To understand the climate, look at the scale: The world's oceans cover 71% of the global surface area to an average depth of 2.3 miles.
Water is 1,000 times denser than air, granting the oceans a heat retention capacity that the atmosphere simply cannot match. Water vapour tmosphere, reaching up to 4% of atmospheric volume over temperate and tropical regions.
It's responsible for up to 75 percent of all atmospheric warming, making carbon dioxide a distant second.
Water vapour, winds, ocean currents and clouds are overwhelmingly responsible for earth's regional weather patterns. These are the true global drivers of all weather, all the cloud cover, storms, rain, humidity and snowfall.