Note that these are surface temperatures, while weather is usually reported as air temperatures. The air temperatures were around 30C, per the article.

Surface temperatures vary a great deal, asphalt in the sun for instance can be 30C+ hotter than the surrounding air.

Climate change is real, and human-caused. The Arctic is in crisis, and land temperatures matter. But it is not 48C up there in the same sense that it was 46C/115F in the Pacific Northwest this week.