today. As I was preparing the graphs for the…
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…
USHCN Monthly Temperature Adjustments
Guest Essay By Walter Dnes There have been a number of posts on USHCN temperature adjustments, including 1, 2, 3, 4, 5 and 6. They have focused primarily on annual adjustments. Whilst looking into…
Practicing the Dark Art of Temperature Trend Adjustment
Did Federal Climate Scientists Fudge Temperature Data to Make It Warmer? Ronald Bailey of Reason Magazine writes: The NCDC also notes that all the changes to the record have gone…
GISS Hockey-Stick Adjustments
Guest Post By Walter Dnes: There have been various comments recently about GISS’ “dancing data”, and it just so happens that as GISS data is updated monthly, I’ve been downloading…
NOAA's temperature control knob for the past, the present, and maybe the future – July 1936 now hottest month again
Two years ago during the scorching summer of 2012, July 1936 lost its place on the leaderboard and July 2012 became the hottest month on record in the United States.…
Problems With The Scalpel Method
Guest Post by Willis Eschenbach In an insightful post at WUWT by Bob Dedekind, he talked about a problem with temperature adjustments. He pointed out that the stations are maintained,…
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…
On 'denying' Hockey Sticks, USHCN data, and all that – part 1
Part 2 is now online here. One of the things I am often accused of is “denying” the Mann hockey stick. And, by extension, the Romm Hockey stick that Mann…
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