Romm, a senior fellow at the Center for American Progress, a Washington think-tank, said a standout concern for the USA is the finding that climate change is likely to raise the intensity and rainfall from hurricanes and other tropical cyclones, a point of great debate since Hurricanes Katrina and Rita in 2005 and the onslaught of storms in Florida in 2004.
That makes the report’s discussion of sea-level rise “disappointing,” Romm said, because it narrows and lowers the expected range of the oceans’ rise even as recent research shows Greenland and Antarctica losing masses of ice that could raise the world’s waters.
Romm said recent sea-level science not included in the report because it came out after the deadline of more than a year ago suggests a 5-inches-a-year rise after the year 2100, “which is devastating. How do you adapt to that? We’re going to have to triage a lot of major cities here, particularly when you throw in the increased intensity and increasing rain events” of hurricanes.