Lima is known as the "city without rain", but there is heavy fog in winter. What is the reason?

The reasons why Lima is called the "Rainless City": ① Tropical desert climate, most of which are on the edge of subtropical high pressure, with sinking airflow; ② Affected by the southeast trade wind (offshore wind)

, located on a leeward slope; ③The Peruvian cold current has obvious cooling and dehumidifying effects. The causes of fog: ① Being close to the ocean, water vapor is abundant; ② Affected by the Peruvian cold current, the temperature near the ground is low in winter; ③ The atmosphere is cold and hot at the top, and the atmosphere is stable, so water vapor easily condenses to form fog.

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