The report observes that in Mumbai and Kolkata, half of the population would be under water. In Shanghai, a city of 23 million people, it is more than three-quarters.
Carbon emissions causing 4 degrees Celsius of warming (7.2 degrees Fahrenheit) could lead to enough rise in the sea level to submerge land currently home to 470 to 760 million people globally, says a report by Climate Central.
Just for reference, the global average temperature across land and water surfaces in 2016 was 58.69°F (14.84°C), 1.69°F above the 20th century average of 57.0°F.The report published in November 2015, finds that China has the most to lose from business as usual, with 145 million citizens today on implicated land [land which is at risk from rising warming levels]. China also has the most to gain from limiting warming to 2 °C, which would cut the total to 64 million people.
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