You are a non-serious person.
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Please pay close attention to this simulation
Now look at the direction of Wind...
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Your brilliant master plan would not only earn Pakistan global condemnation for mass-murder on a genocidal scale, it would iridate all of KPK.
Calculations using version 1.0 of the Community Earth System Model (CESM1), with the Whole Atmosphere Community Climate Model (WACCM) show that the BC would self-loft to the stratosphere, where it would spread globally, producing the coldest average surface temperatures in the last 1000 years.
Killing frosts would reduce growing seasons by 10-40 days per year for 5 years. The figure shows how CESM1(WACCM) calculates that the BC would remain in the stratosphere (panel a) reducing solar fluxes to the surface (panel b) for nearly 2 decades, much longer than previous studies of the same scenario with other models, due to interaction of the radiation, chemistry, and dynamics calculated in the coupled model. Surface temperatures (panel c) and precipitation (panel d) would be reduced for more than 25 years, due to thermal inertia and albedo effects in the ocean and expanded sea ice.
Previous studies did not include both full ocean dynamics and atmospheric chemistry,
and found that these disruptive effects on surface climate would last about 10 years.
At the same time, intense heating of the stratosphere would cause global ozone losses of 20%-50% over populated areas, levels unprecedented in human history.
TLDR:
It would take
11,520 years for any buried radioactive material to decay and and reduce to levels where they would not pose a risk to the environment or living creatures.
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Please talk sense.