Well, I don't believe anyone who isn't involved in the science in a serious way can make assessments like that. There are many reasons why heat is distributed the way it is. Your graphic shows a few of them. Note that it is specific to a month range. Also, note that the Atlantic near where you live includes a hot spot out in the ocean. That came from something other than a local event in the ocean. Also, note that the Antarctic shows heating, and there is no tundra there. Also, warming from before any significant tundra melting doesn't show a pattern that is decidedly different. I think what we need to learn is that it's important to look at a variety of sources of science that depend on the accuracy of their science - in the US, that includes NOAA, NASA, various universities, etc. It also includes similar international organizations. We're told the melting of the tundra is certainly a well known and studied disaster in the making, but I think we have to be careful about it when we start looking at charts like this and begin drawing our own conclusions.