Elevação Nível Mar

~3,3 mm/ano.
Created by
Renato Passos, Eng. de Software
Reviewed by
Renato Passos, Eng. de Software

Last updated: Apr 18, 2026

mm/ano
3,3

About this calculator

The sea level elevation calculator estimates the increase in ocean surface elevation over time using a global average rate of 3.3 mm per year. It helps predict coastal impacts like flooding and erosion. The tool considers only the annual average rise and does not account for local geological subsidence or extreme weather events.

The calculator uses linear projection: cumulative elevation is annual rate multiplied by years. For example, over 10 years, the total rise would be 33 mm (3.3 mm/year × 10). This approximation is suitable for general scenarios but should not replace localized analyses involving geological or climatic factors.

Use this tool for coastal infrastructure planning, environmental risk assessment, or climate education. Note: the projection excludes accelerated glacial melt or ocean current variations that might affect regional rates. For localized accuracy, consult specific monitoring data for the area of interest.

The 3.3 mm/year rate is a historical global average verified by satellites and marine stations. Future projections may vary depending on greenhouse gas emissions and geological adaptations. The calculator does not include calculations for pressure relief from dikes or beach retreat strategies.

Frequently asked questions

Why use the sea level elevation calculator?

It helps estimate future coastal flooding and erosion impacts based on global average data.

How is the 3.3 mm/year rate incorporated into the calculator?

The rate is a historical global average used for linear projection calculations.

Can I use it to plan coastal infrastructure?

Yes, but combine it with local studies to adjust for geological subsidence or weather events.

Where is the 3.3 mm/year data validated?

The rate is based on satellite and marine station measurements since the 1990s.

Do I need technical knowledge to use the tool?

No: input the desired timeframe and the calculator returns accumulated elevation automatically.

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