The clouds caused by people mainly cover Asia, but also parts of Sudafrika, Europe, North America and the Amazon Basin
Mighty, people caused by people of poisonous chemicals, RUB and SMOG cover the sky over wide parts of Asia and influence the climate there. A three kilometer thickness "brown cloud" Extends from the Arabian Peninsula Uber China to the Pacific Ocean, warns a report of the United Nations Environmental Program (UNEP). The cloud leads to the city darker, the glaciers in the Himalayas faster and illuminate people.
Car exhaust gases, churn, wood fire and coal-fired power plants contribute to the formation of brown clouds in the atmosphere (Atmospheric Brown Clouds – ABCS), which mainly cover Asia, but also parts of Sudafrika, Europe, North America and the Amazon basin. The report was published in Beijing, which is considered one of the megacities with the large air load.
Smog over China. Image: nasa
The other cities that are considered particularly danger are Bangkok, Cairo, Dhaka, Karachi, Kolkata, Lagos, Mumbai, New Delhi, Seoul, Shanghai, Shenzhen and Tehran. In the air of these megacities you will find 10 percent of the total amount of all particles caused by people. In the Chinese city of Guangzhou, the light incident has become 20 percent lower by the dirt clouds since the 1970s. In general, the light is dimmed in the involved city between 10 and 25 percent. In China, the light has been dimmed between 3 and 4 percent per decade since the 1950s, in India by 2 percent since the 1960s. However, in recent years, the "Darkening" faster risen.
It is the highest time to act, UNP Director Achim Steiner warns at the idea. The rich industrial dwellers had to help the developing and emerging markers in which air pollution. This not only got the climate warming, but also reduce the health consequences for people. The cause of the ABCs is usually the same as the greenhouse gases, says Steiner: the burning of fossil fuels and biomass as well as the deforestation.
The rubbing, coal and sulfur particles and the other chemical, partly toxic substances forming the brown clouds, "mask" The air conditioning, because they reflect the sunlight and cool the regions under the clouds. The current emphasis will be sent between 20 and 80 percent. The particles and aerosols in the ABCs can complicate the formation of raindrops. Therefore, the clouds stick long and rains less. If the climate effect of the ABCs can be succumbed, then the scientists ame that the global temperatures were climbed by up to 2 degrees Celsius. Therefore, it could be risky to get only the formation of brown clouds without simultaneously accessing the emission of greenhouse gas emissions,
However, what may appear as a consciously practiced Geoengineering, however, leads to significant consequences by changing the weather. So it is always dry in North China, during Sudasien the flood hazard growth. The monsoon rainfall in India and Sudasia have been reduced by 7 percent for the 1950s, in particular the downstream in the summer monsun. In China and Asia, extreme grounds have become more frequent. The emphasis of the atmosphere by the ABCS is besides the climate heat through greenhouse gases for the "abnormally high arms trend in the increased areas" How the Himalaya region made responsible.
The impact of the emphasis and cooling effects caused by the ABCS has, according to the scientists, without further research is not really possible to identify. However, they are from many, also dramatic consequences, also in cooperation with greenhouse gas emissions. Thus, the harvest could be lower by the increase in ozone at the ground – between 10 and 40 percent. Due to the darkening, photosynthesis could be braced, which contributes to a lower growth of the plants. And the toxic and acidic particles could harm the plants.
The toxic aerosols, carcinogenic and other particles such as fine dust particles, which are smaller than 2.5 microns, also affect the health of humans and can lead to numerous diseases, especially on respiratory and cardiovascular diseases. Alone the greater suspension to such particulate matter particles outside of buildings could be added to 349.000 Additional death traps in the year in China and India. 780.000 Death trap Against both countries, the WHO is already associated with the use of solid fuels in interior space.