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The diurnal temperature range refers to the difference between the highest and lowest temperatures in a 24-hour period. This daily fluctuation is influenced by solar radiation and is generally more pronounced in dry climates and at higher altitudes, away from the moderating effect of the sea. Land surfaces warm and cool more rapidly than water, leading to significant temperature variations throughout the day.12

In regions affected by monsoons, landmasses can heat up considerably in the afternoon, especially on clear days. This daily cycle of heating and cooling transfers energy to atmospheric systems, influencing cloud formation and rainfall. A large diurnal temperature range, with high daytime and low nighttime temperatures, is also beneficial for plant photosynthesis.23

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