Sunday, May 23, 2010

Home made clouds :D

Cloud whitening, Marine cloud brightening or Cloud reflectivity enhancement is the buzz word today as Bill Gates is not leaving any stone unturned no matter which area it is and now its turn to produce some clouds up in th air. While we all knew its human hands that blacken the clouds but now, technology can even whiten them!! So God can may be sit back and relax while John Latham can work with his team to send back the solar radiationss and to coat the clouds with a fresh layer sparkling white. Looking at the concept it could have never been easier than this that a fleet of ships bearing high powered water cannons push massive amount of ocean water into the air up high, as much as 3000 feet in air in the troposphere. This would lead to some more layers of clouds formed thus the moisture with the required sun shine and air can enable the fresh white clouds to be much thicker and thus reflect the harmful radiations from the sky.
The heavily criticized geoengineering technology is an approach for solar radiation management. Oceans are chosen since the marine environment had a deficit of cloud condensation nuclei due to the lower levels of dust and pollution over the sea, and this simple technique needs no extra energy to carry the water rather the water from the ocean can just be sprayed up there, a sustainable approach again closing the loop.

John Latham has suggested that by increasing the number of droplets in maritime layer clouds, known as stratocumulus, we could significantly increase the amount of solar energy these clouds reflect.The Seawater spray devised by John Latham and Stephen Salter works by spraying seawater in the atmosphere thus thickening the clounds and further increase the reflectiveness of clouds. This demands as many as a fleet of around 1500 unmanned Rotor ships known as Flettner vessels to spray mist created from seawater into the air that reflect more radiation from the Earth. Studies indicate this technique can give >3.7 W/m2 of globally-averaged negative forcing, that is miraculous being enough to reverse the warming effect of a doubling of CO2 and all at the cost of a low ecological impacts and a environment friendly approach the ingredients being sea water and air. Energyy source would be wind and it could be controlled by satellite measurements of albedo. (The albedo of an object is a measure of how strongly it reflects light from light sources such as the Sun).
The idea is to inject a fine spray of sea salt from the ocean surface into the clouds. Up to 25% of the world’s oceans are covered with thin low-lying stratocumulus clouds (below 2400 meters) and these areas can be targeted.
But does this mean we continue to be careless about the green house gases and keep using the fossil fuels emitting all possible nasty gases that are a threat to human kind and unbalancing the nature. what about considering the weather pattern that could disrupt marine ecosystems, including bird and plant life. While technology challenges nature can it take care of the whole ecosystem all alone? Concerning the transboundary issues, who has a share on the clouds and who owns them?? A lot of questions to be answered before we actually see the sparkling shining clouds waving to the harmful radiations an adios!!

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