A total of 36 Nobel laureates signed a declaration on the island of Mainau on Lake Constance (South Germany) urging the UN and the leaders of all the world act decisively against climate change.
The signing, driven by the initiative of the American astrophysicist Brian Schmidt closed the traditional meeting of scientists awarded the prestigious Nobel and has character call to the forthcoming UN Climate Paris.
The statement claimed urgent action to achieve a binding agreement at the global meeting of the French capital, the continuation of the “spirit” of the Kyoto Protocol.
“Failure to act would mean placing future human generations unforeseeable risks,” the scientists write in that document, which warns of the danger that mankind is on the threshold of a “global tragedy.”
The meeting on Mainau ended the annual meeting of laureates, who traveled together on a boat from the town of Lindau, on the shores of the lake to the island.
Read tmbién: weather patterns are causing increased heat waves
Hence the closing ceremony of the meeting took place after a week of meetings between leading scientists and new generations of researchers.
The meeting of Nobel takes place for more than sixty years ago, is informal, and this time ended with a unified statement.
The last time there was a similar ruling in 1955, then capitalized by the warning issued at the request of physicist Otto Hahn about the risks of use for military purposes of atomic energy.
The statement follows the Nobel expressed by the leaders of the G7 United States, France, Germany, Italy, Canada, Japan and the United Kingdom commitment at the last summit of Elmau (Southern Germany) in the fight against climate change .
Also it happens to the encyclical on environmental protection issued recently by Pope Francisco. (I)
Weather patterns causing heat waves increase
Daily weather patterns have changed in recent decades, making the eastern North America, Europe and western Asia are more likely to waves of extreme heat during the summer, a phenomenon that goes beyond global warming, revealed a new study.
A team of climatologists from Stanford University climate patterns observed since 1979 and found changes in the frequency and intensity in different parts of the world, according to a study published Wednesday in the journal Nature. These are the kinds of weather patterns with stationary systems, high and low pressure one sees on the weather forecasts, which are different to the gradual warming caused by man.
The team studied the kind of patterns that upper air “can amplify the warming trend,” said study leader Daniel Horton.
The study does not attempt to explain why these changes are happening. But in general fit into a theory that has gained momentum in the climate community pointing that melting sea ice in the Arctic has changed sometimes the polar jet stream, contributing to more extreme weather such as storm Sandy, outside experts said the Stanford study.
Thaw in the Arctic
In many cases, including the summer in the eastern United States and western Asia, some of these changes have become more noticeable since 1990, the same period when the level of the sea ice in the Arctic was in a downturn faster, the study found.
For example, the pattern of summery weather, with a high pressure system in northeastern North America that keeps warmer than normal in the eastern United States climate, used to appear for about 18 days at the beginning of the summer 1980 now occurs every summer for 26 days, the study found.
“Every summer there are more of these patterns and, on average, increasingly last longer,” Horton said.
Changing patterns is even more noticeable during the summer in Europe and western Asia, as Horton and co-author Noah Diffenbaugh.
Horton and patterns that are different from the studied Diffenbaugh responsible for the current heat wave in the southeastern United States, Horton said. But weather patterns studied were the same kind of responsible for heat waves that killed more than 50,000 people in western Russia in 2010 and more than 70,000 people in Europe in 2003, indicated in the investigation.
In winter, there have been changes in weather patterns that have worsened the icy gusts in central Asia, Horton said. But the study also found an increase in weather patterns associated with a less extreme gusts of frigid winters in West Asia change.
Diffenbaugh said the changes could be the result of chance, or a side effect of climate change and melting sea ice, as others have theorized.
Climatologist at Rutgers University, Jennifer Francis, praised the study, which he said was thorough and “consistent with the expected changes associated with the rapid warming of the Arctic.”
This shows that increasingly more difficult to separate the daily weather patterns of long-term changes in global warming, professor of meteorology at the University of Georgia, Marshall Shepherd, who was not part of the study. (I)