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Space do measurement gives a too optimistic picture of coastal floods threaten hundreds of millions of people

climate change induced sea level rise have for coastal residents clearly a greater threat than thought, warns of recent us research. Hazard of the territories has more than three times as many settlements than previously estimated, counting Nature Communications (switch to another service) in the journal published research.

in the Regions, which by 2050 will have you flooded at least once a year, is thought to live to be 80 million people. The new calculation is $ 300 million.

This chapter no longer makes more beautiful, even if carbon dioxide emissions be addressed immediately in earnest, but rapid decisions determine whether the world map of the current shoreline are recognizable again in the 2000s second half of the year, scientists say.

according to Them, 200 million people in the home can stay the next few decades, even permanently under water.

the Rising sea level and stronger storms struck hardest in Asia. Two-thirds of the at risk population lives in China, Bagladeshissa, India, Vietnam, Indonesia and Thailand, the study lists.

– climate change has the power to change the urban, coastal and total areas of the appearance in our time. States are increasingly forced to consider how long the shores of the protection structures has a benefit, said the research led Scott Kulp Climate Central (you move to another service) -organization.

the Study used artificial intelligence, the human brain's neural network activity of the mimicking algorithms.

the Sea level rise forecast figures were not taken to change, but repairs were made to the information ground height of. What alavampi the beach, then farther away from the earth for tulvehtiva the water will reach.

the New data showed that the coast has been considered a reality as higher, and the expected flood damage is therefore estimated too low, says Climate Central researcher Ben Strauss .

the Ground was thought to be the roofs of a height of

Strauss and Kulp had not been among the first specialists who discovered the flood risk assessment used topography information substantially uncertain. They put them to the real test.

the Figures are the Us space administration nasa's SRTM program. The measurements made from the space shuttle by the year 2000 flying radar system.

Kulp and Strauss compared the SRTM's data to aircraft laser measurements and found that the SRTM data appeared to systematically incorrect figures. The problem is largely due to the fact that SRTM had houses with roofs and treetops to the ground surface.

for Us, it became clear that nobody knew how high the vast majority of the earth's coasts is, Strauss recalls five years ago with the surprise.

the New data based on the generated CoastalDEM-model (switch to another service), which reflects, according to the improvement of sea level rise and coastal flooding analysis accuracy.

flood of up to one thousand times the mass of

the Sea water level increase, because the Greenland and antarctic of the great glaciers over the last ten years, chipped to melt huge amounts of ice. The water power of the new space also therefore, that when heated it expands.

climate change also knows more extreme tropical storms that dump heavy rain their particular coast and the waves to rise in the country.

the International panel on climate change IPCC creating in its most recent report (you move to another service), that the fiercest of storms, which has been once in a century, begin in the next few decades have in many places once a year.

Typhoon damage in Japan ichihara in mid-October. JIJI PRESS / EPA

If global warming can be halted less than two degrees, such as the Paris climate agreement requires sea level is calculated to rise to about half a meter by the year 2100. The current carbon dioxide emissions, the real figure could be almost double.

So coastal flood damage is projected to a hundred or even a thousand times before in a hundred will change.

in Indonesia, the effects of climate change are felt already then that the government recently announced its intention to move the capital out of Java island. It is the world's fastest sinking areas.

Climat Central figures are even more rugged than also for Indonesia: flooding risk is 23 million people, while the previous estimate was five million.

Strauss, according to many the country may have to follow indonesia's example. A disproportionately large share of humanity has settled alaville countries of the sea seem, and as climate change progresses it know suffering, Strauss said.

see also:
the IPCC has submitted a report warns: the Alpine and Scandinavian glaciers in danger, the sea level can rise up to a meter

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