Analysis of "Media Hysteria: Climate Change ‘Heat Records’ Are a Huge Data Manipulation" Published in The Western Journal , by Jay Lehr , Tom Harris on

Three scientists analyzed the article and estimate its overall scientific credibility to be 'very low'. more about the credibility rating

A majority of reviewers tagged the article as: Cherry-picking, Flawed reasoning, Inaccurate, Misleading.

345 SHARES Share Tweet

SCIENTISTS’ FEEDBACK

SUMMARY

This op-ed published by The Western Journal, written by two members of think tanks opposed to the conclusions of climate science, makes several different types of claims about global temperatures and global temperature data. The authors attempt to argue that global temperatures are not increasing by cherry-picking some local examples of weather extremes. The headline further claims that temperature data have been “manipulated”.

Scientists who reviewed the article found that it provided no support for any of its claims, which contradict existing research and data analysis.The argument it attempts to make suffers from flawed reasoning, pretending that a cold record at some location decades ago would mean that the last few years of global average temperatures haven’t been the warmest on record.

The reviewers indicated that the content of the article does not support its headline.

You can read an archived copy of the op-ed here. You can also install the Hypothesis browser extension to read the scientists’ annotations in context.

REVIEWERS’ OVERALL FEEDBACK

These comments are the overall assessment of scientists on the article, they are substantiated by their knowledge in the field and by the content of the analysis in the annotations on the article.

Mark Richardson, Research Assistant, UCLA/NASA JPL:

This article misrepresents research, makes assertions without evidence, and hides key information that destroys its main point. It will deceive readers.

Peter Kalmus, Data Scientist, Jet Propulsion Laboratory:

This is one of the most scientifically inaccurate articles I have ever seen. The authors, apparently intentionally, provide false information and engage in extreme cherry-picking to mislead the public about climate change.

Victor Venema, Scientist, University of Bonn, Germany:

The authors do not even write about, let alone provide any evidence for, the data manipulation claim in their headline. They even admit themselves that their home-brew way of studying changes in extremes is really bad. If I were paying their salaries, I would want my money back.

Notes:

[1] See the rating guidelines used for article evaluations.

[2] Each evaluation is independent. Scientists’ comments are all published at the same time.

ANNOTATIONS

The statements quoted below are from the article; comments are from the reviewers (and are lightly edited for clarity).

[headline:] Climate Change ‘Heat Records’ Are a Huge Data Manipulation Victor Venema, Scientist, University of Bonn, Germany: This is the biggest and most ludicrous claim of the article—the claim that will be read most and shared most on social media—and the article provides no evidence the data was manipulated.

The idea that climate change is producing heat records across the Earth is among the most egregious manipulations of data in the absurd global warming debate. Victor Venema, Scientist, University of Bonn, Germany: Just to be clear, the main claim of climate science is that the global average temperature is increasing. The increase of heat waves is one of the many consequences of this. The article confusingly uses the term “record” in two meanings. The term records can be used for the observations that were recorded by meteorologists over the last centuries. The term “records” is mostly used for the highest or lowest value ever seen. In an article about the highest and lowest temperatures, it is best to avoid using the term records for the recorded data. The article also confusingly keeps on jumping between claims about local records in daily mean temperatures and claims about the long-term global mean temperature. Local temperatures are by their nature more variable than global average temperatures, daily temperatures are by their nature more variable than long-term average temperatures, records are by their nature more random than averages. With all the extra variability in the local daily records the authors can easily cherry pick a few data points that fit their narrative. What would make their case stronger would be if they actually analysed all the data, engaged with the existing scientific literature and made their own contribution to our scientific understanding by publishing a scientific paper. The cherry picking exercise in this Western Journal article does not contribute to our scientific understanding of the world.

On Feb. 7, several major newspapers carried stories of the declaration by NASA and NOAA that the past five years have been the warmest on record. Victor Venema, Scientist, University of Bonn, Germany: This is a claim about the global mean temperature and an accurate one: the last five years are the five hottest years for the period for which we have instrumental observations and likey much longer.

Sadly, these supposed experts use mathematical equations that do not jibe with reality over the past 140 years. Victor Venema, Scientist, University of Bonn, Germany: Experts tend to use mathematical equations. If the authors would like to claim an equation is wrong, they should state which one and provide a source. Otherwise it is just hot air. Peter Kalmus, Data Scientist, Jet Propulsion Laboratory: I would like to see the authors to provide the “mathematical equations” to which they refer.

