Why does the Arabian Desert have extremely hot summers?

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The Arabian Desert experiences extremely hot summers primarily due to its location within a tropical and subtropical desert climate zone, which is dominated by stable subtropical anticyclones.12

These high-pressure systems cause air to descend, leading to clear, cloudless skies that allow the sun to blaze fiercely throughout the summer months. Because the air is dry and lacks significant cloud cover, it has a limited capacity to trap heat or reflect solar radiation, resulting in intense daytime temperatures that can reach as high as 130 °F (55 °C). Furthermore, the region's interior is far removed from moisture-bearing winds, which prevents the cooling effects of maritime air and maintains the extreme heat characteristic of the Arabian Peninsula.312