The tropics are warm and wet due to differential heating of the globe. With direct sunlight, the air is extremely warm. Hot temperatures cause increased evaporation of the vast expanses of ocean at the tropics. As the water evaporates, it rises with warm air into the atmosphere. The uneven heating of the Earth's surface causes weather. When you have differences in air temperature, the hot air will rise and the cold air will sink. These movements create wind. Land breezes and sea breezes refer to winds that often occur near an ocean or lake. Since the center of the Earth gets more sunlight, it is consistently hotter than other parts of the Earth. When air is hot, it rises. It creates low-pressure areas that draw air from other areas in, creating wind. This heating and cooling of the air on Earth causes all the climate and weather patterns we know. In summer, near the equator the land warms up faster and most of the time the temperature of the land is higher than that of water in the oceans. The air over the land gets heated and rises. This causes the winds to flow from the oceans towards the land and these are monsoon winds.