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Can Geoengineering Drones Fight Global Warming? (technologyreview.com)
MIT Technology Review reports:
David Mitchell, a lanky, soft-spoken atmospheric physicist, believes frigid clouds in the upper troposphere may offer one of our best fallback plans for combating climate change... Fleets of large drones would crisscross the upper latitudes of the globe during winter months, sprinkling the skies with tons of extremely fine dust-like materials every year. If Mitchell is right, this would produce larger ice crystals than normal, creating thinner cirrus clouds that dissipate faster. "That would allow more radiation into space, cooling the earth," Mitchell says...
Increasingly grim climate projections have convinced a growing number of scientists it's time to start conducting experiments to find out what might work. In addition, an impressive list of institutions including Harvard University, the Carnegie Council, and the University of California, Los Angeles, have recently established research initiatives... By this time next year, Harvard professors David Keith and Frank Keutsch hope to launch a high-altitude balloon from a site in Tucson, Arizona. This will mark the beginning of a research project to explore the feasibility and risks of an approach known as solar radiation management. The basic idea is that spraying materials into the stratosphere could help reflect more heat back into space, mimicking a natural cooling phenomenon that occurs after volcanoes blast tens of millions of tons of sulfur dioxide into the sky.
"I don't really know what the answer is," says a former associate director at Lawrence Livermore National Laboratory. "But I do believe we need to keep saying what the truth is, and the truth is, we might need it."
Increasingly grim climate projections have convinced a growing number of scientists it's time to start conducting experiments to find out what might work. In addition, an impressive list of institutions including Harvard University, the Carnegie Council, and the University of California, Los Angeles, have recently established research initiatives... By this time next year, Harvard professors David Keith and Frank Keutsch hope to launch a high-altitude balloon from a site in Tucson, Arizona. This will mark the beginning of a research project to explore the feasibility and risks of an approach known as solar radiation management. The basic idea is that spraying materials into the stratosphere could help reflect more heat back into space, mimicking a natural cooling phenomenon that occurs after volcanoes blast tens of millions of tons of sulfur dioxide into the sky.
"I don't really know what the answer is," says a former associate director at Lawrence Livermore National Laboratory. "But I do believe we need to keep saying what the truth is, and the truth is, we might need it."
I haven't seen proof yet of global warming. Of course measurements are rising at airports due to increased tarmac coverage and development around airports. My best friend works for the US Navy, and they have great equipment and good calibration since bad weather forecasts can kill people if they make the wrong forecast. They're seeing temperatures decreasing.
This. Airports are measuring rising temps die to development.
And once again the bulk of CO2 emissions still come from the industrialized world, where, with few exceptions, populations are either static or falling.
The world's burning. Moped Jesus spotted on I50. Details at 11.
It isn't actually. The amount of CO2 being released makes the number of trees required basically impossible.
And then at some point within 100 years or less you aren't saving any CO2 anymore because the trees die and release their CO2 again.
Growing, turning to charcoal and burying is slightly better and the best bet of all is simply not producing so much CO2 in the first place.
People in cars cause accidents....accidents in cars cause people