L--"These seem to be coming more common this past decade or two.
Earth's atmosphere is becoming more unstable. Is it through climate change? Global warming?
Are the effects of HAARP increasing the severity and destruction of these microbursts?? "

J--At least you recognize that there is some changes in the atmosphere, some people in the scientific community, and here on HZ, argue that there is no change from the "normal". There are others who argue that this effect is only an anomaly that will go away. (if ignored)
I am sure that there are many factors that contribute to the changes, but only some of the possibilities have been studied to any extent.
What bothers me is the fact that one possible factor that can cause such effects on the atmosphere has not been studied at all.
Perhaps the beneficial effects of the use of nuclear fission is considered to outweigh any adverse effects the leftover radiation may have.

I'll try to be very brief and concise in my explanation of how nuclear fission in the atmosphere can cause changes.

First I'll explain a little bit about the process of "burning".
There are similarities in the process of burning coal and "burning" uranium, there also are major differences.
In order to make coal burn the coal must be heated to a temperature where it begins to burn, once a lump of coal is burning it can ignite another lump of coal that is beside it and that in turn can ignite another one and so on, such "chain reaction" will continue as long as the temperature is high enough, and there is coal (and oxygen) in the area.
Once all the coal has burned, the area where the coal was burning can remain hot for a long time.
When we burn coal we dig it out of the ground then we convert it into heat and gas and spread much of these products into the atmosphere.

In a similar manner we dig out uranium from the ground, then we "ignite" it in a reactor. The uranium "ignition" is called a chain reaction, nuclear chain reaction needs sufficient "fuel" (uranium or other fission material) to keep the reaction going and it must be controlled so that it does not get too hot.
"Burning Uranium" (uranium fission in a controlled chain reaction) releases much more heat than burning the same amount of coal. All the "energy" that is released in the chain reaction is not in the form of "heat".
The word "heat" refers to the kinetic energy of the molecules within any given medium. In other words, the faster the molecules of any given material move, the "hotter" the material is. Molecular kinetic energy (heat) can be transferred from one place to another or within the same material trough three different methods, they are, conduction, convection, and radiation.
If we burn coal in the atmosphere the oxygen in the air combines with the carbon in the coal and in doing so the reaction causes the molecules of the material to increase their velocity. The increase of molecular velocity is transferred to the surrounding coal mainly through the method of conduction, the transfer of heat to the air happens mainly through convection and radiation.
In a nuclear reactor the kinetic energy of the molecules is increased by "piling" or gathering enough radioactive material together so that a "critical mass" is reached. When a critical mass is reached a "chain reaction" will occur. The chain reaction is somewhat comparable to the igniting of coal, in that, when one part of the material is hot enough, it will ignite the surrounding material.
The difference is that in the burning coal it is only the "agitation" of the electrons that surround the atomic nuclei that increase the kinetic energy of the molecules, where as, in the nuclear "chain reaction" it is the nucleus of the atoms that are transformed (broken apart) and in that process impart kinetic energy to the molecules.
When the atomic nucleus "brakes apart" the "parts" that are left over will also "break apart" until they find stable combination of "particles" so that the "breaking apart" process will stop. This "breaking apart" process will continue for thousands of years with some elements and is called radioactivity.
Radioactive elements can do a lot of "work", for instance a single U235 atom releases approximately 1 watt second of power.
Unlike coal, Uranium releases (kinetic) energy constantly due to its radioactive nature. Mass contains "energy" in two different forms, namely kinetic and potential. Total kinetic energy of mass = (potential / kinetic) times Constant.
When radioactive elements are forced into a chain reaction the kinetic energy in the area is so intense that it begins to convert the potential form into kinetic variety. The kinetic form of energy that is released in the fission chain reaction comes out in many different forms, such as alpha, beta, and gamma emissions. There are also many other kinds of electromagnetic radiation that occur in the process of conversion from potential to kinetic energy.
Only a small portion of this kinetic radioactivity is converted into useful molecular kinetic energy in a nuclear power plant, Much of the "new" kinetic energy is responsible for the increase of the "radioactivity" of the "spent" fuel, some of the energy escapes in the form of x rays and gamma rays.
Somehow the "new" kinetic energy must be absorbed by the environment, the air and the water are the usual sinks for this "converted" energy.
If this converted energy is absorbed by the atmosphere then the atmosphere will heat up, if the atmosphere that surrounds the Earth heats up then many environmental changes will occur. Hotter atmosphere will be less dense and will expand further into space, the kinetic energy of the atmospheric molecules will be higher therefore the wind speeds will be higher, wind storms, hurricanes, twisters, and other weather phenomenon will become more devastating. Since the atmospheric molecules will have more kinetic energy they will have a better chance of escaping into space, if they do, the Earth's atmosphere will be left permanently at a lower pressure. If the atmospheric pressure becomes lower, then the sun's energy will seem hotter at the surface of the Earth, also the ultraviolet radiation that comes from the sun will be more intense at ground level. Increased UV radiation will cause skin and eye problems in people. If the Earth's atmosphere becomes very thin then the pressure or weight that it imparts on the Earth's surface will decrease, if the external pressure of the atmosphere decreases then the internal pressure of the Earth will have a better change of exerting its self outwards and there will be more volcanic activity and more Earth quakes.

Johannes