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It's not a robot for the sake of building a robot, but it's a robot for science.

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The fact that we can control it from anywhere only enables

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more applications to be able to be loaded on this platform and be used for different scientific purposes.

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Our main concern and main motivation was to be able to come over here was to be able to test it in the extreme environment

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and temperature is definitely one of the most difficult issues

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to deal with, because electronics and batteries

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and pretty much all the components of the robot behave differently

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at these cold temperatures and so we tested all the different systems

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in the cold, we let the robot outside for

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many days at a time, trying to see if that would affect it

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and from what we can tell, we have very good

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performance in the cold.

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GROVER represents the ability to collect an enormous amount of data

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it would really revolutionize how much information we can get about the ice sheet

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on Greenland. It would really open a lot of doors

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Snow is really important because it reflects a lot of the

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energy and heat form the sun. So if you lose snow in a lot of places

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it's going to heat up even more because of the bare ground

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will absorb more energy from the sun, whereas snow reflects it

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Places like Greenland which are covered in snow

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are very important. It's a large area of of the Earth's surface

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that's reflecting energy, so it's really important to track the changes here.

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So this summer we are going to test GROVER at Summit

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that's basically in the center of Greenland at one of the highest points in Greenland

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It's an area where snow accumulates.

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We are measuring several different things

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about the snow pack with the radar. The big one that we're interested in

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right now is the melt that happened in July of last year, in July of 2012

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it was a fairly unique event

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there was some ice that covered most of Greenland's surface

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and it has snowed since so there's about 60 centimeters on top of that

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The radars on GROVER will not only be able to look at accumulation

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but will also be able to resolve how large that melt layer is

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and start to look at the quantity of water that melted

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and then percolated down and then re-froze

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