Washington, Mar 4 Sea level rise this century may disproportionately affect certain Asian megacities as well as western tropical Pacific islands and the western Indian Ocean, according to a new research. The research team identified several Asian megacities that may face especially significant risks by 2100 if society continued to emit high levels of greenhouse gases: Chennai, Kolkata, Yangon, Bangkok, Ho Chi Minh City, and Manila. The study looked at the effects of natural sea level fluctuations on the projected rise due to climate change, it said.