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2.8% of GDP should be used to deal with emergencies caused by floods caused by the increase in global temperature.
With more than 17 centimeters of sea level rise in the world since 1900, the potential
Floods resulting from sea level rise , if the 2 ° C warming limit estimated by the United Nations is not respected, could cost According to a study of the National Oceanographic Center of the United Kingdom (NOC), 14 000 million dollars a year would be paid to the world in 2100. A little over 40 billion Colombian pesos.
According to the work, published in Environmental Research Letters the economic consequences, as usual, will punish with less harshness the countries with more possibilities of paying them: the best prepared infrastructures will protect states with higher incomes, while those with higher median incomes, such as China, will experience the largest increase in flood costs. The authors indicate that tropical areas are likely to see extreme sea levels more frequently.
The team explored the pace and consequences of global and regional sea-level rise with restricted warming of 1.5 ° C and 2 ° C, and compared them with the sea level projections in an unmitigated emissions scenario. Using the World Bank income groups (high, middle and high income countries), they assessed the impact of sea level rise in coastal areas from one point to another. global perspective and for some countries. Interactive
"We have discovered that, with a temperature rise trajectory of 1.5 ° C, for the year 2100, the average sea level will have increased by 0.52 m, but if the target of 2 ° is exceeded C, we will see an average sea level rise of 0.86 m, and in the worst case, an increase of 1.8 m ", explains the principal author of the study, Svetlana Jevrejeva, NOC
. warming is not mitigated and sea level rise projections follow, the overall annual flood costs without adaptation will increase to 14,000 million a year for an average sea level rise of 0.86 m, and up to 27,000 million by This would represent 2.8% of global GDP by 2100. "
" These extreme sea levels will have a negative effect on the economies of developing coastal countries and livability low coasts, small islands and island nations like the Maldives will be affected very easily and the pressures on their natural and environmental resources will be even greater, "concludes Jevrejeva.
The year 2017 was the hottest recorded in the world's oceans, according to an updated oceanographic analysis of the Institute of Atmospheric Physics (IAP) of the Chinese Academy of Sciences. In the most superficial 2.000 meters, the seas of the Earth were 1.51×10 22 joules (a measure of international energy) warmer than the hottest second year, 2015; and 19,19×10 22 joules above the 1981-2010 climatological reference period.
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