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8/1/2016 Exxon Confirmed Global Warming Consensus in 1982 with In-House Climate Models | InsideClimate News<br />

CO2 INDUCED CHANGES FROM CURRENT CLIMATE<br />

C02 RELATIVE ABUNDANCE<br />

In 1982, Exxon scientist Andrew Callegari put together a presentation<br />

on Exxon modeling results including the chart pictured here.<br />

Steve Knisely was an intern at Exxon Research and<br />

Engineering in the summer of 1979 when a vice<br />

president asked him to analyze how global warming<br />

might affect fuel use.<br />

"I think this guy was looking for validation that the<br />

greenhouse effect should spur some investment in<br />

alternative energy that's not bad for the<br />

environment," Knisely, now 58 and a partner in a<br />

management consulting company, recalled in a<br />

recent interview.<br />

Knisely projected that unless fossil fuel use was<br />

constrained, there would be "noticeable<br />

temperature changes" and 400 parts per million of<br />

carbon dioxide (CO2) in the air by 2010, up from<br />

about 280 ppm before the Industrial Revolution. The<br />

summer intern's predictions turned out to be very<br />

close to the mark.<br />

engagement with the<br />

emerging science of<br />

climate change. The story<br />

spans four decades, and is<br />

based on primary sources<br />

including internal company<br />

files dating back to the late<br />

1970s, interviews with<br />

former company<br />

employees, and other<br />

evidence, much of which is<br />

being published here for<br />

the first time.<br />

It describes how Exxon<br />

conducted cutting-edge<br />

climate research decades<br />

ago and then, without<br />

revealing all that it had<br />

learned, worked at the<br />

forefront of climate denial,<br />

manufacturing doubt<br />

about the scientific<br />

consensus that its own<br />

scientists had confirmed.<br />

Find the entire project<br />

here.<br />

E/ftpN RCSt ARCH AHO I NCliSEtfllNO COMPANY<br />

How We Got<br />

The Exxon Story<br />

/Xw i • '<br />

Knisely even concluded that the fossil fuel industry<br />

might need to leave 80 percent of its recoverable<br />

reserves in the ground to avoid doubling CO2<br />

concentrations, a notion now known as the carbon<br />

https://insideclimatenews.org/news/18092015/exxon-confirmed-global-warming-consensus-in-1982-with-in-house-climate-models<br />

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