http://www.newsweek.com/rising-seas-could-cost-world-14-trillion-year-2100-1006823

Rising sea levels could cost the global economy around $14 trillion annually by 2100 if the 2°C warming limit agreed at the Paris climate talks is breached, according to a study published in the journal Environmental Research Letters.

The Paris Agreement proposed to keep the increase in global average temperature to well below 2°C higher than pre-industrial levels in order to mitigate the worst effects of climate change. It also required nations to pursue efforts to limit the increase to 1.5°C, if possible.