How is the sun not responsible for warming the ocean?

The ocean has been steadily warming. What's responsible for this warming?

  • Sun

    Votes: 3 60.0%
  • Atmosphere

    Votes: 1 20.0%
  • Overwhelmingly the sun with a minor contribution by the atmosphere

    Votes: 1 20.0%
  • Overwhelmingly the atmosphere with a minor contribution by the atmosphere

    Votes: 0 0.0%

  • Total voters
    5
the ocean absorbs a large amount of heat from the sun, making it the largest solar energy collector on Earth. The ocean's ability to store and release heat over long periods of time plays a central role in stabilizing the Earth's climate system.

How heat moves​

The ocean is the largest solar energy collector on Earth. Not only does water cover more than 70 percent of our planet’s surface, it can also absorb large amounts of heat without a large increase in temperature. This tremendous ability to store and release heat over long periods of time gives the ocean a central role in stabilizing Earth’s climate system. The main source of ocean heat is sunlight. Additionally, clouds, water vapor, and greenhouse gases emit heat that they have absorbed, and some of that heat energy enters the ocean. Waves, tides, and currents constantly mix the ocean, moving heat from warmer to cooler latitudes and to deeper levels.

Heat absorbed by the ocean is moved from one place to another, but it doesn’t disappear. The heat energy eventually re-enters the rest of the Earth system by melting ice shelves, evaporating water, or directly reheating the atmosphere. Thus, heat energy in the ocean can warm the planet for decades after it was absorbed. If the ocean absorbs more heat than it releases over a given time span, its heat content increases. Knowing how much heat energy the ocean absorbs and releases is essential for understanding and modeling global climate.

 

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