Sea level rise may impact five times more Indians by 2100: Study

India and or Asian countries, including Bangladesh and Indonesia, may see a five to tenfold increase in population living below projected high tide line -- mark on coastal lands up to which highest high tide reaches in a year -- by end of century, according to a study. 

research was published by Scott A Kulp and Benjamin H. Strauss of Climate Central in US, a n-profit news organization comprising of scientists and journalists that analyses and reports on climate science, and contains new estimates on impact of rising sea levels.

study, published in journal Nature Communications, combined future water level rise with current projections of population density increase in major parts of world, and ted that three times as many people may be affected as earlier projections estimated.

scientists used an improved model of coastal elevations across several regions of world to provide new estimates of vulnerability of densely populated low-lying areas to rising oceans at global and national scales.

According to researchers, nearly 250 million people around world currently live on land that may go below water levels during annual floods.

By new estimate, researchers wrote in study, one billion people w occupy land that is less than 10 metres above current high tide lines, including 250 million below one metre.

researchers said eight Asian countries -- China, Bangladesh, India, Vietnam, Indonesia, Thailand, Philippines, and Japan -- housed more than 70 per cent of total number of people currently living on affected lands worldwide.

Based on revised estimates y said India, Bangladesh, Indonesia, and Philippines may see a five to tenfold change in estimated current populations below projected high tide line.

By 2050, about 340 million people would settle in places that may be submerged during yearly floods, and up to 630 million by end of this century, study ted.

"Even with low carbon emissions and stable Antarctic ice sheets, leading to optimistically low future sea levels, we find that global impacts of sea-level rise and coastal flooding this century will likely be far greater than indicated by most pessimistic past analyses," researchers said.

y cautioned that coastal communities worldwide must prepare mselves for much more difficult times in future than what is anticipated if current trends of greenhouse gas emissions continue.

"It is difficult to extrapolate such projections and ir impacts to more resource-constrained developing nations, though historically, large-scale migration events have posed serious challenges to political stability, driving conflict," researchers wrote in study.

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