Which makes in ancient history. Seriously, the climate sciences have advanced a lot since then, and we now know the cause of the brief cooling period the article is talking about: particulate pollution. After catalytic converters and other pollution controls became mandatory, particulate pollution decreased, and the warming trend resumed.
Which makes in ancient history. Seriously, the climate sciences have advanced a lot since then, and we now know the cause of the brief cooling period the article is talking about: particulate pollution. After catalytic converters and other pollution controls became mandatory, particulate pollution decreased, and the warming trend resumed.
Yeah, right. LOL!
Do you think that the Maunder Minimum, which just conveniently took place during the 70 year period that coincided with the coldest period of the "Little Ice Age" from 1645 to 1715 was just a coincidence?
For readers not familiar with the Maunder Minimum, it was an unusual period of time when there was almost no sunspot activity for 70 years. Normally, sunspot activity follows about an 11 year cycle where sunspots go from a peak number to a much smaller number, and then back to a peak.
Most honest scientists today believe that the Maunder Minimum represented a period of time during which the energy output of the sun decreased enough to affect temperatures on earth and other planets.
Can you provide a link to the evidence to support this claim?
I can buy the reduction in particulate in coal-burning plants, but catalytic converters are not particulate reducers. And low-sulfer diesel (diesel being a high-particulate fuel) is just now being mandated.
Also, my educated guess is the reduction in particulates in the U.S. in the 1970s and 1980s has likely more than been offset by increases in the developing world such as China and India. A wild-card in this would be the collapse of communism, which reduced economic output (and likely the particulate output) in the Soviet Union, and via the reunification of Germany forced a clean-up of the filthy air in East Germany.
However, many other countries, especially in Asia, had horrible air pollution before the recent rise of India and China. Japan in the 1980s and 1990s had filthy air. As did Korea and Malaysia.
If you are correct that U.S. EPA actions around air pollution in the 1970s caused a worldwide climate effect, someone somewhere has to be predicting the effect of China's and India's air pollution output.