“Climate Change Crisis: 13 Million Americans Could Become Climate Refugees by 2100”

According to new research, more than 13 million Americans could become climate refugees by 2100 if the worst sea-level rise scenario comes to pass. Rising seas caused by climate change could permanently flood hundreds of U.S. counties, with Miami-Dade, Florida being the hardest-hit county where 2 million people could be forced to relocate. Florida is home to about half of these potential climate refugees.

The study, published in the journal Nature Climate Change on March 14, highlights the potential impact of sea-level rise on coastal populations. The research was conducted by analyzing census data from counties around the continental United States to project future population levels based on historical growth rates in coastal regions. The study found that population in coastal areas could be up to three times that of current levels by 2100.

In the worst-case scenario projected by the National Oceanic and Atmospheric Administration (NOAA), the oceans could rise about 6 feet by 2100. This could lead to 13 million people being forced to move as their homes become partially submerged under water. However, with only 3 feet of sea-level rise, the number of people forced to relocate would be around 4.2 million.

The researchers emphasize that mitigation efforts can help prevent the worst effects of sea-level rise. Local governments can take steps such as building sea walls, restoring marshes, implementing zoning laws to discourage building in vulnerable areas, and actively planning for climate impacts. Climate change policy is often driven from the bottom up by county- and city-level zoning laws.

The study’s co-author, Mathew Hauer, suggests that a combination of protection, accommodation, and retreat strategies can help mitigate the effects of sea-level rise. Different areas may require different approaches based on their unique vulnerabilities. Ultimately, proactive measures at the local, state, and national levels can help prevent a forced mass-migration of climate refugees.

It is important to address climate change and its impacts to avoid the displacement of millions of people in the future. The study serves as a reminder of the urgent need for action to mitigate the effects of sea-level rise and protect vulnerable coastal populations.