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How do oceans transfer heat and moisture to the atmosphere?

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Map graphic showing the boundaries of the five oceans-Pacific, Atlantic, Indian, Arctic, and Southern-using color-coded regions. Four different map projections are included: North Pole view, South Pole view, International Date Line view, and Greenwich Meridian view, each displaying the oceans' extents around the continents. — ocean Earth's oceans and their marginal seas cover nearly 71 percent of the planet's surface.

The oceans and the atmosphere are intimately linked, constantly exchanging heat and moisture to regulate Earth's climate and weather patterns. This transfer occurs primarily through two mechanisms:1

Direct Heat Transfer: The ocean surface acts as a massive heat reservoir compared to the atmosphere. Heat energy is transferred directly from the warmer ocean surface to the overlying air. This process is particularly significant in midlatitudes during autumn and early winter, when the ocean releases heat stored during the summer.12
Evaporation: This is the process by which liquid water transitions into water vapour and enters the atmosphere. When molecules at the ocean surface gain sufficient kinetic energy, they escape into the air. This process is highly sensitive to temperature; even small increases in sea surface temperature can lead to significant increases in evaporation.32

When this water vapour later condenses in the atmosphere, it releases latent heat, which provides a major source of energy for driving atmospheric circulation, including the development of tropical cyclones and other large-scale weather systems.12