Sea Level Rise Map


Projected sea level rise (~0.35 m) during the twenty-first century, as a result of global warming.

Projected sea level rise (~0.35 m) during the twenty-first century, as a result of global warming.

This is a topographic map designed to emphasize regions near sea level that could potentially be vulnerable to sea level rise.

Though the polar ice caps store sufficient water to raise sea level by ~65 m (IPCC 2007), the expected sea level rise due to global warming is much less and is expected to develop over millenia rather than centuries. Up to the year 2100, the IPCC suggests that sea level rise will be only 18-76 cm depending on models and emission scenarios (IPCC 2007), which is similar to the ~20 cm of sea level rise observed during the twentieth century. As a result, sea level rise during the twenty-first century is likely to be a significant problem only for a limited number of highly vulnerable localities.

Over the long term, sustained high temperatures may lead to irreversible declines in the Greenland and/or Antarctic ice sheet. During the previous interglacial period, 120 kyr ago, sea level is estimated to have been 4-6 m higher due to orbital variations that caused greater solar heating at the poles than today (Overpeck et al. 2006). A total ablation of the Greenland ice sheet would correspond to a 7 m sea level rise (IPCC 2007). Though this process may proceed at only ~30 cm/century, the temperatures required to begin the decline may be only 1.9 to 4.5 °C, similar to the 1.1 to 6.4 °C of warming expected to occur by 2100 (IPCC 2007).

Data Quality

This map is based on the SRTM30 PLUS digital elevation model. Like all space based elevation models, SRTM30 contains errors of several meters, especially in areas of complex terrain (Rodriguez et al. 2006). Hence, while broad qualitative features should be relatively reliable, one should not rely upon data such as these for small scale or precise details unless they have been confirmed by ground based observations.

Highlighted Regions


About Rashid Faridi

I am Rashid Aziz Faridi ,Writer, Teacher and a Voracious Reader.
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7 Responses to Sea Level Rise Map

  1. David Carey says:

    Dude, if Greenland goes down, which it probobly could if the global average temperature increased by 2 degrees celcius, it would raise sea level by up to 20 feet. If it increased by 4 say bye to the west Antarctic ice sheet, that’s another 20. A complete Antarctic meltdown would increase sea level by 150-200 feet but that’s never going to happen.


  2. bowties says:

    A pleasure to come to your site. Thnks very much!


  3. bow tie says:

    Some good information in your post. Thanks for the pleasant read!


  4. Jimbo says:

    Holland – The new atlantis!


  5. Date 12/26/09

    Combating Global Sea Rise

    Not sure if anyone has considered this before, but there are a number of areas below sea level that isn’t too far from the ocean where a simple canal could be established to allow water to flow from the ocean to fill some deep areas on dry land and help offset global sea rise. Areas such as the Qattara Depression could be filled by ocean water. A simple cannel that would hardly support a boat could enlarge itself through erosion to allow for a larger flow of water to fill this natural depression.

    Africa is in the process of breaking apart with low-lying areas that will be filled by the sea at some point in the future, and those who depend on water today are struggling because of these geographical changes and the lack of water. By establishing a canal to fill these low-lying areas with sea water, this will result in more rainfall in the region and help to establish better farmland.

    Another example of a low-lying area is Israel, where the Dead Sea is shrinking. A canal from the sea with a dam could regulate the height of the Dead Sea to a desirable level.

    Also, water from Lake Erie could be redirected to the southwest to refill aquifers.

    Mathew Sullivan
    Boynton Beach, Florida


  6. Pingback: Fossil Fuels:Overview and Impact | Rashid's Blog

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