6 mins read
High Arctic vs Low Arctic: What's the Difference?
Ask where the Arctic “really” begins, and most people point to a line on a map: the Arctic Circle, 66°33′ north, the number stamped on every polar brochure. Scientists who study the region use a different, more useful set of boundaries, drawn not by latitude but by what can actually survive on the ground. Understanding those boundaries matters for anyone comparing arctic cruise regions before booking a Quark Expeditions High Arctic voyage, since itineraries in the Canadian Arctic, Svalbard, or Greenland can sit in genuinely different ecological zones even when they share a name on a map. The Arctic is generally divided into three bands: the Subarctic, the Low Arctic, and the High Arctic. Each has its own climate, vegetation, and wildlife, and the differences are not subtle once you know what to look for. Where the Subarctic Ends and the Arctic Begins The first boundary sets the stage for the High Arctic vs Low Arctic question. The line between the Subarctic and the true Arctic is drawn at the tree line, the point past which trees at least two to three meters tall can no longer grow. That boundary roughly tracks the 10°C isotherm for average July temperatures: where the warmest month averages below that mark, trees struggle to seed and grow. South of the tree line lies boreal forest, or taiga. North of it, the true Arctic begins, so any honest comparison of Arctic vs Subarctic starts here, at the trees, not the thermometer alone. What Actually Separates the Low Arctic from the High Arctic […]