Fresh water on Earth quickly disappeared – researchers from the University of Arizona came to this conclusion, analyzing more than 20 years of satellite observation. Since 2002, water reserves have been recorded on land, mainly due to climate change, using too much groundwater and drought regularly. The results were reported by the Advances Science Magazine.
The authors of the study noted that the annual dry areas increased to a double area compared to California. Great water loss has contributed more to the increase in sea level compared to the melting of the Greenland and Antarctic glacier. According to Grace and Grace-Fi satellites, 68 percent of water lost on underground sources.
The study revealed four Mega-dry areas, in the northern hemisphere: Southwest North America and Mexico, northern Canada and Alaska, North Russia and belt from the Middle East to North Africa and Eurasian. These areas include the largest agricultural areas, superior cities and waters like Caspi and Aral Sea.
Scientists warn: If you do not take emergency measures to sustainable water resources, human resources will encounter threats to food, biodiversity, stability and support the lives of billions of people. Research will become the basis of the World Bank's new report on the socio -economic consequences of global dehydration.
Previously, scientists from Europe have discovered hidden lakes under the glaciers in Antarctica, with sudden sewers, which can accelerate the destruction of shields.