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Climate Change: “Clear Evidence for a Discernible Human Influence” – Science Speaks

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Science is Clear - Human Activity is Influencing Climate Change
Science is Clear – Human Activity is Influencing Climate Change

For those who still doubt climate change, and there are many, it seems appropriate to note that scientists studying climate change, about 97% of them, agree that human activity is definitely having an impact on the planet’s climate.

How can they come to such a conclusion so definite? Perhaps the simplest method of all, the process of elimination, has led climate-change scientists to agree that human beings are the cause of the problem that we’re now experiencing, and is only expected to get worse. How did scientists eliminate other causes from the climate-change model?

Dr. Benjamin Santer has published a paper, entitled “Human and Natural Influences on the Changing Thermal Structure of the Atmosphere,” explains how variables in the natural world, including human activity, have an affect on the atmosphere and climate change. By comparing satellite observations to the output of twenty different climate-change models, Santer and other scientists were able to determine which variables impact, and how they impact, the climate.

There were basically three series of tests, depicting different scenarios. One test run of the climate models included only natural effects of sun, wind, volcanoes, and others, but without human activity. A second test run included only human activity without these natural effects. A kind of fingerprint, attributable to one or the other, that is, natural or human, can be seen in the patterns that emerge. A third test run was a comparison of the natural, human, and observed climate-change data.

The observation was clear, that certain patterns, the fingerprint, matched that of the data obtained from the human-activity. Other patterns within the satellite and ground observations matched the fingerprint of the natural-world climate-change model. The conclusion is, “human-caused latitude/altitude pattern of atmospheric temperature change can be identified with high statistical confidence in satellite data. Results are robust to current uncertainties in models and observations … Our results provide clear evidence for a discernible human influence on the thermal structure of the atmosphere.”

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1 COMMENT

  1. Water is wet and the sky is blue and yes the air over major cities is warmer than over land that is not populated. Human activity generates heat, carbon and more things than can be mentioned here. To state a no brain-er does not prove anything. Is climate change real? Of course it is it’s been happening for as long as the planet been in orbit around the sun. So if the climate has been changing long before people started driving cars and drilling for oil and burning the forests to make crop land, logic would dictate human activity is such a small influence in the grand scheme of things that it might not be worth mentioning. No body denies climate change, that would be like saying gravity doesn’t exist. The question is do you have a dog in the fight? In the bigger picture the answer is no. However on a small scale, I mean on a super small scale human influence has an impact on climate over cities tiny areas compared to the surface of the earth. Humans do not have control of the thermostat of the earth we simply cant reach that high. Humans are very adaptable that’s why we live in just about every climate on the earth we changed to suit our climate. People who lie and claim we can control the speed, amount and duration of change are blowing smoke. No matter how much you try you can not maintain the status qoe, change happens with or without your influence. My suggestion is that you do what we do best….adapt. Oh and btw get over yourself, humans don’t even have a seat at the table when it comes to climate change. Your just along for the ride.

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