Transcripts of GSFC_GROVER_VF_Radcliff

It's not a robot for the sake of building a robot, but it's a robot for science. The fact that we can control it from anywhere only enables more applications to be able to be loaded on this platform and be used for different scientific purposes. 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 and temperature is definitely one of the most difficult issues to deal with, because electronics and batteries and pretty much all the components of the robot behave differently at these cold temperatures and so we tested all the different systems in the cold, we let the robot outside for many days at a time, trying to see if that would affect it and from what we can tell, we have very good performance in the cold. GROVER represents the ability to collect an enormous amount of data it would really revolutionize how much information we can get about the ice sheet on Greenland. It would really open a lot of doors Snow is really important because it reflects a lot of the energy and heat form the sun. So if you lose snow in a lot of places it's going to heat up even more because of the bare ground will absorb more energy from the sun, whereas snow reflects it Places like Greenland which are covered in snow are very important. It's a large area of of the Earth's surface that's reflecting energy, so it's really important to track the changes here. So this summer we are going to test GROVER at Summit that's basically in the center of Greenland at one of the highest points in Greenland It's an area where snow accumulates. We are measuring several different things about the snow pack with the radar. The big one that we're interested in right now is the melt that happened in July of last year, in July of 2012 it was a fairly unique event there was some ice that covered most of Greenland's surface and it has snowed since so there's about 60 centimeters on top of that The radars on GROVER will not only be able to look at accumulation but will also be able to resolve how large that melt layer is and start to look at the quantity of water that melted and then percolated down and then re-froze