Why hasn’t the government invested in research to find a way to clear dust from stratosphere in the event of a year without a summer?

For the level of disaster this might cause with food shortages and such there has been little government preparation for such an event, even to the point that the government doesn’t create a strategic food reserve that could sustain the population through a nuclear, asteroid or volcanic winter? There also doesn’t... show more For the level of disaster this might cause with food shortages and such there has been little government preparation for such an event, even to the point that the government doesn’t create a strategic food reserve that could sustain the population through a nuclear, asteroid or volcanic winter?

There also doesn’t seem to be a strategy created to speed up natural processes to remove the dust abd soot from the stratosphere in this situation, troposphere dust is removed by rain, why not have massive water cannons or some means of using nuclear weapons to blast seawater into the stratosphere to make some of the dust rain out. Why have technologies like this not been pursued?

If worst came to worst the us could possibly have a massive reserve of R134a and R22 which could be released into the atmosphere to warm up the climate in the event of sun blocking aerosols blocking the sunlight from food production?

Why is there no plan in place for this situation in a modern technologically advanced country?
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