Atmospheric aerosols can significantly cool down climate

[OKIsItJustMe]

http://www.uef.fi/-/atmospheric-aerosols-can-significantly-cool-down-climate

[font face=Serif][font size=5]Atmospheric aerosols can significantly cool down climate[/font]

[font size=3]It is possible to significantly slow down and even temporarily stop the progression of global warming by increasing the atmospheric aerosol concentration, shows a new study from the University of Eastern Finland. However, climate engineering does not remove the need to reduce greenhouse gas emissions.

The study used global climate models to analyse the ability of atmospheric aerosols to cool down the climate, as well as the consequences of their use. The study focused on methods of climate engineering, which intentionally and artificially increase the atmospheric aerosol concentration in order to cool down the climate. Furthermore, the cooling effects of current atmospheric aerosol emissions were analysed. The study found that aerosol particles injected into the stratosphere proved extremely efficient in cooling down the climate. The method mimics massive volcanic eruptions which release aerosol particles into the stratosphere that reflect solar radiation back into space, thus cooling down the climate even up to years. Atmospheric aerosols injected into the troposphere, on the other hand, can effectively impact the climate through cloud formation. Atmospheric aerosols increase the number of cloud droplets in clouds and make them whiter, which means that they can more effectively reflect solar radiation back into space.

The study also showed that current traffic and industry induced aerosol emissions cool down the climate. However, their cooling effect on the global temperature is significantly smaller than the warming effect of current greenhouse gas emissions. Nevertheless, it would be possible to harness, for example, global airline traffic and ship traffic for the purposes of atmospheric temperature regulation by increasing the sulphuric concentrations of fuels. This would make it possible to significantly increase stratospheric aerosol concentrations and cloud reflectivity in open sea. However, sulphuric concentrations of fuels would have to be increased beyond the levels defined in international agreements. In addition, the cooling effect would mainly be targeted at the northern hemisphere, which is responsible for a far greater share of global traffic than the southern hemisphere.

[font size=4]Climate engineering not enough, greenhouse gas restrictions vital[/font]

The study also shows that not even the most promising methods of climate engineering can cool down the climate, unless the growth of greenhouse gas emissions can be brought under control. This is indicated by a study that analysed the climate effects of a volcanic eruption at a time when aerosol concentrations in the stratosphere were increased for climate engineering purposes. The cooling effect of the volcanic eruption was significantly smaller than it would have been under normal circumstances. The sulphur dioxide released in the volcanic eruption combined with the sulphur dioxide injected into the stratosphere for climate engineering purposes leads to relatively larger particle sizes in comparison to a volcanic eruption in current conditions. The ability of large particles to reflect solar radiation is weaker and their life cycle in the atmosphere shorter than those of smaller particles.

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19.5.2016[/font]

[tonyt53]

1. Pie in the sky stuff

[truedelphi]

2. What a conundrum. For instance,

Dennis Kucinich put together legislation or added to legislation being considered, some hard hitting legal statements that would ban such useages.

Why? Simply because if the USA uses them for "good" then wouldn't the USA also use them for bad?

Many people in Europe and the Middle East believe that the USA has already used such items of geo engineering for bad. In fact, for very very bad.

They believe that sky changes brought about by drying agents, like various silicon and siliconates, placed in the aerosals that purportedly can be used to create droughts where it suits the Powers that Be and that were indeed responsible for the drought that caused such a huge spike in food prices that the Egyptian Spring was the result. Now you have Syria and Libya and other countries facing ruin, due to the civil unrest that came about after that drought.