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Don Schlessinger

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Norman Pappous

Wisconsin???????

Gary Miller

Activists keep saying'climate change' but never identifying what climate change is. it's not global warming. The global warming activists changed their narative when the climate started cooling in 1998. It's not global cooling. There has been less global cooling than expected. Look at daily high or low temp records. They are nearly always ten or a hundred years old. Some high temp records go back to 1875 and 1876. After the end of the 'Little Ice Age'. Explain please! What really is climate change?

Bailey Jones

Sure Gary.

Climate change is our current situation, where CO2 and other greenhouse gases are causing a build up of thermal energy in the atmosphere, oceans and landmasses by trapping the infrared wavelengths of sunlight - like a greenhouse. This increase of energy being dumped into the very complicated control loop that is our planetary climate causes all sorts of mischief. The oceans are getting warmer - this causes more intense storms, and has the potential to alter the Gulf Stream - which, historically, will cause alternating cold and hot cycles in northern Europe and England. A warmer atmosphere causes weather patterns to change so that droughts occur in some areas and floods in others, and changes the jet stream which normally keeps cold arctic air at the north pole - but this year let some of that cold air come down and freeze Texas, while other areas see record heat. Warmer air and oceans mean the melting of glaciers and a subsequent rise in sea level, while simultaneously creating more snow in mainland Antarctica.

Here's an analogy. Consider a barrel of water. And you're adding more water to it. The amount of water is the thermal energy in our climate system and the level of the water is the temperature. If you add water (thermal energy) slowly, the water level (temperature) rises slowly and uniformly across the whole surface of the water in the barrel (Earth). If you add water more quickly, you create waves on the surface of the water. The average level of the water is rising (because you're adding more water) but because of the crests and troughs of the waves the water level (temperature) at any particular point in the surface of the water may be higher or lower than average. That's why "climate change" doesn't mean "global warming" or "global cooling". Although the average temperature of the earth is rising, because of the effects of weather, wind, and ocean currents, some places get warmer while others get cooler. The faster you pour in the water the more chaotic and unpredictable the surface of the water is. That's the change we've seen in the climate - more chaos and more unpredictability. Any control engineer can tell you the consequences of adding too much energy too quickly into a complicated control system. It's chaos. (That's why when energy in the form of a bump in the road hits your car at high speed you lose control and end up in the ditch.)

While the chaos means we can't predict the weather at every point on the planet with certainty, we can predict the averages. The earth is getting warmer. Glaciers are melting and the sea is rising. Plants, animals, birds and fish are migrating as the seasons change. These are all real and measurable consequences of adding thermal energy to the planetary climate.

And while we can look at history for small scale perturbations of the climate (like the Little Ice Age), the amount of CO2 and other gases in our atmosphere is unprecedented in the age of man. So is the amount of thermal energy being trapped. So is the rate of temperature rise. And so will be the consequences to our climate.

Brian Tamney

you defeated your own argument in line five when you pointed out that changes in the gulf stream historically vary the weather in europe, otherwise known as the climate has always changed.

Bailey Jones

Of course, the climate has always changed. It's always changing. We should, in fact, be headed into another cold period, based on natural climate cycles. But guess what? We've dumped enough CO2 into the atmosphere that natural cycles are no longer in control of climate. We're doing in decades what natural cycles do in millennia. That's what man-made climate change is. We're driving the system toward instability.

Ted Gillis

You bring a lot to the discussion Gary. All you did was ask another question.

Larry Grissom

Lololololol. Are you serious?

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