The study found that many low-lying regions along the coasts of Latin America and the Caribbean, Africa, and Southeast Asia may face a severe threat of permanent inundation, part of an alarming trend with the potential to trigger a reversal in human development in coastal communities worldwide. This includes land home to roughly five per cent of the population of coastal cities such as Kingston, Jamaica.įlood risk exposure is anticipated to double to 10 per cent of the population by the end of the century. They said hundreds of highly populated cities will face increased flood risk by mid-century, relative to a future without climate change. The new hyperlocal data maps in detail the fivefold increase in susceptibility to flood damage along the world’s densely populated coastlines with the authors saying the data platform makes it possible to see where sea-level rise impacts may most threaten homes and infrastructure. It said as a result, 14 million more people worldwide now live in coastal communities with a one-in- 20 annual chance of flooding with global greenhouse gas emissions (SSP2-4.5 projected by the end of the century to expand this one-in-20 floodplain to areas currently populated by nearly 73 million people. New hyperlocal data released Tuesday by Human Climate Horizons, a collaboration between the United Nations Development Programme (UNDP) and the Climate Impact Lab (CIL), notes that the extent of coastal flooding has increased over the past 20 years as a result of sea level rise. “Without shoreline defenses, under a worst-case warming scenario by the end of the century, five per cent or more of the following cities are projected to fall permanently below sea level, namely, Guayaquil, Ecuador, Barranquilla, Colombia, Santos, Brazil, Rio de Janeiro, Brazil, Kingston, Jamaica, Cotonou, Benin, Kolkata, India, Perth, Australia, Newcastle, Australia and Sydney, Australia,” said the report. A new report is warning that several Caribbean countries including Jamaica without shoreline defences could permanently lose five per cent or more of their cities to sea level rises by the end of the century.
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