Conventional large -scale aircraft can be spent. (Photo: Freepik, Andrei Armiagov)
London/Hamburg – The rescue of the world climate could almost begin immediately, say researchers of the University College London. They rely on the, albeit controversial, spending in the atmosphere that reflect sunlight, so that fewer heat rays arrive on earth. So far, the scientific world assumed that special aircraft have to be developed for this, which emit the particles at a height of at least 20 kilometers.
Comprehensive computer simulation
After comprehensive computer simulations, doctoral student Alistair Duffey is convinced that conventional large -scale aircraft such as the “Boeing 777” could take on this task. It can reach a height of almost 15,000 meters. The researchers carried out simulations in the British “Earth System Model 1” in order to estimate the effects of aerosolinjection.
By adding sulfur dioxide, which forms tiny reflective particles, the effectiveness of different operational strategies can be quantified at different heights, latitudes and seasons. The aerosols emitted at a height of 13,000 meters could cool the polar regions of the planet decisively, albeit much less effective than in higher locations closer to the equator.
According to the team, the use of stratospheric aerosole injections at relatively low heights is only effective near the north and south poles. To be effective, the particles above most clouds must be created. Otherwise they would be captured by the clouds and transported to earth with the rain. These conditions only exist near the poles. The particles at 20,000 meters would have to be emitted closer to the equator in order to have an effect on months or even years.
Vulcan eruption showed efficiency
The researchers estimate that the injection of 12 million tons of sulfur dioxide per year at a height of 13 kilometers in the local spring and summer season would cool the earth by about 0.6 degrees Celsius. This roughly corresponds to the amount that came into the atmosphere in 1991 due to the outbreak of the Pinatubo volcano in the Philippines. As a result, the global temperature fell by 0.5 degrees Celsius.
At the moment, the global temperature increase is already close to 1.5 degrees Celsius, the brand, which would not be better exceeded in order not to jeopardize the future of the earth. A minus of 0.6 degrees would give the world a lot of air. However, the rainfall worldwide would decrease on average and it could have other negative consequences because they changed the large air currents in the atmosphere, fear researchers of the Max Planck Institute for Meteorology. In addition, around 100,000 flights per year would be necessary to transport the huge amounts of sulfur dioxide into the atmosphere.
Source: www.pressetext.com
(PTE031/29.04.2025/12:30)