The 125 million people of the Caribbean/Gulf of Mexico region are highly exposed to hurricanes, floods and landslides–and it is not only because of bad weather. Increasing numbers of the poor are crowding into confined areas that are most prone to destruction–low-lying flood plains, too-steep hillsides, and the like. Robert Chen, director of the Center for International Earth Science Information Network (CIESIN), will describe this alarming trend in an AGU talk on Friday, the last day of the meeting.
CIESIN specializes in creating maps that show humans’ interaction with the natural environment. Ones for this region show deadly combinations of poverty and physical vulnerability to weather. (Blues signal low numbers; greens moderate; yellow to red, progressively more.) Hotspots are clustered across Cuba, Haiti, the Dominican Republic and Jamaica. Along the coast of Latin America are wide swaths of danger spanning Colombia, Costa Rica, Nicaragua, Honduras, Guatemala and Mexico. Not surprisingly, low-lying parts of Texas, Louisiana and southern Florida also stand out.
Many scientists believe climate change will worsen extremes of weather. The CIESIN research suggest that even if this never happens, as the population of dangerous areas grows, these hotspots will continue to get more dangerous.