The same climate experts warn that record heat is just the tip of the iceberg. Victor Venema, Scientist, University of Bonn, Germany:

That is true, climate change causes many other problems for humanity*. IPCC (2014) Impacts, Adaptation, and Vulnerability

Actual weather records over the past 100 years show no correlation between rising carbon dioxide levels and local temperatures. Victor Venema, Scientist, University of Bonn, Germany: Science only claims a relationship between carbon dioxide levels and the global temperature. Still, it would be nice if the authors would provide a source for their claim.

Did the Earth experience its highest temperature ever this year? The answer is no. Peter Kalmus, Data Scientist, Jet Propulsion Laboratory: Does this have any significant bearing on the steadily increasing ocean heat content and annual mean global surface temperature? The answer is no.

The coldest temperature ever reported was 129 degrees below zero Fahrenheit in Vostok, Antarctica, in 1983, when Carbon dioxide emissions were five times higher than in 1913. Victor Venema, Scientist, University of Bonn, Germany: In 1913 there was only one official research station in Antarctica. It was on Laurie Island in the middle of the Southern Ocean. Vostok Station was founded close to the South Pole by the Soviet Union in 1957. With the spread of weather stations the chance of a low record increases. This may be the clearest way to show that just mentioning a few records is a really bad way to study whether extreme weather has changed.

These examples all illustrate that cherry picking record high temperatures in isolated locations tells absolutely nothing about the Earth’s climate. Peter Kalmus, Data Scientist, Jet Propulsion Laboratory:

This is one of the only scientifically accurate statements in the article. Cherry-picking in general is misleading, which is why scientists—unlike these authors—take extraordinary care not to do it. (While some of the authors’ own cherry-picked records may be true, they in no way support the authors’ argument, and therefore they are contextually inaccurate.) Victor Venema, Scientist, University of Bonn, Germany:

This is a bizarre ending of this part of the article were the authors admit that their really bad method to study whether the weather becomes more extreme is a really bad method to study whether the weather becomes more extreme. Fortunately, scientist put in more effort to produce reliable knowledge. A good way to access what science knows about changes in extreme weather is the IPCC Special Report on Managing the Risks of Extreme Events and Disasters to Advance Climate Change Adaptation. The authors of this article would have saved the time of many readers had they read up on the state of the science.

The strongest heat wave ever recorded [in the US] occurred in July 1936 Victor Venema, Scientist, University of Bonn, Germany: People may know this period as the Dust Bowl, where bad land management practices produced bare soil, dust storms, crop failure, and heat waves. This affected especially the maximum temperature, the summer temperature and stations in the Dust Bowl region. Global warming is about global warming. There are other reasons why the temperature changes, but over the last century the main reason is the burning of fossil fuels. Locally, these other reasons can be significant—like the US Dust Bowl.

as time progresses and fossil fuel emissions increase, the number of record highs should increase and record lows should decrease. Peter Kalmus, Data Scientist, Jet Propulsion Laboratory: In fact, globally, record daily high temperatures are outpacing record daily lows. This is even also the case over the relatively small region of the globe we call the US. See, for example, this Climate Central article.

Concurrently a compilation of all days since 1915 when temperatures exceeded 90F shows them decreasing with time rather than increasing in Figure 2. Victor Venema, Scientist, University of Bonn, Germany: The figure again has no source, no way to check how it was computed. Days over 90F focuses on maximum temperature and summer days, the data most affected by the Dust Bowl.

the data does not support the claim that the United States is hotter than ever as a result of rising Carbon dioxide levels Victor Venema, Scientist, University of Bonn, Germany: This would be claim about the average temperature of America and would normally refer to the annual average temperature—that does not follow from summer maximum temperature records.

From 1970 until 1998 there was a warming period that raised temperatures by about 0.7 F that helped spawn the global warming alarmist movement. However, since 1998, little warming has occurred while carbon dioxide emissions continue to increase. Mark Richardson, Research Assistant, UCLA/NASA JPL: Warming rate from 1970-1998: +0.15 C/decade, 95 % confidence interval +/- 0.06 C/decade.

Warming rate from 1998-2018: +0.18 C/decade, 95 % confidence interval +/- 0.09 C/decade. (Calculated with Berkeley Earth). Odds are that warming after 1998 was faster than warming before 1998. Anyone who looks into the data and has basic analysis skills can see this, so they would not even try to imply that 1970-1998 warming was faster than post-1998 warming. The whole article uses tricks like this to invert reality, and will leave readers deeply deceived. Victor Venema, Scientist, University of Bonn, Germany: A quick look at the global temperature curve immediately shows that warming continues after 1998 at about the same rate. Source