Nature and Biodiversity

This chart shows more than 30 years of Arctic sea ice cover 

A glacier in Iceland.

March is the month where arctic sea is typically reaches its maximum extent. Image: Unsplash/ Lorenzo Castagnone

Katharina Buchholz
Data Journalist, Statista
  • Data from the National Oceanic and Atmospheric Administration shows how Arctic sea ice cover has changed from 1979-2001.
  • It shows an overall downward trajectory over that period.

While the extent of sea ice covering the arctic varies every year depending on the weather, a general downward trend becomes visible when examining data on the extent of arctic sea ice in March since 1979. This is an effect of global climate change, which sees average and mean temperatures rise across the Earth, leading to decreasing extents and thickness of the ice covers around the poles.

March is the month where arctic sea is typically reaches its maximum extent, which is why it is referenced frequently in scientific studies and record-keeping, like the data from the National Oceanic and Atmospheric Administration used in the graphic.

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Just like the arctic sea is, ice cover in the Antarctic is also decreasing on average. The same is true for snow cover on the poles, which has been decreasing on average since 1967, a trend that has been speeding up recently.

The Artic Ice Cover is Receeding
Artic ice cover has been on a downward trajectory since 1979. Image: Statista
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