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Letters

No one is a climate-change denier; the issue is cause

President Donald Trump speaks during a meeting with Congressional leaders and administration officials on tax reform, in the Roosevelt Room of the White House, Tuesday, Sept. 5, 2017, in Washington. (AP Photo/Evan Vucci)
President Donald Trump speaks during a meeting with Congressional leaders and administration officials on tax reform, in the Roosevelt Room of the White House, Tuesday, Sept. 5, 2017, in Washington. (AP Photo/Evan Vucci)

To the Editor:

Earth’s climate has been changing for thousands of years. People debate the exact extent and impact, but no one is a climate-change denier. The issue is the cause, natural or man-made.

There were periods of warming and cooling before the industrial revolution could increase atmospheric carbon dioxide (C02). There was a decline in global temperature from the 1950s to mid-1960s.

There was no warming for 18 years from 1996 to 2014, with CO2 increasing. Temperature changes are correlated with natural cycles of sunspot activity and very little with CO2.

Greenhouse gases are 95 percent water vapor and only .05 percent CO2, which is an essential plant nutrient. We can do nothing about water vapor or sunspot activity and CO2 is needed to grow our food.

A 2013 Swedish study suggested the planet was warmer in the Middle Ages than today based on radiocarbon data of where tree lines were in Scandinavia. Climate scientists Marohasy and John found that, at most, the contribution of industrialization to warming over the 20th century was .2 degree Celsius out of a total change of 1 degree.

The Massachusetts Institute of Technology assessment of the Paris Accord found reduction in warming this century to be 0.0 to 0.2 degrees Celsius. This assumes countries follow through on their pledges, which they usually don’t.

We can do very little to affect climate change, and are better off spending money preparing for any adverse change rather than restricting our economy and giving away money to other countries.

Alarmists blaming climate change for war in Syria is ridiculous. It was mainly due to discontent with the government over lack of freedom. The fighting involves multiple competing Islamic factions, including other countries, that has been going on for many years.

We need open scientific discussion, not alarmism.

Robert C. Lemke

Joliet

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