1. frigid zone
Wikipedia definition
2. Polar climateRegions with a polar climate are characterized by a lack of warm summers (specifically, no month having an average temperature of 10 °C or higher). Regions with polar climate cover over 20% of the Earth. The sun shines 24 hours in the summer, and barely ever shines at all in the winter. Polar climate results in treeless tundra, glaciers, or a permanent or semi-permanent layer of ice.
Read “Polar climate” on English Wikipedia
Read “寒帯” on Japanese Wikipedia
Read “Polar climate” on DBpedia


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