In Much of U.S., Extreme Cold is Becoming More Rare | Climate Central
As usual, they started their graph in the 1970’s, which had the coldest winters of the 20th century in the US. Had they started during almost any other decade, they would have seen an increase in very cold weather over time.
1974 was the year Nixon resigned. Will history repeat itself 40 years later?
It turns out that scientists actually don’t have any idea what causes climate change.
In 1999, scientists were using the polar vortex as a way to raise money for Arctic ozone hole research.
1994 was a cold year, due largely to the eruption of Mt. Pinatubo. That year also had a lot of Arctic ice. There was a similar polar vortex cold outbreak during that year, and no one was stupid enough to blame it on global warming.
Technology to Cool the Planet: An Interview with David Keith
Boston Review: First, can you explain to readers why sulfates are good candidates for geoengineering, as opposed to other molecules?
David Keith: Sulfates are the devil we know. Small water droplets would be roughly as effective as sulfuric acid in reflecting sunlight—clouds, composed of water droplets, are white and reflective—but they would evaporate almost instantly in the dry air of the stratosphere. The sulfuric acid keeps the water from evaporating.
Sulfur emissions from fossil fuel combustion are already cooling the planet and killing roughly a million people a year from air pollution worldwide. The amount of sulfur that would need to be put in the stratosphere for solar geoengineering would be a few percent of current fossil fuel emissions. Any such injection would carry real environmental risks such as ozone destruction and acid rain, but sulfates have the advantage of being a common atmospheric chemical, one that is injected into the stratosphere by volcanic eruptions. So although sulfates are risky, we have some empirical evidence about what the risks are.
Technology to Cool the Planet: An Interview with David Keith | Boston Review
01 Apr 1990 – EARTHWEEK: A DIARY OF THE PLANET Global Warming
Twenty-four years later, NASA and NOAA ignore the more accurate satellite data – and report only useless, tampered surface temperatures.
