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Home → Other → Great Pics

Antarctica from Pole to coast, captured in stunning detail

Tibi Puiu by Tibi Puiu
August 26, 2014
in Environment, Great Pics, News

A mosaic of more than 3,150 high-resolution satellite images creates the best continent-wide view since 1997. The result is the one you see below:

antarctica1
Released in August 2014, this mosaic compiles over 3,150 satellite images of Antarctica into a single image of the entire continent. CSA/MDA/CCIN University of Waterloo

The over three thousand pictures were taken in the Southern Hemisphere’s autumn of 2008, and tiled together into a coast-to-coast view of the entire continent with its coastal waters. The result is not only lovely to look at, but it’s also very useful – enabling researchers to better study the ice changes that occurred in Antarctica, says Ellsworth LeDrew, director of the Canadian Cryospheric Information Network and a professor at University of Waterloo. This will enable a better understanding of how climate change affects Antarctic ice, and will also be useful for ships crossing the area.

The information and pictures are freely available online, via the Polar Data Catalogue.

 “It used to be that a lot of data were inaccessible” to non-specialists, says Ellsworth. Now anyone will be able to find and use the maps to better understand science, environmental issues and political policies affecting Antarctica. The data from 1997 will also be put online in the same collection, hopefully “in the next few months,” he says. Furthermore, the Polar Data Catalogue will allow users to search for the individual tile images of particular Antarctic locations, making the data easier to store and use.

The different colors you see here represent the different wavelengths – in other words, they represent the characteristics of the ice they are passing through and reflected by.

“These colors in a nutshell represent different physical characteristics of the ice, which the scientist can interpret,” LeDrew says. “It’s what is called polarimetric information. It’s like looking through a camera’s polarizing filter. Some wavelengths are up and down and some are side to side. These colors represent these wavelengths and different wave bands,” which to an informed eye will reveal much about the condition and motion of glaciers, ice shelves and sea ice. “For example where the edge of a glacier is, or sea ice shelves that have broken off,” he says, or ice thinning as landbound glaciers expand towards the sea.

antarctica2
A closeup view of Antarctica near the Ronne Ice Shelf CSA/MDA/CCIN University of Waterloo.

Furthermore, the images also highlight a bit of the ice below surface.

“Also, you will be able to access subareas – the individual images that are stitched together – at very high resolution. You don’t have to pick out the entire mosaic,” says LeDrew, to study the edge of a particular glacier or where certain sea ice shelves have broken off since the late 1990s. “This is very important for looking at changes in the environment over time.”

Images and statements via PopSci.

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  1. Pole to pole flights give grim image of greenhouse gases
  2. Stunning satellite observations show Tonga eruption effects in unprecedented detail
  3. Stunning photo of the Earth captured by new Russian satellite
  4. The ozone hole over South Pole is now greater than the size of Antarctica
  5. Britain plans to plant a coast-to-coast forest comprising 50 million trees
Tags: antarcticaclimate changeiceUniversity of Waterloo

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