June 12, 2024 — Ocean-related tourism and recreation supports more than 320,000 jobs and $13.5 billion in goods and services in Florida. But a swim in the ocean became much less attractive in the summer of 2023, when the water temperatures off Miami reached as high as 101 degrees Fahrenheit (37.8 Celsius).
The future of some jobs and businesses across the ocean economy have also become less secure as the ocean warms and damage from storms, sea-level rise, and marine heat waves increases.
Ocean temperatures have been heating up over the past century, and hitting record highs for much of the past year, driven primarily by the rise in greenhouse gas emissions from burning fossil fuels. Scientists estimate that more than 90 percent of the excess heat produced by human activities has been taken up by the ocean.
That warming, hidden for years in data of interest only to oceanographers, is now having profound consequences for coastal economies around the world.
Understanding the role of the ocean in the economy is something I have been working on for more than 40 years, currently at the Center for the Blue Economy of the Middlebury Institute of International Studies. Mostly, I study the positive contributions of the ocean, but this has begun to change, sometimes dramatically. Climate change has made the ocean a threat to the economy in multiple ways.