Which climatic classification category, according to the Köppen system, best describes the high-altitude cold desert conditions found in the Spiti Valley of Himachal Pradesh?

💡 Solution & Explanation

The ET classification in the Köppen system denotes a tundra or polar climate where mean monthly temperatures remain below freezing for most of the year, perfectly characterizing the cold, arid high-altitude desert of Spiti Valley. Af represents tropical rainforests found near the equator. Köppen climate types applied to mountain regions help categorize regional vegetation zones.