Is it true that the coastal areas of islands will flood and disappear if climate change is not reversed?
Yes, it is true. Climate change poses a significant threat to coastal areas, particularly those of small islands1. Here are some key points:
- Sea-level rise: This is one of the most immediate challenges for small island states2. Thermal expansion of oceans and polar ice melting are the main causes for sea-level change2. Globally, sea-level rise will threaten 95% of coastal regions during the 21st century2.
- Increased flooding: Sea-level rises lead to increased flooding in coastal regions2. Approximately 25 million people live in an area vulnerable to coastal flooding3.
- Inundation of land: As sea levels rise, more land is covered by water, leading to the loss of habitats and changes in shorelines2.
- Erosion: Coastal erosion is another significant impact of climate change. Hurricanes can wash away sandy barrier islands, leaving coastlines and islands unprotected from storm surge4. Waves and winds can carry away beach sand little by little, shrinking scenic beaches4.
These impacts will lead to the degradation of coastal ecosystems, loss of livelihoods, and essential community services2. If climate change continues at its current pace, low-lying coastal areas and islands could indeed flood and disappear. It’s a stark reminder of the urgent need for climate action. However, it’s important to note that the exact timeline and extent of these changes are still subjects of ongoing scientific research.
