Collecting snow layer samples is another job that we do each day. It is a pretty simple process to collect it, but how will we get it home without it melting?

    The first step is to dig a hole in the shape of a rectangle that is about 2 feet deep. We then place a small plastic container in one side of the hole.

    Getting a Snow Layer Sample in Greenland
    Kevin McMahon is collecting a snow layer sample from the Greenland Ice Sheet. Photo by Hannah James.

    Now that our sample is trapped in the plastic container, we cut it out with a saw.

    Getting a Snow Layer Sample in Greenland
    Kevin McMahon is using a saw to remove a snow layer sample from the Greenland Ice Sheet. Photo by Hannah James.

    We now have a snow layer sample to take home. But how do we stop it from melting?

    Snow Layer Sample
    Kevin McMahon with a snow layer sample. Photo by Hannah James.

    The final step is to pour a liquid chemical into our plastic container. This chemical has a freezing point that is lower than the freezing point of water so it doesn’t melt the snow.

    After we pour the chemical into the sample, we have a preserved sample of the snow layers.

    Snow Layer Sample
    Snow Layer Sample Treated with a Chemical To Preserve It

    Scientists will cut this sample into small slivers to see the layers. They can then compare what these layers with the other data that we have collected.

    Snow Layer Sample
    Kevin McMahon with a snow layer sample. Photo by Hannah James.

    Author
    Date
    Weather Summary
    Overcast in the morning, sunny in the afternoon, and then overcast and windy at night
    Temperature
    14
    Wind Speed
    16
    Wind Chill
    -10

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