In the past ten years, the scientific discussion about the risks and advantages of cooling the earth's surface temperature has been increased by increasing the reflection capacity of the atmosphere. Two methods have turned out to be the most potentially suitable methods.
A method, stratospheric aerosolinjection or SAI, contains the spread of microscopic particles between 7 and 30 miles in the atmosphere to reflect on a small part of the sunlight into space. The other method, the marine clouding or the MCB, is to sow marine clouds at a low level with sea salt particles in order to make the clouds more reflected and reduce the sun's rays that can reach the water below.
A well -established characteristic of the atmospheric particles is that although a small part of the incoming sunlight reflects, a much larger part of the sunlight, which is not reflected, is largely spreading to the front. A new NOAA study published in the magazine Geophysical Research Letters has shown that this diffusion of sunlight from particles in the stratosphere could make indirectly thousands of meters below reflective or essentially brighter.