NASA Satellites Show Disturbing Trends in Water Supply

The Tourist Beaches Predicted to Shrink the Most

Sandy beaches comprise more than one-third of the world’s coastline —but nearly half of this could be gone by 2100.

This graphic by HawaiianIslands.com uses European Commission data that estimates how shorelines worldwide will change over the next decades.

How this Graphic Works

The source conducted an analysis using European Commission data, estimating global shoreline changes by 2100.

Utilizing this data, they calculated the average decrease or increase (in meters) for the shorelines of the 10 most-reviewed beaches in each country on TripAdvisor.

Subsequently, they identified the top 20 tourist beaches projected to experience the most significant reduction in size. The beach boundaries were delineated using the Google Maps API.

Beaches Shrinking by 2100

According to various research, climate change is the main cause of sea levels rising across the globe. In the 20th century alone, it’s estimated that the mean global sea level rose by 11-16 cm.

Typically, beaches might naturally shift inland in response to higher water levels. However, over the last few decades, beaches, caught between rising seas and structures such as buildings and roads, have found themselves with nowhere to go.

Landmark Beach in Lagos, Nigeria, is expected to be the worst hit by 2100, losing 918.3 m of shoreline due to rising sea levels.

Lagos is already suffering the severe impact of rising seas through increased flooding, water-borne disease, and declining water quality.

Playa Akumal in Cancún, Mexico, is the North American tourist beach that is expected to shrink the most (265.9 m). Parts of the Quintana Roo coast, where Akumal is found, are already losing up to 4.9 m a year.

Meanwhile, Clearwater Beach in Longboat Key, Florida, is the American beach that is anticipated to shrink the most (193.4 m). Rising sea levels in Clearwater pose an additional concern since the local aquifers, critical for the water supply of millions, are vulnerable to saltwater intrusion.

What’s Causing Sea Levels to Rise?

Since the 1970s, the world has experienced an average temperature increase of 0.15 to 0.20°C per decade, as indicated by NASA research.

This global warming phenomenon has triggered the melting of polar ice caps, resulting in the loss of approximately 28 trillion tonnes of ice within a little over two decades.

Concurrently, global sea levels have escalated by an average of 34.6 mm during the same period.

In the face of the challenge, solutions such as creating dunes along the backshore of beaches, increasing shoreline setbacks, and planting submerged aquatic vegetation to reduce erosion have been studied to mitigate the impact of rising sea levels.