Why will sea level rise not be the same everywhere?

Sea-level is rising because of global warming, but this rise is not the same everywhere on Earth. Three factors influence the sea level changes locally:

  • Temperatures – Hot water is more voluminous than cold water, hence sea level may rise more in the Tropics.
  • Winds – The dominant winds in a region affect the shape of the seas.
  • Oceanic currents – Global warming can cause changes in oceanic currents, which would have a direct impact on local sea-level rise.

The coastlines’ shape and the tectonic settings can also affect the response of a given location to sea-level change.

Sea Level Rise

There are differences between global sea level and local sea level. Let's take a brief look at them:

(Source: Rachel Siao/ Earth Observatory of Singapore)