In delhi fog delays flights in winter why does it not happen summer?

Temperature:

- Winter: The temperature in Delhi during winter drops significantly, often reaching below 10 degrees Celsius. Lower temperatures cause the air to become denser, making it more conducive to fog formation.

- Summer: In contrast, summer temperatures in Delhi are much higher, typically exceeding 35 degrees Celsius. The warmer air holds less moisture, resulting in reduced fog formation.

Humidity:

- Winter: Delhi experiences higher humidity levels during winter months due to reduced evaporation and atmospheric circulation. High humidity provides more moisture for fog formation.

- Summer: Summer months in Delhi are generally drier with lower humidity levels. The drier air prevents the formation of dense fog.

Wind Speed:

- Winter: Winter in Delhi is characterized by relatively calmer wind conditions. The slower wind speed allows fog to accumulate near the ground without being dispersed.

- Summer: Summer months in Delhi experience stronger wind currents due to the higher temperatures and increased convection. These stronger winds help in dispersing and clearing any fog that may form.

Solar Radiation:

- Winter: During winter, there is reduced solar radiation due to shorter days and lower sun angles. This reduced solar radiation contributes to the accumulation and persistence of fog.

- Summer: In contrast, summer receives abundant solar radiation due to longer days and higher sun angles. The increased solar radiation helps in evaporating water droplets, reducing the likelihood of fog formation.

In summary, the combination of low temperatures, high humidity, calmer winds, and reduced solar radiation during winter creates favorable conditions for fog formation and persistence, leading to flight delays in Delhi. Whereas in summer, higher temperatures, lower humidity, stronger winds, and increased solar radiation prevent the formation of dense fog, resulting in fewer flight delays.