New Study Shows Increased Flooding, Accelerated Sea-Level Rise in Miami Over Last Decade
Researchers suggest using local sea-level rise projections to better protect community from coastal floods
April 04, 2016
MIAMI—A new University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science-led study found that Miami Beach flood events have significantly increased over the last decade due to an acceleration of sea-level rise in South Florida. The researchers suggest that regional sea-level projections should be used in place of global projections to better prepare for future flood hazards in the region.
To quantify the flood hazard in Miami Beach, the UM Rosenstiel School researchers analyzed tide and rain-gauge records, media reports, insurance claims, and photos of flooding events on Miami Beach and in Miami since 2006. The insurance claims and media reports helped the researchers pinpoint the date and type of flood events.
“Our results show that the effect of sea-level rise is real and affecting the daily life of people living in low-lying coastal communities, such as Miami Beach,” said Shimon Wdowinski, UM Rosenstiel School research professor of marine geosciences, and lead author of the study.
The results showed that the flooding frequency in Miami Beach has significantly increased after 2006 mainly due to increasing number of high-tide flooding events. The increased flooding frequency coincides with acceleration in the rate of sea level rise in South Florida. The average rate of sea-level rise increased by 6 millimeters per year over the last decade - from 3 millimeters per year before 2006 to 9 millimeters per year after 2006.
The study also provides new evidence that connects the weakening of the Gulf Stream with sea-level rise along the US Atlantic coast.
Florida is one of the most vulnerable areas to sea-level rise due to its low elevation, large population concentrations, and economic importance. Accelerated rates of sea-level rise have caused a significant increase in flooding frequency in several coastal communities in Florida.
The study, titled “Increasing flooding hazard in coastal communities due to rising sea level: Case study of Miami Beach, Florida,” was published in the June 2016 issue, Vol. 126 of the journal Ocean and Coastal Management. The study’s authors include: Shimon Wdowinski, Ronald Bray and Ben P. Kirtman from the UM Rosenstiel School; and Zhaohua Wu from Florida State University. The study was supported by a grant for NASA.
# # #
About the University of Miami’s Rosenstiel School
The University of Miami is one of the largest private research institutions in the southeastern United States. The University’s mission is to provide quality education, attract and retain outstanding students, support the faculty and their research, and build an endowment for University initiatives. Founded in the 1940’s, the Rosenstiel School of Marine & Atmospheric Science has grown into one of the world’s premier marine and atmospheric research institutions. Offering dynamic interdisciplinary academics, the Rosenstiel School is dedicated to helping communities to better understand the planet, participating in the establishment of environmental policies, and aiding in the improvement of society and quality of life. For more information, visit: www.rsmas.miami.edu.
Graph: Annual flooding occurrence in Miami Beach between 1998-2013 indicating a significant increase in tide flooding events (green) since 2006.
Credit: Shimon Wdowinski, Ph.D.