Recent study by researchers at Princeton University offers a new way to look at global warming and the consequences to which it leads. If you believe the environmentalists, more than a third of the planet is subject to sudden changes of weather. The days become either very sunny and dry, or cloudy and rainy. A change of one to the other is very sharp.
Seemingly ordinary phenomenon, when the sun is shining then, the rain will break, but these variations are actually incredible impact on the entire ecosystem, including plants, animals and humans. In addition, they also lead to terrible consequences — for example, cause extensive Epidemic, hit the industrial complex and agriculture.
David Medvigi, professor of geology at Princeton University, is convinced that if the change of stable warm period of the cold is broken, as is observed in the last 20 years, it makes a mess in the world's climate. The atmosphere starts otherwise distribute heat and precipitation around the globe, and the plants start to absorb less carbon dioxide (CO2). Because irregular rainfall and fluctuations of the discharge "is the sun, the rain," impair photosynthesis.
Hence, carbon dioxide in the atmosphere will linger longer than they should be the norm. Balance is disrupted, and the plants will not be able to absorb a higher level of CO2. This will lead to the greenhouse effect, which immediately will accelerate global warming.
For the study of weather extremes Medvigi with Claudia Beaulieu, party Princeton Program in Oceanography and Atmospheric Sciences, has developed a computer program to analyze the data obtained in the course of two global meteorological research: Satellite Cloud Climatology Project, conducted from 1987 to 2007., And Global Precipitation Climatology Project, which lasted from 1997 to 2007.
They proposed a new approach to the study of climate change. At the moment, meteorologists and ecologists analyze monthly changes in temperature and end up with some kind of average. And such data, according Medvigi, do not give the full picture. "We get that for the entire month was both a little warmth, a little sunshine and a little rainy, but it happens very rarely. Typical day is either hot or cold," — said the researcher its position on the existing methods of calculation of the temperature fluctuations.
The results, which appeared recently in the scientific journal Journal of Climate, showed that about a third of the world (35%) experienced a strong gap between the two extreme types of weather. What does that mean, the drought is quickly replaced with little or no rainfall transition, and days with a stable temperature is decreasing. Moreover, in some regions of these types of starts to dominate, and there is increasing number of hot days or rainy.
Particularly affected equatorial Africa and Asia. Similar phenomena are observed in the United States, to a lesser extent. Thus, in the north-eastern North America sudden jumps from sun to clouds have become more frequent over the past 20 years in the winter.
"Although the sudden weather changes relate more to the tropics and the equatorial belt, it has a global impact," — said William Rossou, professor at New York College, which was a review of the work of their colleagues. He explained that the processes occurring in the atmosphere are interrelated, and if some cataclysm erupted at one point on the Earth, for example, a storm in the Pacific region, the effect of this phenomenon is the wave passes around the globe. The fact that the atmospheric heat diverges from the equator to the poles, so there is a violation of the stability of the temperature immediately affects the global climate.
About what we are facing a natural change, told the Intergovernmental Panel on Climate Change, the UN (IPCC) in its regular, fifth in a row, the evaluation report. It was presented at a conference in Uganda, which is taking place this week from 14 — 17 November.
According to the document, civilization will have to face the devastating rains and severe drought. If now the disastrous rainstorms occur every 20 years, by the end of the century they will occur every five years, and may be accompanied by devastating hurricanes. As for the drought, which are directly linked with the rains, as the intense heat vaporizes a large amount of water that condenses in the atmosphere and falls to the ground by the storm, they will hit the equatorial regions in the first place. Anyway, climatic shock will be so strong that many regions will simply uninhabitable, and after weather events inevitable social explosion.
Experts fear that the rise in the average temperature of the Earth would result in a global migration: people will be forced to leave the region in which the accommodation will be impossible. And relocation may become truly global, so all governments of the world should be prepared for this, otherwise disastrous not long in coming.
Even last year, 12 prominent climate researchers from around the world held a conference in Bellagio Center in Italy. They analyzed the experience of moving large numbers of people due to natural disasters, such as floods or earthquakes, and due to changes in infrastructure, such as the construction of dams or laying of the pipeline. Data were collected for 50 years. The researchers concluded that in the past experience of migration was, for the most part, negative. Appropriate conditions were not provided.