--------------------------------------------
No smoking hot spot David Evans - THE AUSTRALIAN July 18, 20081. The greenhouse signature is missing. We have been looking and measuring for years, and cannot find it.
Each possible cause of global warming has a different pattern of where in the planet the warming occurs first and the most. The signature of an increased greenhouse effect is a hot spot about 10km up in the atmosphere over the tropics. We have been measuring the atmosphere for decades using radiosondes: weather balloons with thermometers that radio back the temperature as the balloon ascends through the atmosphere. They show no hot spot. Whatsoever.
If there is no hot spot then an increased greenhouse effect is not the cause of global warming. So we know for sure that carbon emissions are not a significant cause of the global warming. If we had found the greenhouse signature then I would be an alarmist again.
It is foolish to argue that more CO2 would benefit the earth when the entire concept of CO2 affecting the global climate is a hoax.
That's definitely untrue. We had the least CO2 in the atmosphere in the past million years out of the four billion years of data. The fact of CO2 starvation has placed the earth in a permanent ice age with brief interglacials like the one we are currently in. Without the extra CO2 generated by mankind we would be at risk of an ice age that would kill a large portion of the biosphere and billions of people.
The CO2 starvation also created the C4 plants like corn that are efficient enough to pull nearly all of the available CO2 from the atmosphere in the middle of the cornfield (well-watered in full sun). Greenhouse growers must use CO2 creating system in their greenhouses or their produce will die. They typically bump up CO2 to 1000 ppm. Not only does CO2 make it warmer but it makes plants grow better.