Answer:
The Köppen climate type most closely associated with the desert biome is the "BWh" climate classification. This classification is commonly referred to as a hot desert climate. In the Köppen climate classification system, the "B" stands for arid climates, and the "Wh" indicates a hot desert climate with a mean temperature of the warmest month above 18°C (64.4°F).
Hot desert climates are characterized by extremely low annual precipitation levels, high temperatures, and significant temperature fluctuations between day and night. These regions typically have sparse vegetation and are known for their vast expanses of sand dunes, rocky landscapes, and minimal plant cover. Examples of areas with a BWh climate include the Sahara Desert in Africa and the Arabian Desert in the Middle East.