Analysis: Climate data has been altered for decades to promote ‘global warming’ fears

In 1990, Tom Karl and the IPCC showed that Earth was much warmer 900 years ago, during the Medieval Warm Period (MWP.)

1990 IPCC Report

But by 1995, climate scientists had made the decision to get rid of the inconvenient MWP.

U.S. Senate Committee on Environment and Public Works

By 2001, Michael Mann and the IPCC followed up on their plans, and eliminated the MWP.

IPCC Third Assessment Report – Climate Change 2001

The 1990 IPCC report also had detailed Arctic sea ice satellite data from NOAA, which showed that Arctic sea ice extent was much lower in 1973 than in 1979.

1990 IPCC Report

Government scientists also knew in 1985 that Arctic sea ice extent was much lower in the 1940’s and 1950’s than it was in 1973.

Projecting the climatic effects of increasing carbon dioxide (Technical Report) | SciTech Connect

The pre-1979 Arctic sea ice data was extremely inconvenient, so NOAA simply made it disappear. They now start their graphs right at the peak year in 1979. I have been trying to obtain the pre-1979 IPCC satellite data from NOAA for over six months, and they have been “unable to locate it.”

In the 1950’s scientists were well aware that the “thin crust” of Arctic sea ice was disappearing, and predicted an ice-free Arctic within a generation.

The Changing Face of the Arctic; The Changing Face of the Arctic – The New York Times

Scientists were also aware that by 1970 Arctic sea ice was getting much thicker and more extensive.

U.S. and Soviet Press Studies of a Colder Arctic – The New York Times

This prior warmth and subsequent cooling in the Arctic was inconvenient, so NOAA and NASA made it disappear.

Data.GISS: GISS Surface Temperature Analysis

In 1985 Phil Jones At CRU showed a large global warming spike around 1940, followed by about 0.5C cooling.

Projecting the climatic effects of increasing carbon dioxide (Technical Report) | SciTech Connect

The 1940’s spike was inconvenient for Phil Jones and the rest of his cohorts, so they discussed how to get rid of it.

And that they did. They have completely eliminated the 1940’s blip and subsequent cooling. It no longer exists in the temperature record.

NASA has also removed the inconvenient 1940’s warmth and subsequent cooling, just as scientists discussed doing.

1981 version2017 version

In 2013, the post-2000 global warming pause was central to the IPCC report.

Global warming pause ‘central’ to IPCC climate report – BBC News

This was inconvenient to NOAA and NASA, so Tom Karl and Gavin Schmidt made it disappear.

Evidence against a global warming hiatus? — ScienceDaily

There was no pause « RealClimate

This fraud was so blatant that even NOAA’s principal scientist John Bates, and PennState hockey stick fraudster Michael Mann called it out.

Climate scientists versus climate data | Climate Etc.

Nature Climate Change February 1, 2016

In 1990, NASA determined that satellite temperatures were more accurate than surface temperatures, and should be adopted as their standard.

01 Apr 1990 – EARTHWEEK: A DIARY OF THE PLANET Global Warming

Satellite data does not give NASA the answer they want, so the US space agency ignores satellites, and instead releases fraudulent surface temperatures.

Wood for Trees: Interactive Graphs

The fraud is not limited to temperature data. In 1982, NASA’s James Hansen showed that sea level stopped rising after the mid-1950’s for twenty years. NASA has since erased this pause, and turned it into an acceleration.

NASA 1982NASA 2016

This is just a small sampling of the climate fraud being done right under our noses by NASA, NOAA and CRU. It is essential that the Trump administration end this fraud.

The biggest fraud of all though was John Cook’s 97% consensus paper, which gave politicians and journalists license to ignore all data, and rely simply on appeals to fake authority.