No, I don't believe so. First, there's quite a disparity in location. Cambridge Bay is at approximately 69° north; Pearl is at 80° north. That separation is equivalent to the distance from Toronto to Memphis. You wouldn't tell me that the atmosphere is the same over the two of those.
Furthermore, at this point CHARS is not doing any atmospheric work. They have, as far as I know, none in their list of science that they will be doing. There's no overlap between the two on the science front.
In the Canadian Network of Northern Research Operators, here are something like 77 different research locations across the Arctic. The Canadian Arctic is a very large place, and no one station is going to take up the work of all the others.
No, I don't believe so, at all.